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  3. Code Syntax Highlighter
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About Code Syntax Highlighter

Paste code in any popular language and get a syntax-highlighted version ready to share, embed, or screenshot. The highlighter supports dozens of languages and multiple color themes. Whether you are preparing code for a presentation, a blog post, or documentation, the output looks polished and professional.

Getting Started

  1. 1Paste your source code into the editor
  2. 2Select the programming language from the dropdown
  3. 3Choose a color theme
  4. 4Copy the highlighted output as HTML or take a screenshot

What You Get

  • Support for 30+ programming languages
  • Multiple color themes (dark and light)
  • Line numbers with optional highlighting
  • Copy highlighted HTML for embedding in web pages
  • Automatic language detection as a fallback
  • Preserves indentation and formatting

How Syntax Highlighting Works

Syntax highlighting works by tokenizing source code according to language-specific grammar rules — identifying keywords, strings, comments, operators, and other constructs — then applying color and style to each token category. This tool uses a battle-tested highlighting engine that covers languages from JavaScript and Python to Rust, Go, SQL, and more. You can switch themes to match your preferred editor look or your site's color scheme.

Perfect For

  • Blog posts and tutorials

    Generate syntax-highlighted code snippets for technical blog posts where readability is important.

  • Presentations and slides

    Create visually appealing code slides by copying highlighted HTML or taking screenshots.

  • Documentation and wikis

    Embed properly highlighted code examples in project documentation or internal knowledge bases.

  • Code sharing in chats and emails

    Share readable, color-coded code snippets instead of hard-to-read plaintext blocks.

Frequently Asked Questions

Which languages are supported?

All major languages including JavaScript, TypeScript, Python, Java, C, C++, C#, Go, Rust, Ruby, PHP, SQL, HTML, CSS, Bash, and many more.

Can I use the highlighted output on my website?

Yes. Copy the HTML output and paste it into your site. The styles are inline, so no additional CSS is required.

Does auto-detection always pick the right language?

Auto-detection works well for common languages but can misidentify ambiguous snippets. Selecting the language manually guarantees correct highlighting.

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.