Strip whitespace and comments from JS, CSS and HTML — entirely in your browser.
Minify JavaScript, CSS and HTML with pure in-browser implementations — no external libraries, no uploads. The JS minifier is string-aware (handles template literals, quoted strings and escape sequences) and preserves licence comments. The CSS minifier removes block comments and collapses whitespace around punctuation. The HTML minifier removes non-conditional HTML comments and whitespace between tags.
No. All three minifiers are pure JavaScript running in your browser. Nothing leaves your device.
It handles the syntax-level whitespace and comment removal that is common to JS and TS. Type annotations are left as-is; use a proper TS compiler for full transpilation.
Yes — JS blocks starting with /*! are kept. Standard block comments (/* … */) and line comments (//) are removed.
Related: Code Formatter · SCSS Compiler
Keywords: code minifier, minify JS CSS HTML, browser minifier, no upload minifier