Pretty-print or minify CSS instantly in your browser, with adjustable indentation.
Updated
/ 5 - Be the first to rate this tool Thanks for rating!
Verification failed - please try again.
Quick check
Please verify you're not a robot to submit your rating.
Give feedback
Tell us what you think about Format and minify CSS online.
- Runs entirely in your browser — your CSS is never sent to a server
- Pretty-print or minify without changing what the CSS does
- Free, no account required
How it works
-
1
Paste the code or data you want to format.
-
2
Choose pretty-print or minify, and set the indent width if you like.
-
3
The formatted result updates instantly.
-
4
Copy the result, or download it as a file.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
Yes, you can easily toggle between a readable multiline format and a highly compressed single-line output.
Absolutely, all specific browser prefixes (-webkit-, -moz-) are kept intact to ensure cross-browser compatibility.
No, properties remain in the exact order they were written to prevent accidental specificity issues.
The beautifier preserves them, while the minifier specifically strips them to save bytes.
Nested rules inside media queries are properly indented one level deeper than standard selectors.
From the blog
Reading a JWT Without Trusting It: Claims, Expiry, and the Signature Trap
Decoding a JWT takes a second. Verifying one is a different job entirely — and confusing the two is how auth bugs ship. Here is how to read a token safely while you debug.
Mastering Base64: What It Is, How It Works, and When Not to Use It
Base64 is everywhere in modern web development, from data URIs to authentication headers. Here is a deep dive into how it works and common pitfalls to avoid.
Demystifying JSON: How to Troubleshoot Common Parsing Errors
JSON is the backbone of web APIs, but syntax mistakes can halt your code. Here is how to identify and fix missing commas, unescaped strings, and trailing characters.
Recently viewed
Related tools
Format and beautify HTML online
Pretty-print or minify HTML instantly in your browser, with adjustable indentation.
Format and minify JavaScript online
Pretty-print or minify JavaScript instantly in your browser, correctly handling strings, template literals, regex, and comments.
Format and validate JSON online
Paste JSON to pretty-print, minify, and validate it instantly in your browser.
Format and beautify SQL online
Pretty-print or minify a SQL query instantly in your browser, with clause-based line breaks.
Format and beautify XML online
Pretty-print or minify XML instantly in your browser, with adjustable indentation.
Format and re-indent YAML online
Normalize inconsistent YAML indentation to a consistent width instantly in your browser.
Convert between CSV and JSON online
Convert CSV to JSON or JSON to CSV instantly in your browser, with full quoted-field support.
Build a curl command online
Build a shell-safe curl command from a method, URL, headers, and body, in your browser.
Delete pages from a PDF for free
Remove one or more pages from a PDF, right in your browser.
Generate an email QR code for free
Create a QR code that opens a pre-filled email with your address, subject, and message.
Convert .env to JSON and JSON to .env
Convert .env files to a JSON object and flat JSON back to .env, handling quoted values, export prefixes and comments. Runs entirely in your browser, so secrets never leave it.
Generate a calendar event QR code for free
Create a QR code that adds an event to the calendar when scanned, using the iCalendar format.