Developer Tools
Find clear answers to common questions about CSS Prettify, including usage, output, and common issues.
Use this CSS Prettify tool to turn compact or messy CSS into a cleaner readable layout. It is useful for debugging copied styles, inspecting generated rules, cleaning one-line CSS, and making selectors and declarations easier to scan before editing or sharing.
CSS Prettify is built for development, debugging, formatting, and quick technical checks directly in the browser.
It adds indentation and line breaks to make CSS easier to read.
Yes. Both names usually mean formatting CSS into a cleaner readable layout.
No. It focuses on readability rather than full validation.
CSS Prettify makes CSS readable. CSS Minify removes whitespace to make CSS compact.
Yes. That is one of the most useful cases for this tool.
CSS Prettify is built for development, debugging, formatting, and quick technical checks directly in the browser.
Start by checking the input format, removing accidental spaces or unsupported characters, and comparing your input against the example pattern on the page.
Fix: Check whether each rule block opens and closes correctly.
Fix: Use it for readability first, then review broken syntax manually.
Fix: Review non-standard syntax carefully after formatting.
If you want to see realistic input and output patterns, open the examples page. If you want step-by-step usage guidance, open the guide page.
Open the main CSS Prettify page to test your own input and generate a live result.