Code Formatter & Minifier
HTML, CSS, JS/TS, JSON and SQL - all in your browser.
About this tool
Pretty-print or minify HTML, CSS, SCSS, JavaScript, TypeScript, JSON and SQL using Prettier and sql-formatter - runs entirely in your browser.
The right tool for cleaning up a minified file you got from a bundle, reformatting code copied from a hard-to-read source, prepping snippets for a blog post, or quickly minifying CSS/JS for a one-off deployment. Nothing leaves your machine.
Features
- Prettier-powered formatting for HTML, CSS, SCSS, JS, TS, JSON
- sql-formatter for SQL (multiple dialects)
- Custom minifiers for HTML/CSS/JS
- Switch language with one click
- Configurable indent (2/4 spaces or tabs)
- Browser-only - code never uploaded
- Free and unlimited
- Preserves blank lines between paragraphs when wrapping prose
How to use it
- Pick a language.
- Paste code.
- Click Format or Minify.
- Copy the output.
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
No. Prettier and the minifiers run inside your browser via WebAssembly; nothing leaves your machine. Safe for confidential code.
A recent stable Prettier - formatting matches what `prettier --write` would produce on your machine.
Standard SQL plus PostgreSQL, MySQL, BigQuery, Snowflake and a few others - the same dialects sql-formatter supports natively.
Formatters require valid syntax - they reformat code, they don't fix bugs. If formatting fails, your input has a syntax error to fix first.
No. The text formatter respects existing indentation and won't rewrap inside code-style runs of leading whitespace. For real source code, use a language-specific formatter (Prettier, Black) instead.
Email and plain-text conventions land around 72-80 characters per line. Markdown documents are usually fine at 80-100. Prose for printed pages can go wider. The right number is whatever your downstream destination expects.