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Schema Markup Generator Guide: JSON-LD Structured Data for SEO
Learn JSON-LD schema markup, rich results eligibility, and GEO-friendly structured data. Build valid Schema.org tags with a free generator.
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Online Grocery List: How to Build and Organize Your Shopping List
Make a categorized grocery list online, check off items as you shop, and track progress. Free browser tool with local save. No app required.
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Wheel of Names Online: How to Run a Fair Random Name Picker
Paste names, spin the wheel, and pick winners for class, raffles, and meetings. Fair random name picker with themes, sound, and remove-winner mode.
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Twitter Profile Picture Downloader: How to Save X Avatars in HD
Download Twitter and X profile pictures in the best public resolution. No login. Learn avatar sizes, CDN URLs, privacy, and legal use.
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Unicode Fractions: How to Type ½, ¼, and Custom Fractions
Type proper fractions like ½ and ¼ in documents and web pages. Learn vulgar fractions, fraction slash U+2044, and copy Unicode fractions instantly.
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Cursed Text and Zalgo Text: What They Are and How to Generate
Learn how cursed and Zalgo text work with Unicode combining marks. Generate glitch text in your browser and copy it to Discord, X, and more.
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Regex Tester Online: How to Test and Debug Regular Expressions
Test regular expressions in your browser with live highlights, capture groups, and flags. Learn regex flavors, flags, and debugging workflows.
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Markdown Editor Online: Write and Preview Markdown in Browser
Write Markdown with live preview in your browser. GFM tables, code blocks, and export. No install. Free online markdown editor.
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JSON to Excel: How to Convert JSON Arrays to Spreadsheets
Turn JSON API responses into Excel spreadsheets for analysis. Learn flat vs nested JSON, limits, and convert JSON to XLSX free in your browser.
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HEIC to PNG: How to Convert iPhone Photos for Web Upload
Convert HEIC iPhone photos to PNG for WordPress, forms, and design tools. Free browser converter with batch support and local processing.
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Percentage Calculator: Formulas, Examples, and Online Tool
Calculate percentages, increases, decreases, and differences. Formulas explained with examples and a free online percentage calculator.
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10 Free Developer Tools Every Programmer Should Bookmark
Bookmark these 10 free browser developer tools for JSON, JWT, Base64, encryption, and more. No install, client-side privacy on OnlineMiniTools.
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