Beautify or minify JSON, CSS, HTML and JavaScript — processed on your device, no libraries, no upload.
🔒 Files never leave your browser. Nothing is uploaded.
JSON uses a strict parser. CSS, HTML and JS use conservative formatters that preserve strings, comments and your code — they re-indent and normalize whitespace rather than rewriting syntax.
Code Formatter is a free, private text & code tool that runs entirely in your web browser. Beautify or minify JSON, CSS, HTML & JavaScript locally. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for format, beautify, minify, prettify. Like every HeroTool by Digital Heroes, Code Formatter is 100% free with no limits.
Yes — Code Formatter is completely free for everyone. No sign-up, no account and no usage limits.
No. Code Formatter runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.
Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.
No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.
Beautify or minify JSON, CSS, HTML & JavaScript locally.