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Developer tools
CSS Formatter
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About this tool
About this tool
CSS Formatter organizes stylesheet rules by adding consistent indentation, line breaks, and spacing around selectors and declarations in your browser. Formatted CSS remains functionally identical but more readable for maintenance.
Beautify CSS rules and declarations for easier review. Use the full-width workspace to format content while reviewing syntax, encodings, protocol fields, and implementation details. The tool accepts plain text, provides focused options, and creates CSS output that you can inspect, copy, download, or save as a local draft.
Built for daily work
How to use this tool
How to use this tool
Configure the operation
Review the available processing controls. The selected controls determine how the CSS Formatter interprets the source and builds the result.
Run the tool
Start the CSS Formatter and review the result, visual preview, and technical report. Correct any reported issue and run the tool again when necessary.
Export or continue the workflow
Copy or download the CSS result, save a browser-local draft, or open a related tool for the next conversion, validation, or cleanup step.
Key features
Key features
Rule and declaration indentation
Selectors, nested at-rules, and property lists are indented to show the cascade structure clearly.
Preserves CSS specificity and order
Formatting does not reorder, merge, or remove rules. Selectors and declarations stay in their original sequence.
Copy and download the formatted stylesheet
Copy or download the result for use in a build pipeline or code review.
No vendor prefixing or validation
The tool indents and spaces existing CSS. It does not add missing vendor prefixes or check property support.
Practical use cases
Practical use cases
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
Input formatsplain text
Output formatsCSS
ProcessingLocal browser processing
Task controlsthe available processing controls
Maximum local file25 MB per supported file
Workspace featuresFocus mode, examples, copy, download, local drafts, and result reports
Limitations and important notes
Limitations and important notes
- Formatting improves readability but does not guarantee semantic correctness.
- Large or deeply structured input depends on available browser memory and may process more slowly on mobile devices.
- The tool implements practical browser-based processing and may not reproduce every feature of specialist desktop software or every vendor-specific extension.
- Keep the original source and review generated output before production, security-sensitive, financial, legal, or safety-critical use.
Frequently asked questions
Frequently asked questions
It organizes CSS by adding consistent indentation, line breaks, and spacing around selectors and declarations locally in your browser.
No. It preserves selectors and declarations and only adjusts whitespace and formatting for readability.
The tool accepts CSS text and .css or .txt files up to 25 MB processed locally.
No. Use CSS Minifier for compression. This tool focuses on pretty-printed, readable output.
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