Developer Tools
Minify to shrink file size or beautify to make compact code readable. CSS and JavaScript are fully hand-rolled and run locally with no dependencies; HTML beautification loads the js-beautify library from a CDN — the one exception to this page's "nothing leaves your browser" tools.
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FAQ
No. This is a safe, conservative minifier — it strips comments and unnecessary whitespace only. It never renames identifiers or eliminates unused code, so behavior is guaranteed to stay identical to your original code.
No. It's a heuristic, token-based re-indenter — useful for making minified or compact code readable, but it doesn't make the deep formatting decisions of a full AST-aware formatter.
HTML beautification uses the well-established js-beautify library, loaded from a CDN, for high-quality formatting — the only external dependency on this page. HTML minification is still hand-rolled and safe: it strips comments and collapses whitespace while leaving <pre>, <textarea>, <script>, <style> content and attribute values untouched.
No. Tokenizing, minifying, and beautifying all happen client-side in your browser. The only network request this page makes is loading the js-beautify library file itself for HTML formatting — your code is never sent anywhere.