Syntax Highlighter
Highlight code syntax with various themes and support for multiple programming languages.
Highlighted code will appear here...
Supported Languages: HTML, CSS, JavaScript, TypeScript, JSX, TSX, JSON, Python, Java, C#, Ruby, Go, Rust, SQL, Bash, YAML, Markdown
Features: Syntax highlighting, multiple themes, line numbers, copy code and HTML output
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About the Syntax Highlighter
The Syntax Highlighter renders your code with colored syntax and optional line numbers, making it far easier to read and present. It applies a theme so keywords, strings, and comments stand out the way they do in an editor.
Plain, uncolored code is hard to read and looks flat in documents, blog posts, and slides. Highlighting brings structure and clarity, helping readers follow logic and making technical content look professional.
Highlighting runs in your browser, so your code never leaves your device. There’s no upload or account; paste your code and get a styled, shareable result.
How to use the Syntax Highlighter
- Paste your code into the input area.
- Choose the programming language.
- Pick a theme and toggle line numbers if desired.
- Preview the highlighted code.
- Copy or export the result for your document or page.
Common use cases
- Presenting code snippets clearly in a blog post or article.
- Adding highlighted code to documentation or slides.
- Making a shared snippet easier for others to read.
- Showcasing example code with editor-like styling.
Frequently asked questions
Which languages can it highlight?
A wide range of popular programming and markup languages are supported. Choosing the correct language ensures the coloring is accurate.
Can I add line numbers?
Yes. Line numbers can be toggled on, which is helpful when referring to specific lines in explanations.
Can I choose a color theme?
Yes. Different themes are available so you can match the look to your site, document, or preference.
Is my code uploaded anywhere?
No. Highlighting happens in your browser, so your code never leaves your device.
How do I clean up the code first?
Run it through the Code Formatter to fix indentation and style before highlighting.