Code Highlighter

The Code Highlighter is an online tool that provides syntax highlighting for code in multiple programming languages. Syntax highlighting makes code more readable by colorizing different elements like keywords, strings, comments, and variables according to their meaning in the programming language.

What is this tool for?

Our Code Highlighter tool is perfect for developers, students, educators, and anyone who works with code. Whether you're reviewing code, preparing documentation, sharing code snippets, or learning a new programming language, syntax highlighting makes code easier to read and understand.

Common use cases include:

• Highlighting code snippets for documentation or blog posts
• Reviewing and analyzing code from different languages
• Learning programming languages with visual syntax cues
• Preparing code for presentations or tutorials
• Converting code between different formats
• Quick code formatting and visualization

How to Use the Tool

1. Select Language: Choose the programming language from the dropdown menu. This determines how the code will be highlighted.
2. Enter Code: Paste or type your code into the input panel on the left. You can also upload a code file using the file upload button.
3. View Highlighted Code: The code will automatically be highlighted in the right panel with syntax coloring based on the selected language.
4. Copy or Download: Use the copy button to copy the highlighted code, or download it as a file.
5. Load Sample: Click the "Sample" button to load example code for the selected language.

Supported Programming Languages

The tool supports syntax highlighting for a wide variety of programming languages including:

• Web Technologies: JavaScript, TypeScript, HTML, CSS, SCSS, Sass, Less, JSON, XML
• General Purpose: Python, Java, C, C++, C#, Go, Rust, Ruby, PHP
• Scripting: Shell/Bash, PowerShell, Perl, Lua
• Mobile: Swift, Kotlin
• Data Formats: JSON, YAML, XML, INI
• Other: SQL, Markdown, Dockerfile, and more

Understanding Syntax Highlighting

Syntax highlighting (also called code highlighting) is a feature that displays source code in different colors and fonts according to the category of terms. This makes code easier to read and understand by visually distinguishing:

• Keywords: Reserved words in the language (e.g., if, function, class)
• Strings: Text literals enclosed in quotes
• Comments: Explanatory text that doesn't execute
• Variables: Identifiers for data storage
• Functions: Named blocks of code
• Numbers: Numeric literals
• Operators: Symbols for operations (+, -, *, /, etc.)

Example

Here's how JavaScript code looks with syntax highlighting:

function greet(name) {
    return `Hello, ${name}!`;
}

console.log(greet('World'));

With syntax highlighting, you can see that:

• function and return are keywords (typically blue)
• greet and name are function/variable names (typically black/white)
• `Hello, ${name}!` is a string (typically green)
• console.log is a method call (typically colored differently)

Features

• Multiple Languages: Support for 30+ programming languages
• Real-time Highlighting: See syntax highlighting as you type
• File Upload: Upload code files directly for highlighting
• Sample Code: Load example code for each language
• Copy & Download: Easily copy or download highlighted code
• Side-by-side View: Compare input and highlighted output
• Read-only Output: Highlighted code is read-only to preserve formatting
• Privacy-focused: All processing happens locally in your browser

Benefits of Syntax Highlighting

• Improved Readability: Makes code easier to scan and understand
• Error Detection: Helps identify syntax errors and typos
• Learning Aid: Visual cues help beginners understand code structure
• Code Review: Makes reviewing code faster and more efficient
• Documentation: Highlighted code looks professional in documentation
• Presentation: Makes code more presentable in slides and tutorials