Developer Tools

Website source code viewer

View any website's HTML source code instantly in your browser. Paste a URL to inspect all markup, scripts, and styles. Free, private, no signup needed.

Github repository size checker

Check the total size of any GitHub repository without cloning it. This free browser tool shows the repo size instantly, with no signup and no downloads.

Tailwind CSS Gradient Generator

Generate and preview beautiful tailwind CSS gradient classes

Javascript Obfuscator

Obfuscates your source code, preventing it from being stolen and used without permission.

TTF Metadata Extractor

TTF Metadata Extractor online

Strong Password Generator

create complex, secure passwords that are difficult for hackers to guess

Diff Viewer

Diff text or compare files online

HTML beautifier

HTML beautifier online

Cron Expression Explainer

Decode any cron schedule into plain English, see the next run times, and catch mistakes before they break your jobs. Free, browser-based, and no signup.

SQL Formatter

SQL Formatter and Beautifier

CSS Beautifier

CSS Formatter / Beautifier

Javascript Beautifier

Javascript Formatter / Beautifier

CSS Minifier

CSS Minifier

Markdown to HTML

Markdown to HTML

HTML to Markdown

HTML to Markdown

Remove Comments

Efficiently remove comments from code written in C, C++, C#, CSS, HTML, Java, JavaScript, MATLAB, PHP, Python, Ruby, SQL, Swift,Kotlin,TypeScript,R,Go and more.

HTML Minifier

HTML Minifier

SVG Viewer

Render SVG with the text

HTML Viewer

Paste or upload HTML code and instantly preview the rendered page in your browser. This free HTML viewer helps developers and designers spot errors fast.

XML Formatter

Format, beautify, and validate XML documents online with our free XML formatter tool

SVG Blob Generator

Generate beautiful SVG blob shapes with customizable colors, sizes, and complexity. Perfect for modern web design and UI elements.

JSON Screenshot Capture

Capture JSON data as a screenshot image with syntax highlighting and customizable styling. Use this free browser tool to share code visually, no signup.

JSON Formatter

Format and beautify JSON data online. Pretty print, minify, validate, and fix JSON formatting with our free online tool.

JSON Diff

Compare two JSON documents and find semantic differences with visual highlighting

Markdown Table Generator

Generate markdown tables with our free online table generator. Create properly formatted markdown tables with headers, alignment, and custom styling.

Java Viewer

View and format Java code with our free online Java viewer. Syntax highlighting, code formatting, and easy-to-read display for Java files.

POJO Tools

Generate Plain Old Java Objects (POJOs) from JSON, XML, and YAML data with our comprehensive POJO tools generator

JSON Generator

Generate structured JSON data with our comprehensive JSON generator tool. Create JSON from templates, schemas, and custom structures.

CSS Selector Cheat Sheet

Comprehensive CSS selector reference guide with examples and interactive demonstrations

Yaml Viewer

View, format, and validate YAML files online with syntax highlighting

Less To Stylus Converter

Convert LESS CSS code to Stylus syntax online

LaTeX Table Generator

Generate LaTeX table code from your data. Create professional tables for academic papers, documents, and research.

LESS Compiler

Compile LESS (Leaner Style Sheets) code to CSS instantly. Free online LESS compiler with syntax highlighting and error detection.

SCSS Compiler

Compile SCSS and Sass code to clean CSS instantly in your browser. This free SCSS compiler highlights syntax, catches errors fast, and needs no signup.

JSONPath Tester

Test and evaluate JSONPath expressions against JSON data. Free online JSONPath tester with syntax highlighting and real-time results.

LESS to SCSS Converter

Convert LESS CSS code to SCSS syntax instantly. Free online LESS to SCSS converter that transforms LESS variables, mixins, and functions to SCSS format.

SASS to Stylus Converter

Convert SASS/SCSS code to Stylus syntax instantly. Free online SASS to Stylus converter that transforms SASS variables, mixins, and functions to Stylus format.

HTML Link Generator

Generate HTML anchor link tags instantly. Free online HTML link generator that creates properly formatted <a> tags with href, target, rel, and other attributes for web development.

Curl to PHP Converter

Convert cURL commands to PHP code instantly. Free online cURL to PHP converter that generates PHP cURL code from command-line cURL requests for easy integration into PHP applications.

GraphQL Beautifier

Format and beautify GraphQL queries, mutations, and schemas. Free online GraphQL beautifier with syntax highlighting and proper indentation.

JSON Encode Online

Encode JavaScript objects, arrays, and values to JSON strings instantly. Free online JSON encoder with syntax validation, pretty printing, and real-time conversion.

TypeScript Formatter

Format and beautify TypeScript code instantly. Free online TypeScript formatter with customizable formatting options.

Code Highlighter

Highlight code syntax for multiple programming languages instantly. Free online code highlighter with support for 100+ languages and customizable themes.

JavaScript Tester

Test and run JavaScript code online with a live console. Execute JavaScript code instantly, see console output, debug errors, and test your code snippets in a safe sandboxed environment.

YAML Beautifier

Beautify and format YAML code online. Format YAML files with proper indentation, validate YAML syntax, and make your YAML code more readable. Free YAML beautifier tool.

Sort XML Online

Sort XML elements and attributes online. Organize XML data by element name, attribute value, or custom criteria. Free XML sorting tool with multiple sorting options.

JSON to One Line

Convert formatted JSON to a single line. Minify and compress JSON by removing whitespace, newlines, and indentation. Free JSON minifier tool.

JSON Stringify Online

Convert JavaScript objects to JSON strings online. Free JSON.stringify tool with formatting options, replacer functions, and space parameters. Perfect for developers and API testing.

HTML Pretty Print

Pretty print and format HTML code online. Free HTML formatter with customizable indentation, line wrapping, and formatting options. Perfect for developers and web designers.

File Diff

Compare files and text online. Free file diff tool to find differences between two files or text documents. Perfect for code review, document comparison, and version control.

Crontab Generator

Generate cron expressions easily with our online crontab generator. Create custom cron schedules with visual selectors for minutes, hours, days, months, and weekdays.

XAML Beautifier

Beautify messy XAML markup for free in your browser: fix indentation, spacing, and line breaks, spot syntax errors, and copy clean, readable code in seconds.

YAML Validator

Validate YAML syntax and check for errors instantly. Free online YAML validator with detailed error reporting.

HTML to Markdown Converter

Convert HTML code to Markdown format instantly. Free online HTML to Markdown converter for documentation and content creation.

Python Formatter

Format and beautify Python code instantly. Free online Python formatter with PEP 8 compliance and syntax highlighting.

Perl Formatter

Format messy Perl code in your browser with consistent indentation and clean syntax highlighting. This free Perl formatter needs no signup and works instantly.

SCSS to LESS Converter

Convert SCSS (Sass) code to LESS format instantly. Free online SCSS to LESS converter for CSS preprocessor migration.

C Formatter and Beautifier

Format and beautify C source code with consistent indentation and style.

C# Escape Unescape

Escape and unescape C# strings with support for all C# escape sequences including quotes, newlines, tabs, and Unicode characters.

JSON Sorter

Sort JSON objects by keys and arrays by values with customizable options

JavaScript Validator

Validate JavaScript code syntax and detect errors. Free online JavaScript validator with real-time validation and detailed error reporting.

PHP Beautifier

Beautify and format PHP code instantly. Free online PHP beautifier tool with customizable indentation, brace styles, and real-time formatting.

XML Validator

Validate XML syntax and check for errors. Free online XML validator with detailed error reporting, line numbers, and real-time validation.

XML Highlighter

Highlight XML syntax with color coding. Free online XML highlighter tool with real-time highlighting, XML-specific syntax colors, and easy copy/download.

JSON Cleaner

Clean and format JSON code instantly. Free online JSON cleaner with validation, minification, formatting, and removal of unnecessary whitespace.

JSON Decode Online

Decode JSON strings instantly. Free online JSON decoder with validation, pretty printing, and detailed error reporting.

CSS to SASS Converter

Convert CSS code to SASS/SCSS syntax instantly. Free online CSS to SASS converter that transforms regular CSS into SASS format with nesting, variables, and modern preprocessor features.

SQL Escape Unescape

Escape and unescape SQL strings instantly. Free online SQL escape/unescape tool that handles quotes, special characters, and prevents SQL injection by properly escaping SQL strings.

JSON Escape Unescape

Escape and unescape JSON strings instantly. Free online JSON escape/unescape tool that handles quotes, special characters, and properly escapes JSON strings for use in code, APIs, and data transmission.

OPML Viewer

View and visualize OPML (Outline Processor Markup Language) files in a hierarchical, readable format. Free online OPML viewer that displays feed subscriptions and outlines.

Source Code Viewer

View and format source code with syntax highlighting. Free online source code viewer that displays code in a readable format with support for multiple programming languages and file uploads.

Stylus Compiler

Compile Stylus code to CSS instantly. Free online Stylus compiler that converts Stylus preprocessor syntax to standard CSS with support for variables, mixins, nesting, and all Stylus features.

ActionScript Beautifier

Beautify and format ActionScript code instantly. Free online ActionScript beautifier tool with customizable indentation, brace styles, and real-time formatting.

JSON Validator

Validate JSON syntax instantly. Free online JSON validator that checks JSON format, detects errors, and provides detailed error messages with line numbers.

Lua Minifier

Minify Lua code instantly. Free online Lua minifier that removes whitespace, comments, and unnecessary characters to reduce file size while maintaining functionality.

XML Stringify

Convert XML to string format instantly. Free online XML stringify tool that escapes XML for use in code, JavaScript, JSON, or other string contexts with proper escaping.

CSS to LESS Converter

Convert CSS to LESS format instantly. Free online CSS to LESS converter that transforms CSS code to LESS syntax with support for variables, mixins, and nested rules.

HTML Table Generator

Generate HTML table code from CSV, JSON, or manual input. Free online HTML table generator with customizable styling options.

YAML Editor

Edit YAML files online with syntax highlighting, tree view, validation, and real-time preview. Upload files or load from URL.

MDX Formatter

Format and beautify MDX files online. Free MDX formatter with syntax highlighting, file upload, and URL loading support.

XML Pretty Print

Pretty print XML online. Free XML formatter that formats and beautifies XML with indentation, validation, file upload, and URL loading.

JSON to String Converter

Convert JSON data to JSON string format with escape characters. Free online tool for converting JSON objects to string format.

XML To Java Converter

Convert XML data into Java class models with nested fields and inferred data types.

JavaScript Escape Unescape

Escape and unescape JavaScript strings instantly

CSS to Stylus Converter

Convert CSS stylesheets to clean Stylus syntax with optional selector nesting and instant browser-based output.

HTML to PUG Converter

Convert HTML markup into clean PUG syntax instantly.

Markdown Formatter

Format and beautify messy Markdown instantly in your browser.

Sass To Scss Converter

Convert indented SASS syntax to SCSS format instantly

XML XSL Transformation

Apply XSL stylesheets to XML documents instantly in your browser.

C++ Formatter

Beautify unformatted C++ code with configurable indentation instantly.

JSON to TypeScript POJO Generator

Convert JSON objects into TypeScript interfaces and type definitions instantly in browser.

XML Minifier

Minify XML by removing formatting and optional comments.

JSON to PHP Array Converter

Turn JSON into PHP short array syntax with proper escaping, client-side.

Scss Beautifier

Format and beautify SCSS code with proper indentation and clean structure.

XPath Tester

Test XPath expressions against XML and view matching nodes instantly.

Json Fixer

Repair malformed JSON by fixing common syntax issues and output valid formatted JSON.

Stylus To Sass Converter

Convert Stylus syntax to Sass syntax instantly.

SOAP Formatter

Format and beautify SOAP XML envelopes instantly

Babel Formatter

Format modern JavaScript/Babel code with clean readable output.

YAML Parser

Parse YAML input and inspect structured output in tree and JSON views.

SVG Formatter and Beautifier

Beautify and minify SVG markup with live preview and downloadable output.

Stylus to CSS Converter

Convert Stylus syntax to CSS instantly in the browser.

Marquee Generator

Create customizable scrolling marquee text and generate ready-to-use HTML markup.

JSON Serialize Online

Serialize JSON data into compact JSON string format with instant validation.

C Sharp Viewer

Format, beautify, and minify C# code instantly in your browser.

Java Escape Unescape

Escape and unescape Java strings in real time.

SASS Compiler

Compile indented SASS syntax into CSS instantly

XML Diff

Compare two XML documents and inspect their line-by-line differences instantly.

Angular Formatter

Beautify Angular component templates with Prettier, configurable indentation, and instant preview.

JSON to Java Converter

Convert JSON data to Java POJO classes instantly with type inference and nested class support.

Jade to HTML Converter

Convert JADE (legacy Pug) templates into clean HTML markup directly in the browser with instant preview.

JSON Navigator

Browse and navigate JSON data interactively as a hierarchical tree with breadcrumb paths and key-value details.

XML Escape Unescape

Escape plain XML entities and unescape escaped XML instantly in browser.

HTML File Input Generator

Generate HTML file input markup with common attributes instantly.

EM to Percent Converter

Convert em units to percent, px, rem, and pt values.

CSS Background Image Generator

Generate CSS background-image rules with gradient and image options.

Point to REM Converter

Convert point values to rem and related CSS units quickly.

JSON to Python POJO Generator

Convert JSON data into Python class models with nested structure support.

EM to Point Converter

Convert em units to points, pixels, rem, and percent values instantly.

PX to Percent Converter

Convert pixel values to percent, em, rem, and point units.

YAML to C Sharp POJO Generator

Parse YAML and generate C# property classes with Newtonsoft.Json attributes in your browser.

HTML Strikethrough Generator

Wrap text in HTML s or del tags with escaped output and live preview in the browser.

CSS Box Resize Generator

Generate CSS resize property code for textareas and divs. Pick horizontal, vertical, both, or none, preview the result, and then copy the snippet for free.

XML to Python POJO Generator

Convert XML documents into Python dataclass models with nested types in the browser.

Avro Formatter

Format and minify Apache Avro schema JSON with validation and instant browser-side output.

YAML to TypeScript POJO Generator

Convert YAML documents into TypeScript interfaces and types in the browser.

HTML Progress Generator

Build accessible HTML progress elements with live preview and copy-ready markup.

PX to REM Converter

Convert pixel values to rem (and related CSS units) instantly in the browser.

XML to Go POJO Generator

Convert XML documents into typed Go structs (POJO style) with nested types in the browser.

JSONify String

Turn any plain text into a valid JSON string literal using JSON.stringify-ready to paste into JSON, configs, or code.

PX to Point Converter

Convert CSS pixels to typographic points using the standard 96 CSS px per inch mapping (1 pt = 1/72 in).

Percent to PX Converter

Convert font-size or layout percentages to pixels using a configurable base size, with EM, REM, and PT equivalents.

HTML BDO Generator

Wrap text in an HTML bdo element with LTR or RTL direction. Copy-ready markup in the browser.

Base64 to JavaScript Converter

Decode Base64 to UTF-8 text and emit safe JavaScript string literals or Uint8Array snippets in the browser.

HTML Date and Time Input Generator

Configure HTML date, time, and datetime-local inputs and copy accessible, validation-friendly markup.

Xml To Json Schema Generator

Infer JSON Schema from XML structure in the browser

Rem To Percent Converter

Convert rem units to percent, px, pt, and related CSS values

Point To Px Converter

Convert typographic points to CSS pixels using 96 px per inch mapping

HTML Text Input Generator

Build type=text input markup with common attributes and live preview

Html Radio Generator

Build accessible HTML radio inputs with labels, groups, and copy-ready markup.

Rem To Point Converter

Convert rem values to typographic points using your root font size and standard CSS px-to-pt mapping.

Sql Table Generator

Design columns, data types, and constraints, then generate CREATE TABLE SQL for MySQL, PostgreSQL, and SQLite right in your browser. Free, no signup needed.

Json To Go Pojo Generator

Turn JSON payloads into nested Go structs with inferred types in the browser

Percent To Em Converter

Convert CSS percent values to em units using standard font-size relationships

HTML Mark Text Generator

Generate HTML that wraps chosen phrases with mark tags while escaping the rest safely. Copy snippets for blogs and tutorials.

XML to C Sharp POJO Generator

Paste XML sample and generate Newtonsoft.Json C# POCO classes with JsonProperty mappings in your browser.

HTML Emphasize Text Generator

Wrap matching phrases with strong emphasis or idiomatic italic tags plus safe HTML escaping.

YAML to Dart POJO Generator

Generate Dart data classes with fromJson/toJson maps from YAML samples in the browser.

JSON to C Sharp POJO Generator

Paste JSON and generate C# POCO classes with Newtonsoft.Json JsonProperty attributes instantly in your browser. No signup, ready to copy into your project.

EM to PX Converter

Convert CSS em values into pixels, plus percent, rem, and points using a configurable parent font size.

JSON to JavaScript POJO Generator

Generate JavaScript ES6 classes from JSON samples with constructor and toJSON in the browser.

XML to Dart POJO Generator

Generate Dart data classes with fromJson/toJson maps from XML samples in the browser.

YAML to JavaScript POJO Generator

Generate JavaScript ES6 classes from YAML samples with constructor and toJSON in the browser.

JSON to JSON Schema Generator

Infer a JSON Schema (Draft 7) from any JSON sample with property type detection in the browser.

Percent To Rem Converter

Convert percent values to rem (and px, pt) instantly using a configurable root font size.

Cubic Bezier Curve Generator

Design a cubic-bezier easing curve with draggable handles and instantly copy the CSS transition timing function.

CSS Background Color Generator

Pick a background color, preview it on a sample block, and copy the CSS background-color rule or full HTML snippet.

XML To TypeScript POJO Generator

Convert XML data into TypeScript interface definitions instantly in your browser.

YAML To JSON Schema Generator

Generate Draft-07 JSON Schemas from arbitrary YAML documents instantly in your browser.

HTML To Base64 Converter

Encode HTML markup to a Base64 string instantly in your browser for safe embedding and transport.

JSON to Proto Converter

Turn sample JSON into Protocol Buffers v3 message definitions for services and codegen.

CSS to Base64 Converter

Encode CSS text to Base64 safely for data URLs and inline embedding.

YAML to Python POJO Generator

Generate Python dataclass models from YAML structure for config and API typing.

Base64 to HTML Converter

Decode Base64 strings back to UTF-8 HTML markup in your browser.

HTML Dialog Generator

Configure dialog options and copy native HTML dialog element snippets.

XML to JavaScript POJO Generator

Turn XML samples into JavaScript ES6 classes with fromJSON and toJSON in the browser.

HTML Meter Generator

Configure value, min, max, low, high, optimum, and optional id or class for a native HTML meter tag with live preview.

Yaml To Go Pojo Generator

Convert YAML documents into nested Go structs in the browser for configs and APIs.

Create Integer Array

Convert a list of integers into formatted language-specific array declarations (JS, Python, PHP, Java, C++, etc.).

Edit JSON

Edit, format, validate, and visualize your JSON data online with syntax highlighting, an interactive tree explorer, and instant browser-side processing.

Extract JSON Keys

Extract all keys from JSON data instantly. Get a list of all object keys in flat, nested, or dot-notation format with custom sorting and formatting options.

Extract JSON Values

Extract values from JSON data instantly. Filter values by key name, JSON path, or data type and export them as a clean list or JSON array.

Flatten JSON Object

Flatten nested JSON objects into a single-level key-value map online. Customize separators, handle arrays, and download or copy the flattened JSON output instantly.

Hide JSON Strings

Mask, censor, or anonymize string values inside your JSON files while preserving the overall JSON structure and data schema for testing and privacy.

Censor JSON

Remove, redact, or censor sensitive information (specific keys, number values, ranges, or custom text patterns) from your JSON files.

Analyze JSON

Validate your JSON strings and display detailed statistics including total objects, keys, nested depths, and data type breakdowns.

CSS Clip Path Generator

Generate CSS clip-path polygons and shapes with an interactive editor. Free online CSS clip path generator with real-time preview.

CSS Box Shadow Generator

Generate CSS box-shadow code with an interactive editor. Free online CSS box shadow generator with real-time preview and presets.

CSS Gradient Generator

Generate CSS linear and radial gradients with an interactive color picker. Free online CSS gradient generator with real-time preview.

CSS Background Pattern Generator

Generate beautiful CSS-only background patterns with customizable colors, sizes, and pattern types for your web projects using pure CSS.

CSS Glassmorphism Generator

Create beautiful frosted glass effects using CSS backdrop-filter blur with customizable glass color, blur intensity, opacity, and border settings.

CSS Text Glitch Effect Generator

Generate CSS keyframe-based text glitch effects with customizable colors, intensity, and animation speed for stunning visual effects.

CSS Triangle Generator

Create pure CSS triangles with custom width, height, direction, and color, then copy the border code for your projects. It's free and runs in your browser.

CSS Border Radius Generator

Generate CSS border-radius code with visual preview for creating rounded corners, circular elements, and custom border radius shapes.

Code to Image Converter

Convert code snippets into beautiful images with syntax highlighting, customizable themes, fonts, and backgrounds for sharing on social media.

React Native Shadow Generator

Generate React Native shadow styles for iOS and Android with real-time preview. Free online React Native box shadow generator.

JavaScript Minifier

Minify and compress JavaScript code instantly. Free online JavaScript minifier tool to reduce JS file size for better website performance.

CSS Autoprefixer

Automatically add vendor prefixes to your CSS code for cross-browser compatibility. Free online CSS autoprefixer with customizable browser targets.

HTML Formatter

Format messy HTML code instantly with this free online HTML formatter. It beautifies markup with clean indentation, readable structure, and no signup.

JSON Minifier

Minify JSON code by removing whitespace and unnecessary characters to reduce file size

Lua Beautifier

Format and beautify Lua code with proper indentation and syntax highlighting. Free online Lua beautifier for clean, readable Lua scripts.

SQL Minifier

Minify SQL code by removing unnecessary spaces, indentation and newlines to reduce file size

SVG to JSX Converter

Convert SVG images to React JSX components instantly. Paste SVG code and get clean, optimized JSX output ready for your React project.

CSS Grid Generator

Design CSS grid layouts visually with our free online CSS Grid Generator. Click to place items, drag to span rows/columns, and export clean CSS code instantly.

Curl to JSON Converter

Free online Curl to JSON converter. Parse cURL commands into structured JSON format or ready-to-use code snippets for Python, Node.js, PHP, and Go.

Django Secret Key Generator

Generate cryptographically secure SECRET_KEY values for Django projects with entropy analysis and one-click copy.

Env File Generator

Generate .env files for Next.js, Django, Laravel, Express, and more with auto-generated secrets and multiple export formats.

HTML Compressor

Compress and minify HTML code online. Remove whitespace, comments, and line breaks to reduce file size for faster page loading.

Base64 File Converter

Convert any file to Base64 encoded string and decode Base64 strings back to downloadable files with preview support. Free online Base64 file encoder and decoder.

Basic Auth Generator

Generate HTTP Basic Authentication headers from username and password for API testing and web development. Free online Basic Auth header generator.

Bcrypt Generator

Generate bcrypt password hashes with configurable salt rounds and verify hashes against plain text. Free online bcrypt hash generator and checker.

Benchmark Builder

Compare multiple performance test suites with mean, variance, and ratio analysis. Generate markdown tables and bullet list reports for your benchmarks.

BIP39 Mnemonic Generator

Generate secure BIP39 mnemonic seed phrases for cryptocurrency wallets with customizable entropy and multi-language word list support.

Chmod Calculator

Calculate Unix file permissions in octal, symbolic, and text representations instantly with our free online chmod calculator.

Device Information

Instantly view your screen resolution, user agent, browser engine, operating system, hardware details, and network connection properties with our device information tool.

Docker Run to Docker Compose Converter

Convert docker run commands into clean, ready-to-use docker-compose.yml files instantly with syntax highlighting and copy support.

Email Normalizer

Standardize email addresses by removing dots, plus-tag aliases, converting to lowercase, and resolving domain aliases.

Git Commands Memo

An interactive Git cheat sheet with search, categorizations, and real-time custom command parameter inputs.

HTTP Status Codes

Browse and search all HTTP status codes with descriptions. A complete reference of HTTP response codes from 1xx to 5xx.

IBAN Validator and Parser

Validate, parse, and extract information from IBAN numbers. Check IBAN validity, get country code, BBAN, and friendly format instantly.

Integer Base Converter

Convert integers between any number bases from 2 to 64. Supports binary, octal, decimal, hexadecimal, base64, and custom bases with BigInt precision.

Keycode Info

Find key code, code, keyCode, location, and modifier information for any keyboard press instantly in your browser.

Math Evaluator

Evaluate mathematical expressions instantly with support for trigonometry, logarithms, square roots, and more. Free online math expression evaluator.

MIME Types

Look up MIME types and their associated file extensions. Free online MIME types reference tool with search and complete listing.

OTP Code Generator

Generate TOTP codes, validate one-time passwords, and create QR codes for authenticator apps with our free online OTP code generator tool.

Password Strength Analyzer

Analyze password strength with entropy calculation, crack time estimation, and character set analysis using our free online password strength analyzer tool.

Phone Parser and Formatter

Parse, validate, and format international phone numbers with support for multiple output formats using libphonenumber.

Regex Memo

Quick reference guide for regular expression syntax including character classes, quantifiers, boundaries, groups, and flags. Free online regex cheat sheet.

Regex Tester

Test regular expression patterns against text with real-time matching, flags support, and detailed match results. Free online regex tester.

SafeLink Decoder

Decode Microsoft Outlook SafeLinks protected URLs online. Extract the original URL from SafeLinks bypassing link protection to reveal the actual destination.

String Obfuscator

Mask sensitive strings by keeping only the first and last characters visible. Perfect for obscuring API keys, tokens, passwords, and personal data.

SVG Placeholder Generator

Create customizable SVG placeholder images with custom dimensions, colors, and text for web development mockups and design prototypes.

Token Generator

Generate random secure tokens with customizable character sets including uppercase, lowercase, numbers, and symbols. Adjustable length up to 512 characters.

TOML to YAML Converter

Convert TOML configuration files to YAML format instantly in your browser with real-time conversion, syntax validation, and support for complex nested structures.

ULID Generator

Generate Universally Unique Lexicographically Sortable Identifiers (ULIDs) instantly in your browser with customizable quantity and format options.

User Agent Parser

Parse any user agent string to identify browser name, version, rendering engine, operating system, device model, and CPU architecture with instant results.

YAML to TOML Converter

Convert YAML data to TOML format instantly with real-time browser-side conversion. Free online YAML to TOML converter.

CSS To JS Converter

Transform CSS rules into JavaScript style objects for React, React Native, and inline styles with real-time conversion.

CSS To Tailwind Converter

Transform regular CSS into Tailwind @apply directives with configurable rem conversion and arbitrary property support.

Flow To JavaScript Converter

Strip Flow type annotations and convert Flow code to plain JavaScript instantly in your browser.

Flow To TypeScript Declaration Converter

Convert Flow type annotations into TypeScript declaration files (.d.ts) instantly in your browser.

Flow To TypeScript Converter

Transform Flow annotated JavaScript into TypeScript source code with accurate type syntax in your browser.

GraphQL To Components Generator

Generate TypeScript Apollo, Angular, Stencil, and urql components from GraphQL schema and documents in your browser.

GraphQL To Flow Converter

Generate Flow type definitions from GraphQL schema and operation documents instantly in your browser.

GraphQL To Fragment Matcher

Generate Apollo Client fragment matcher introspection data from GraphQL schema SDL in your browser.

GraphQL To Introspection JSON

Convert GraphQL schema SDL to introspection JSON for tooling, codegen, and schema validation.

GraphQL To Java Converter

Convert GraphQL schema SDL into Java POJO classes instantly with this free browser-based tool. No signup needed; generate clean, ready-to-use Java types fast.

GraphQL To Resolvers Signature

Create TypeScript, Flow, or Java resolver signature stubs from GraphQL schema and documents in your browser.

GraphQL To Schema AST

Convert GraphQL schema SDL to clean Schema AST output for tooling, validation, and codegen pipelines. Runs instantly free in your browser, no signup needed.

GraphQL To TypeScript MongoDB

Instantly convert your GraphQL schema SDL into accurate TypeScript types for MongoDB documents. Free browser tool with real-time codegen and no signup.

GraphQL To TypeScript

Generate TypeScript types and operation types from GraphQL schema and documents with real-time browser-side codegen.

JS Object To JSON

Transform JavaScript object literals into valid JSON with proper quoting, formatting, and real-time conversion in your browser.

JS Object To TypeScript

Generate TypeScript interfaces and type aliases from JavaScript object literals with optional mono-type output in your browser.

JSON Schema To OpenAPI Schema

Transform JSON Schema Draft 04 documents into OpenAPI 3.0 schema objects with nullable types, pattern properties, and dependency mapping.

JSON Schema To Protobuf

Convert JSON Schema definitions to Protocol Buffers .proto files instantly in your browser with real-time preview.

JSON Schema To TypeScript

Generate TypeScript interfaces and type aliases from JSON Schema documents with real-time browser-side conversion.

JSON Schema To Zod

Convert JSON Schema documents into Zod validation schemas with customizable root name and real-time browser-side conversion.

JSON To BigQuery Schema

Generate BigQuery table schemas from sample JSON data with real-time browser-side conversion for data pipeline setup.

JSON To Flow Converter

Generate Flow type definitions from JSON sample data with configurable namespace, prefix, and root name in the browser.

JSON To Go BSON Converter

Convert JSON objects into Go bson.M and bson.A literal code for MongoDB drivers with instant browser-side transformation.

JSON To GraphQL

Convert JSON sample data into GraphQL type definitions with real-time browser-side schema generation.

JSON To Io TS

Generate io-ts runtime validators and TypeScript codecs from JSON sample data in the browser.

JSON To JSDoc

Generate JSDoc typedef annotations from JSON sample data with real-time browser-side conversion.

JSON To Kotlin

Generate Kotlin data classes from JSON sample data with kotlinx.serialization and Jackson output modes.

JSON To MobX State Tree

Convert JSON sample data into MobX State Tree model definitions with real-time browser-side Babel transformation.

JSON To Mongoose Schema

Paste sample JSON to instantly generate Mongoose schema definitions with accurate type inference, all in your browser. Free, no signup, and ready to copy.

JSON To MySQL

Paste JSON sample data and this free browser tool generates MySQL CREATE TABLE statements with inferred column types and foreign key relationships in seconds.

JSON To PropTypes

Convert JSON sample data into React PropTypes shape definitions for runtime prop validation in components.

JSON To Rust Serde

Generate Rust Serde structs with Serialize and Deserialize derives from JSON sample payloads.

JSON To Sarcastic

Convert JSON sample data into Sarcastic runtime type validators for JavaScript applications.

JSON To Scala Case Class

Generate Scala case classes from JSON sample data with real-time browser-side conversion and customizable root class names.

JSON To Zod

Convert JSON sample data into Zod validation schemas with customizable root schema name and real-time browser-side conversion.

JSON-LD To Compacted

Compact expanded JSON-LD documents using a JSON-LD context with real-time browser-side processing.

JSON-LD To Expanded

Expand compact JSON-LD documents into fully qualified IRIs and typed nodes with real-time browser-side conversion.

JSON-LD To Flattened

Flatten JSON-LD documents into a single flat JSON node in your browser. This free tool uses a JSON-LD context to simplify linked data for easier processing.

JSON-LD To Framed

Frame JSON-LD documents with a JSON-LD frame to extract specific subgraphs instantly.

JSON-LD To Normalized

Normalize JSON-LD documents into canonical N-Quads format with real-time browser-side processing.

JSON-LD To N-Quads

Convert JSON-LD documents to N-Quads RDF serialization format with real-time browser-side processing.

Object Styles To Template Literal

Transform styled-components and emotion object styles into CSS template literals with real-time browser-side Babel conversion.

SVG To React Native

Transform SVG markup into React Native SVG components with SVGO optimization and real-time browser-side conversion.

TypeScript To Flow

Convert TypeScript type definitions into Flow annotations instantly in your browser. This free online converter runs on flowgen with no signup required.

TypeScript To JavaScript

Remove TypeScript type annotations and output plain JavaScript with JSX support and real-time browser-side Babel conversion.

TypeScript To JSON Schema

Generate JSON Schema from TypeScript interfaces and type aliases instantly in your browser with real-time output.

TypeScript To TypeScript Declaration

Convert TypeScript source code into .d.ts declaration files directly in your browser with emitDeclarationOnly. Free, no signup, and nothing to install.

TypeScript To Zod

Convert TypeScript interfaces and type aliases into Zod validation schemas instantly in your browser. Free, no signup, and great for runtime type safety.

UTM Builder

Build UTM-tagged URLs with source, medium, campaign, content, and term parameters for marketing analytics.

Javascript Deobfuscator

Deobfuscate and beautify obfuscated JavaScript code to recover readable source in your browser.

SVG Path Optimizer

Clean inline SVG markup with SVGO path optimization. Simplify paths, remove metadata, and shrink file size entirely in your browser.

Markdown For Agents Checker

Check if any website supports Cloudflare's Markdown for Agents content negotiation standard. Test HTTP text/markdown response headers, token savings, and AI content compatibility.

Cyclomatic Complexity Calculator

Calculate McCabe cyclomatic complexity of software code and control flow graphs with testability risk analysis.

RAM Latency Calculator

Convert DDR RAM CAS latency, clock speed, and timings to true nanosecond latency for memory performance comparison.

RAID Calculator

Compare RAID 0, 1, 5, 6, and 10 usable capacity, read/write speed gain, fault tolerance, and cost per usable terabyte.

CSS Checkbox Generator

Create accessible custom CSS checkboxes with live preview, color and size controls, and copy-ready HTML and CSS.

CSS Loader Generator

Generate pure CSS loading spinners and animations with custom color, size, and speed. Preview instantly, then copy the code for free in your own browser.

CSS Switch Generator

Build pure CSS toggle switches for settings and forms with live preview and copy-ready HTML and CSS.

API Header Parser

Parse pasted HTTP headers into readable fields and JSON, preserve duplicate headers, and understand common request and response headers in your browser.

API Key Format Validator

Validate API key formats for OpenAI, AWS, Stripe, GitHub, and 18+ providers with prefix, length, and character checks that run entirely in your browser.

CSS Border Generator

Design CSS borders visually with per side width, style, color, and corner radius controls, then copy the generated CSS instantly.

CSS Button Generator

Design CSS buttons visually with custom colors, hover and active states, padding, borders, radius, and shadows, then copy the generated HTML and CSS instantly.

CSS Card Generator

Design CSS cards visually with custom padding, radius, shadows, colors, and hover lift effects. Preview the card live and copy the generated HTML and CSS instantly.

CSR Generator

Generate a real PKCS#10 certificate signing request with a new RSA key pair in your browser. Fill in the subject fields, add SAN entries, and download the CSR and private key.

CSS Animation Generator

Build CSS keyframe animations visually with presets for bounce, fade, slide, rotate, pulse, shake, and more. Tune duration, delay, easing, and fill mode, preview live, and copy the generated CSS.

CSS Filter Generator

Generate the CSS filter property visually with sliders for blur, brightness, contrast, grayscale, hue-rotate, invert, opacity, saturate, and sepia. Preview on a sample image and copy the CSS code instantly.

CSS Flexbox Generator

Build Flexbox layouts visually with all container properties including direction, wrap, justify-content, align-items, gap, and per item controls, with a live preview and copyable CSS.

CSS Specificity Calculator

Calculate the specificity of any CSS selector and compare multiple selectors side by side. See the inline, ID, class, and element breakdown, ranking, and which rule wins a conflict.

CSS Variables Generator

Build CSS custom properties for design systems with add and remove rows, color pickers, four theme presets, auto -- prefix, a live swatch preview, and copy or .css download export.

CSS Cursor Gallery

Browse every CSS cursor keyword with live hover previews, search and filter, one click copying of the cursor property, and a test pad to feel each cursor before using it.

Docker Compose Validator

Validate docker-compose.yml files in your browser with YAML syntax checks, service and port validation, depends_on reference checks, and best practice warnings.

Dockerfile Generator

Generate production-ready Dockerfiles for Node.js, Python, Go, PHP, Ruby, and static sites with base image selection, build steps, environment variables, exposed ports, and .dockerignore patterns.

Dummy JSON Generator

Generate dummy JSON data with realistic names, emails, addresses, companies, and more. Choose fields and record counts for instant test fixtures, right in your browser.

Email Validator

Validate email addresses with RFC 5322 format checks and live MX record lookups. Single and bulk modes, per domain caching, and no data leaving your browser.

Env File Parser

Parse .env files into a structured key and value table with type detection, validation issues, duplicate warnings, and JSON export. Nothing leaves your browser.

Git Commit Message Generator

Build conventional commit messages with type, scope, description, body, footer, and breaking change notes. Live preview, subject length check, and copy ready output.

Gitignore Generator

Generate a combined .gitignore file for any stack. Select from 40+ templates for languages, frameworks, IDEs, and operating systems, then copy or download the ready to use file.

Gradient Mesh Generator

Create mesh gradient backgrounds visually. Set the grid size, drag color points, shuffle or pick colors, adjust the blur, then copy the CSS or download a PNG image.

Gradient Text Generator

Create CSS gradient text effects with custom colors, direction, and live preview. Copy production-ready CSS instantly.

.htaccess Generator

Generate Apache .htaccess rules for HTTPS, www redirects, browser caching, gzip compression, security headers, hotlink protection, and clean URLs.

HTML Preview

Write or paste HTML, CSS, and JavaScript and see the rendered page instantly in a sandboxed preview frame with responsive width presets.

HTML Validator

Check HTML for unclosed tags, duplicate IDs, missing alt text, deprecated elements, and accessibility issues with line numbers, all in your browser.

.htpasswd Generator

Generate .htpasswd entries for Apache and Nginx basic authentication with bcrypt, MD5 (apr1), and SHA-1 hashing, multiple users, and a downloadable password file.

JSON Schema Validator

Validate JSON documents against a JSON Schema in your browser. See every error with its JSON path, keyword, and message, with draft-07 keyword and format support.

JSON to Swift Converter

Convert JSON into Swift Codable structs with proper types, nested structs, optionals, and CodingKeys. Free, instant, and runs entirely in your browser.

Keyframe Animation Builder

Build CSS keyframe animations visually. Add keyframe stops, set transform, opacity, and color values, preview the animation live, and copy ready to use @keyframes CSS.

License Generator

Generate open source license files in your browser. Choose from MIT, Apache 2.0, GPL 3.0, BSD, ISC, MPL, LGPL, AGPL, and the Unlicense, fill in your name and year, then copy or download the finished LICENSE file.

Markdown to Notion

Convert Markdown into Notion API block JSON in real time. Headings, lists, to-dos, quotes, code blocks, tables, links, and inline formatting are mapped to rich_text arrays you can paste straight into the Notion API.

Mermaid Diagram Generator

Write Mermaid syntax and render flowcharts, sequence, class, state, ER, Gantt, pie, git, and mind map diagrams live. Export your diagram as SVG or PNG.

Mock API Response Generator

Generate mock HTTP API responses with a custom method, status code, headers, delay, and JSON, XML, or text body. Copy the full response instantly, all in your browser.

NanoID Generator

Generate secure, URL-friendly NanoIDs in bulk with a configurable length, alphabet options, and copy or download output. Runs entirely in your browser.

Neumorphism Generator

Create soft UI CSS in seconds. Pick flat, concave, convex, or pressed shapes, tune the background, distance, intensity, blur, radius, and color, preview the result live, and copy production ready CSS.

Nginx Config Generator

Generate a production ready Nginx server block from a simple form. Configure static sites, reverse proxies, HTTPS, redirects, gzip, caching, and security headers, then copy or download the config.

OpenAPI Validator

Paste an OpenAPI or Swagger specification as JSON or YAML and validate it instantly in your browser. Review every schema error with its location, plus a summary of paths, operations, and components.

OTP Generator

Generate cryptographically secure numeric, alphanumeric, or hexadecimal one-time passcodes in bulk. Copy individual codes or download the batch. Runs entirely in your browser.

Package JSON Generator

Build a valid package.json for any Node.js project with scripts, dependencies, license, and repository fields, then copy or download the file. Runs entirely in your browser.

Regex Explainer

Break down JavaScript regular expressions into plain-language explanations with optional live match testing.

Scrollbar Styler

Preview and copy cross-browser CSS for styled scrollbars with colors, width, radius, and hover states.

Spacing Scale

Build linear or geometric spacing scales from a base value and export CSS variables or Tailwind theme spacing.

SSH Key Generator

Generate SSH key pairs in OpenSSH format with SHA-256 fingerprints entirely in your browser.

Table Styler

Customize HTML table colors, borders, stripes, and hover effects with live preview and copy-ready CSS.

Text Shadow Generator

Create CSS text-shadow effects with live preview, multiple layers, and copy-ready code.

Typography Scale Generator

Build harmonious font-size scales from a base size and musical ratio, with live preview and CSS, SCSS, or Tailwind export.

JSONata Tester

Run JSONata expressions against JSON documents in your browser with instant results and error feedback.

WebSocket Tester

Connect to WebSocket servers, send messages, and inspect live responses from your browser.

JSON Unflatten

Restore nested JSON from flat dot-notation keys. Merge flattened objects back into hierarchical structures in your browser.

CSS Units Converter

Convert px, rem, em, pt, cm, mm, in, pc, ch, vw, and vh with a configurable root font size in your browser.

CSS Validator

Check CSS for syntax errors with line and column details. Parse stylesheets locally before you deploy.

JSON Keys Case Converter

Recursively rename JSON object keys to camelCase, snake_case, kebab-case, PascalCase, or SCREAMING_SNAKE_CASE.

JSON to JavaScript Object Converter

Convert JSON to JavaScript object literal syntax with unquoted keys and readable formatting.

Markdown Remover

Strip Markdown syntax and output clean plain text while preserving readable structure.

Markdown to Pug Converter

Turn Markdown documents into Pug (Jade) template syntax in your browser with live preview.

MongoDB ObjectId Validator

Check whether a string is a valid 24-character hexadecimal MongoDB ObjectId before using it in queries.

Multiple URL Opener

Paste a list of links and open every URL in a new browser tab with one click.

Pug to HTML Converter

Compile Pug templates to HTML in the browser with live syntax feedback.

Query String to JavaScript Object Converter

Convert URL query strings into JavaScript object literals with nested key parsing.

AsyncAPI Validator

Validate AsyncAPI YAML or JSON structure and summarize channels, operations, messages, and servers in the browser.

Certificate Chain Builder

Inspect PEM TLS certificate chains, detect ordering issues, duplicate subjects, and missing intermediates in the browser.

X.509 Certificate Decoder

Decode PEM X.509 certificates and view subject, issuer, validity, SANs, and SHA-256 fingerprints locally.

CloudEvents Validator

Validate CloudEvents JSON for required attributes, spec version, and common content-type mistakes in the browser.

Cookie Parser

Parse Cookie and Set-Cookie header strings into name, value, domain, path, and attribute fields in the browser.

Passwd Shadow Parser

Decode /etc/passwd and shadow hash lines into fields and identify hash algorithms for local inspection.

CUID2 Generator

Create secure, collision-resistant CUID2 identifiers in the browser with bulk generation and copy options.

Curl to HTTPie

Translate curl commands into equivalent HTTPie CLI syntax with headers, auth, and JSON body fields.

JSON Array Chunk

Divide a JSON array into fixed-size chunks for batching, pagination, or parallel processing.

JSONL Validator

Check each line of a JSONL file for valid JSON and see line-level error messages.

YAML Anchor Expander

Resolve YAML anchors and aliases into fully inlined YAML without references.

Markdown Front Matter Extractor

Split Markdown into front matter and body, with parsed metadata as JSON.

Env To Shell Exports

Turn .env key-value lines into bash and zsh export statements ready to paste in a terminal.

GraphQL Variables Validator

Check GraphQL variable JSON against an operation's declared types and required fields in the browser.

GraphQL Operation Complexity Estimator

Estimate field-cost complexity for GraphQL operations to spot expensive queries before they hit your API.

Grpc Proto Viewer

Parse Protocol Buffer schema files and browse services, messages, and fields in the browser.

HTTPie to cURL

Translate HTTPie CLI requests into equivalent curl commands with headers and JSON bodies.

HTTP Multipart Form Data Builder

Compose multipart/form-data bodies and matching curl snippets from text and file fields.

HTTP Request Replay Sanitizer

Redact secrets from captured HTTP requests and emit safer curl or raw replay snippets.

JMESPath Lite Query

Run JMESPath expressions against JSON documents and inspect matching nodes instantly in your browser.

JSON Patch Apply

Apply RFC 6902 JSON Patch operations to a document and preview the patched JSON instantly.

JSON Patch Diff

Compare two JSON documents and generate an RFC 6902 patch that transforms the source into the target.

JSON Pointer Resolver

Resolve RFC 6901 JSON Pointers against a document and preview the referenced value.

JSON Schema Compatibility Diff

Compare two JSON Schemas for breaking changes in required fields, properties, and enums.

JSON Schema Faker

Generate realistic sample JSON instances from a JSON Schema in your browser.

JSON to Dart

Convert JSON samples into Dart classes with quicktype for Flutter and mobile apps.

JSON to Pydantic

Generate Pydantic v2 BaseModel classes from sample JSON in your browser.

JSON to Ruby Hash

Turn sample JSON into Ruby hash literals and typed structs with quicktype.

JSX to HTML

Transform JSX snippets into plain HTML by stripping React expressions and props.

JWK Rotation Diff

Compare two JWKS documents and highlight added, removed, and changed keys.

JWKS Inspector

Parse a JWKS URL or JSON, list key metadata, thumbprints, and PEM exports.

Kafka Message Header Viewer

Inspect Kafka record headers as decoded key-value pairs with hex and UTF-8 views for consumer debugging.

KSUID Generator

Create K-Sortable Unique Identifiers as 27-character Base62 strings for distributed IDs.

List to JSON Array

Turn line-separated or comma-separated lists into a valid JSON array with trimming, deduplication, and type inference.

Markdown List Renumber

Fix broken Markdown list numbering, normalize markers, and convert between bullets and numbered lists in your browser.

Markdown List to JSON

Turn Markdown bullet and numbered lists into nested JSON arrays with configurable nesting rules.

Markdown Table to HTML

Transform Markdown pipe tables into clean HTML table markup with alignment preserved.

Markdown to JSX

Turn Markdown snippets into React JSX with className attributes and copy-ready component fragments.

MQTT Topic Matcher

Test MQTT topic filters with + and # wildcards against sample publish topics.

OAuth Authorization URL Builder

Compose OAuth 2.0 and OpenID Connect authorization URLs with scopes, state, nonce, and optional PKCE parameters in your browser.

OIDC Discovery Inspector

Parse OpenID Connect discovery JSON, list endpoints, signing algorithms, and supported grant types in your browser.

OIDC ID Token Validator

Check OIDC ID token claims including nonce, auth_time, and at_hash without uploading tokens to a server.

OpenAPI Breaking Change Diff

Compare two OpenAPI specs and flag removed paths, stricter schemas, and other breaking API changes.

OpenAPI Security Scheme Inspector

Parse OpenAPI 3 documents and summarize securitySchemes, OAuth flows, and per-operation security requirements in your browser.

OTP URI Builder

Generate RFC 6238 compatible otpauth:// URIs for authenticator apps from secret, issuer, and account name locally.

Slugify String

Turn any text into a clean, lowercase, hyphenated URL slug. Remove special characters for SEO-friendly links.

Outline to List

Turn tab or space indented outlines into nested Markdown or HTML lists, or flatten lists back to an outline.

OAuth PKCE Generator

Create a cryptographically random PKCE code verifier and S256 code challenge for OAuth 2.0 authorization code flows.

OAuth Token Response Inspector

Parse OAuth token endpoint JSON, decode JWT access or ID tokens, and review expires_in and refresh token fields locally.

OCSP Response Decoder

Decode Base64 or PEM OCSP response bytes and inspect ASN.1 structure and certificate status hints in your browser.

Postman Collection Viewer

Parse and browse Postman Collection v2.1 JSON: folders, requests, methods, and URLs in the browser.

Protobuf Binary Decoder

Decode protobuf binary wire bytes into field numbers, wire types, and scalar values in your browser.

Protobuf JSON Converter

Convert JSON to protobuf binary and decode protobuf bytes to JSON using a .proto schema in the browser.

Querystring to cURL

Build a cURL GET or POST command from a URL, query string, headers, and optional JSON body.

SAML Assertion Inspector

Paste a SAML assertion XML and read issuer, subject, audience, session times, and attribute statements.

SAML Attribute Mapper

Paste SAML XML and map IdP attribute names to app claim keys with a simple mapping table. Outputs JSON claims in the browser.

SAML Condition Time Validator

Check SAML Conditions timestamps against the current clock with configurable skew for federation debugging.

SAML IdP Metadata Builder

Generate SAML 2.0 IdP EntityDescriptor metadata with SSO, SLO, and X.509 signing certificate.

SAML SP Metadata Builder

Generate SAML 2.0 SP metadata with ACS, optional SLO, NameID format, and signing certificate.

SAML Response Decoder

Decode Base64 or DEFLATE SAMLResponse payloads to XML and summarize issuer, subject, audience, and status.

SAML Signature Reference Inspector

List XML Signature methods, Reference URIs, transforms, digest algorithms, and embedded X509 certificates in SAML messages.

SCIM Filter Tester

Run RFC 7644-style filter strings against sample SCIM User JSON and see which records match.

SCIM User Payload Builder

Compose a SCIM Core User resource JSON payload for provisioning API tests.

Server Sent Events Parser

Parse SSE stream text into events with data payloads, event types, IDs, retry hints, and comments.

Snowflake ID Generator

Create Twitter-style 64-bit Snowflake IDs with custom epoch, worker ID, and sequence bits, decode timestamps in the browser.

SOAP Envelope Builder

Compose SOAP 1.1 or 1.2 envelope XML from namespace URI, operation name, and body payload for integration tests.

SOAP Fault Parser

Extract fault code, reason, actor, role, and detail from SOAP 1.1 and 1.2 fault responses in the browser.

SOAPAction Header Builder

Generate SOAPAction and Content-Type headers for SOAP 1.1 and 1.2 HTTP requests from namespace and operation.

SOAP Request Debugger

Paste a SOAP HTTP request or envelope XML to inspect SOAPAction, Content-Type, version, operation name, and body payload.

SQL Select Builder

Compose SELECT statements with column lists, WHERE filters, ORDER BY, and LIMIT without writing SQL by hand.

SQL Update Builder

Build safe UPDATE queries with SET assignments and optional WHERE clauses for testing and documentation.

Strftime Playground

Test C and Python strftime format strings against a datetime and see live output with a directive reference.

UUID Inspector

Parse UUIDs to reveal version, variant, RFC representations, and embedded timestamps for v1, v6, and v7.

UUID v7 Generator

Create sortable, time-ordered UUID version 7 identifiers with RFC 9562 layout in the browser.

Accept Language Parser

Parse HTTP Accept and Accept-Language headers, sort languages by q-factor, and inspect quality values.

Bearer Auth Header Builder

Construct Authorization header values for Bearer, Basic, API key, and custom schemes with curl and fetch snippets.

JSON to HTML Form

Turn JSON objects into labeled HTML form fields with types inferred from each value.

Link Header Builder

Compose RFC 8288 Link headers with relations, anchors, and target attributes for APIs and pagination.

Query Params Diff

Diff query strings from two URLs to see added, removed, changed, and unchanged parameters.

Query String Parser

Parse raw query strings into a key/value table or nested JSON with bracket notation and repeated keys.

Relative URL Resolver

Resolve a relative reference against a base URL to produce the absolute target in the browser.

Semver Comparator

Compare semver versions, inspect major/minor/patch/prerelease, and test satisfaction against npm-style ranges.

Regex Escape Unescape

Escape plain text into a literal regex pattern or unescape an escaped pattern back to readable text in your browser.

Regex Match Lines

Run a regular expression on each line of text and see matches, non-matches, and capture groups in a table.

Regex Named Group Converter

Convert regex patterns and replacements between numbered groups and named capture groups with live output.

Semver Bump

Bump major, minor, patch, or prerelease on a semver string using npm semver rules.

Set Cookie Builder

Compose RFC 6265 Set-Cookie headers with Path, Domain, Max-Age, Secure, HttpOnly, and SameSite.

Shell Arg Escaper

Quote and escape strings safely for bash, sh, PowerShell, and Windows cmd.

Srcset Generator

Build img srcset and sizes attributes from width lists and filename patterns.

User Agent Builder

Compose browser User-Agent tokens from platform, engine, and version presets for testing.

WWW Authenticate Parser

Split WWW-Authenticate and Authorization challenge headers into scheme and parameter tables.

WSDL Operation Explorer

Paste WSDL XML to list port types, operations, messages, bindings, and service endpoints in your browser.

WSDL to Sample SOAP

Pick a WSDL operation and generate a starter SOAP envelope with namespaces and soapAction hints in your browser.

SQL Sandbox

Load local CSV or JSON files into an in-memory SQLite database and run SELECT queries without uploading data.

Hex Dump Viewer

Upload a file or paste text to view color-coded hex dumps with offset, ASCII columns, and byte search in your browser.

NPM Package Explorer

Search the npm registry, inspect bundle sizes from Bundlephobia, and copy CDN script tags and import URLs.

Tool Chainer

Build multi-step text pipelines with encoding, hashing, formatting, and find-replace processors entirely in your browser.

Avro Schema Evolution Checker

Diff two Apache Avro record schemas for added, removed, and changed fields with reader-writer compatibility hints in the browser.

Avro Schema Validator

Check Avro .avsc JSON structure, summarize records, enums, unions, and field types with instant browser-side validation.