Kreemhunt Submit a Tool

CSS Minifier

CSS Minifier removes comments, whitespace, and unnecessary characters from CSS to reduce file size, entirely in your browser.

No upload Instant Free No sign-up

How to minify CSS

  1. 1 Paste your CSS into the input box.
  2. 2 Click "Minify" — comments, whitespace, and unnecessary characters are stripped.
  3. 3 Copy the minified output.

Frequently Asked Questions

Does this upload my CSS anywhere?
No — minification happens entirely in your browser.
Will this break my CSS?
It performs safe, conservative whitespace and comment removal rather than aggressive restructuring, so it shouldn't change behavior — always test minified output before deploying.

More Developer Tools

JSON Formatter & ValidatorFormat, validate, and beautify JSON with syntax error detection.Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text.URL Encoder & DecoderEncode or decode URL components and query strings.UUID GeneratorGenerate random UUID v4 identifiers, one or in bulk.Lorem Ipsum GeneratorGenerate placeholder Lorem Ipsum text by paragraphs, words, or sentences.Duplicate Line RemoverRemove duplicate lines from a list, keeping only unique entries.Remove Empty LinesStrip blank lines out of a block of text.Line SorterSort lines of text alphabetically, numerically, or by length.Whitespace TrimmerRemove leading, trailing, or extra inner whitespace from text.Slug GeneratorConvert any text into a clean, URL-safe slug.HTML Encoder & DecoderEscape text to safe HTML entities, or decode HTML entities back to text.JSON to CSV ConverterConvert a JSON array of objects into a downloadable CSV file.CSV to JSON ConverterConvert CSV data into a JSON array of objects.Hash Generator (SHA-1, SHA-256, SHA-512)Generate SHA-1, SHA-256, and SHA-512 hashes of any text.
Browse all Developer Tools →