Code Highlighter
Input Code
Highlighted Output
Frequently Asked Questions
What is code highlighting used for?
Code highlighting displays different parts of code in different colors and font styles, making code easier to read and understand. It is especially useful for displaying code snippets in blogs, documentation, and tutorials.
Which programming languages are supported?
This tool supports 30+ programming languages, including JavaScript, Python, Java, C, C++, Go, Rust, PHP, Ruby, SQL, HTML, CSS, JSON, YAML, Markdown, Shell, and other mainstream languages.
How do I export highlighted code?
Click the 'Export HTML' button to download an HTML file with complete styling for the highlighted code, which can be used directly in web pages. Click 'Copy HTML' to copy the code snippet and paste it into Word, blog editors, etc.
Is my data uploaded to a server?
No. All processing is done locally in your browser. Your code is never uploaded to any server, ensuring data security.
What is this tool
Renders plain code into syntax-highlighted output you can paste into blogs, docs, Word, or export as an image.
How to use
- 1. Paste code or upload a file
- 2. Pick language and theme (line numbers optional)
- 3. Copy the result or export HTML
Example
Input `const a = 1;` → output a highlighted HTML block with line numbers
FAQ
Can I use the highlighted code commercially?
Yes, the generated HTML or image is yours to use without extra licensing; copy the theme styles along with it when publishing.
Will a few thousand lines lag?
Rendering happens in the browser, and a few thousand lines stay smooth; above roughly 10k lines, highlight in parts.