How to use
Remove CSS comments and redundant whitespace. Choose your file or enter the requested content, select options, then run the tool and download the result.
What CSS minification changes
CSS minification aims to reduce stylesheet size by removing comments and redundant whitespace. It should preserve selectors, declarations, values and the order that affects the cascade. The smallest output is not automatically the safest output: a transformation that changes a token or rule order can alter the appearance of a site.
Safe workflow for stylesheets
- Keep the original CSS file and make changes in a separate build step.
- Test pages that use media queries, custom properties, pseudo-elements and complex selectors.
- Check responsive layouts and keyboard focus styles after minification.
- Preserve license and attribution comments required by third-party code.
Minification does not remove unused CSS, guarantee faster rendering or replace cross-browser visual testing. Review the generated stylesheet before deployment.
Privacy and limitations
Processing happens locally in your browser. The page loads standard analytics and, for PDF tools, a third-party PDF library. Some advanced document features may not survive conversion. Check outputs before relying on them.
Frequently asked questions
Are my files uploaded?
No. File processing runs in your browser; the selected file is not sent to a Tolvix processing server.
Will all features be preserved?
Not always. Browser-based conversion may not preserve every annotation, form, font or advanced document feature.