Auto-formats source code across 15+ languages — JavaScript, Python, HTML, CSS, SQL, YAML — with language-aware indentation and syntax rules.
Content reviewed October 2026 · About Toolzum
Auto-detect language and format mixed code snippets — JS, CSS, HTML, JSON in one paste. Clean Stack Overflow answers before using — local processing, free, no signup.
Minify CSS by stripping whitespace, comments, and dead semicolons — smaller stylesheets instantly. Shrink a 50 KB file by 30% — local clean-css work, free, no signup.
Minify HTML by collapsing whitespace, stripping comments, and pruning optional tags. Slim landing pages for faster loads — local processing, free, no signup.
Convert between case styles, CSS preprocessors (SCSS/Less/Stylus), HTML/JSX, number bases, serialization formats (YAML/INI/TOML/JSON), and time zones. One tool for all text transformations.
Convert a single Markdown document to styled HTML or plain-text PDF with three built-in themes. One document at a time — local Marked + jsPDF, free, no signup.
HTML, CSS, JavaScript, XML, ERB (Ruby templates), LESS, and SCSS. Each language has its own formatter that understands the syntax.
Beautify adds indentation, line breaks, and spacing for readability. Minify removes all unnecessary whitespace to reduce file size for production.
Yes. Choose between 2-space, 4-space, or tab indentation when beautifying. The indentation setting applies consistently throughout the output.
Yes. Formatting changes are purely cosmetic. Your code's functionality, variable names, string values, and logic remain unchanged.
No. All beautification and minification happens locally in your browser. No code is sent to any server.
C++, Go, Kotlin, PHP and Rust share a string- and comment-aware brace-depth indent (default 2 spaces; C++ keeps # directives at column 0), while Ruby indents on keywords such as def, class, if and do...end. JSON errors report line and column computed from the parser position offset; every other language falls back to basic 2-space indent.
Code Formatter
Auto-detect language and format mixed code snippets — JS, CSS, HTML, JSON in one paste. Clean Stack Overflow answers before using — local processing, free, no signup.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics. No signup or account required.
CSS Formatter
Organizes CSS stylesheets with consistent indentation, property grouping, and selector formatting for maintainable styles.