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Code Snippet Highlighter

Paste code and choose a language to get syntax-highlighted HTML.

Highlighted code will appear here.

Code Highlighter – Syntax Highlighting for Multiple Languages

Code snippets are essential for documentation, tutorials, blog posts, and developer communication. Raw code is hard to read, but syntax-highlighted code—with keywords, strings, and comments in different colors—dramatically improves readability and comprehension.

The Code Snippet Highlighter by ToolfolioHub provides instant syntax highlighting for 18+ programming languages using Prism.js, one of the most popular and reliable syntax highlighting libraries. Paste your code, select the language, and get beautifully formatted HTML ready to embed in any web page or document.

What is Syntax Highlighting?

Syntax highlighting is the practice of displaying source code with different colors and styles for different elements like keywords, strings, comments, variables, and operators. This visual distinction makes code:

  • Easier to Read: Different elements stand out, reducing cognitive load.
  • Easier to Understand: Structure and hierarchy become visually apparent.
  • More Professional: Highlighted code looks polished and professional in documentation.
  • Faster to Debug: Mistakes like unclosed strings or missing brackets are easier to spot.

Key Features & Benefits

1. Support for 18+ Languages

Our highlighter supports a wide range of popular programming languages:

  • Web Development: JavaScript, TypeScript, HTML, CSS, JSON
  • Backend Languages: Python, Java, PHP, Ruby, Go, Rust
  • Systems Programming: C, C++
  • Data & Config: SQL, YAML, XML, Markdown
  • Scripting: Bash

2. Powered by Prism.js

Uses Prism.js, a lightweight, fast, and extensible syntax highlighter:

  • Fast Performance: Processes code quickly, even for large snippets.
  • High Quality: Accurate highlighting with support for complex syntax.
  • Widely Used: Trusted by millions of websites and developers.
  • Theme Support: Output works with popular code themes.

3. Copy-Ready HTML Output

Generated HTML is ready to paste into:

  • Blog posts and documentation sites.
  • GitHub README files (via HTML blocks).
  • Email newsletters and HTML emails.
  • Any web page or content management system.

4. Dark Mode Support

The highlighted output automatically adapts to light and dark themes, ensuring readability in any viewing environment.

How to Use the Code Highlighter

  1. Select Language: Choose the programming language from the dropdown menu.
  2. Paste Code: Paste your code snippet into the textarea.
  3. Highlight: Click "Highlight Code" to generate syntax-highlighted HTML.
  4. Copy HTML: Click "Copy HTML" to copy the highlighted code HTML to your clipboard.
  5. Paste Anywhere: Paste the HTML into your blog, documentation, or web page.

Typical Use-Cases & Audience

Technical Writers & Bloggers

Use this tool to:

  • Format code snippets in blog posts and articles.
  • Create professional-looking documentation.
  • Share code examples in tutorials and guides.

Developers

Developers use this tool for:

  • Formatting code in GitHub README files.
  • Creating internal documentation.
  • Sharing code snippets in team communications.

Tips & Best Practices

  • Choose the Right Language: Selecting the correct language ensures accurate highlighting.
  • Keep Snippets Focused: Highlight only the relevant code to maintain clarity.
  • Test the Output: Paste the HTML into your target platform to verify appearance.

Get Started Now

Paste your code above, select the language, and generate syntax-highlighted HTML instantly.

Conclusion

The Code Snippet Highlighter makes it easy to create professional, readable code examples for any purpose. With support for 18+ languages and Prism.js-powered highlighting, it's an essential tool for developers, writers, and anyone sharing code.