Css Clamp Builder
Analyze CSS locally with explicit inputs, bounded results and a complete downloadable report.
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Process bounded CSS locally. Reports preserve complete input and assumptions. Paste CSS rules, including their selectors. Up to 200,000 characters. Review the settings before running.
Your result
How to use Css Clamp Builder
- Paste CSS or JSON using the example.
- Review the bounded report and assumptions.
- Download complete JSON or CSV.
Useful next steps
Use the documented input
Derive bounded fluid sizes from selected viewport endpoints