About JSON Minifier
A fast, free and privacy-friendly toolkit for developers.
What is JSON Minifier?
JSON Minifier is a free online toolkit that helps you compress, format and clean up code. It includes a code minifier supporting 9 formats (JSON, JavaScript, HTML, CSS, XML, SVG, URL, SQL and Markdown) and a code cleaner that removes comments and debug logs from 11+ programming languages.
Key features
- One-click minify and beautify with live compression ratio and gzip size
- Code cleaner removes comments, console logs and debug output
- Automatic format detection and per-format content memory
- Recent history saved locally in your browser
- Light and dark themes, English and Chinese interfaces
Privacy first
All processing happens entirely in your browser. Your code is never uploaded to any server. For details, see the Privacy Policy.
Built with open web technology
The site runs on plain client-side JavaScript with open-source libraries such as CodeMirror, Terser and CSSO — no accounts, no installs, no cost.