Online Editor Syntax Highlighting

A powerful online code editor with real-time syntax highlighting for multiple programming languages.

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About This Tool

This online editor provides real-time syntax highlighting for over 50 programming languages including JavaScript, Python, HTML, CSS, Java, C++, PHP, and more. Built with Monaco Editor (the same engine powering VS Code), it offers a professional coding experience with customizable themes, language detection, and easy copy/download functionality. Perfect for quick code editing, testing snippets, or learning programming syntax.

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How to Use

Select your programming language from the dropdown menu
Choose a theme (Light or Dark)
Type or paste your code into the editor
Use the Copy button to copy the code to clipboard
Use the Download button to save the code as a file
Syntax highlighting updates in real-time as you type

Frequently Asked Questions

Find Quick Answers

What programming languages are supported?

The editor supports over 50 languages including JavaScript, TypeScript, Python, Java, C++, C#, PHP, Ruby, Go, Rust, HTML, CSS, SQL, JSON, XML, and many more.

Can I use this editor without an internet connection?

No, this is a web-based tool that requires an internet connection to load the Monaco Editor library and syntax highlighting engine.

Is my code stored on your servers?

No, all code editing happens locally in your browser. We don't store or transmit your code to any servers.

Can I change the editor font size?

Yes, you can use Ctrl+Mouse Wheel (or Cmd+Mouse Wheel on Mac) to zoom in/out and adjust the font size.

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