Merge CSS Files Online - Combine Stylesheets

Free online CSS merger - concatenate stylesheets

Convert directly in your browser, with no upload waiting time, and no risk of data leaks.

Simply choose your CSS files and the tool will merge them into one CSS file for you!

Choose CSS Files to Merge

CSS Files:
(Max 10 files, 100M total.)
(More than 10 files? Big than 100M total?)

or drag & drop CSS files here

Click here to get merged CSS file

How to Merge CSS (3 Steps)

Choose your CSS files. Select two or more .css files in cascade order.
Merge. The stylesheets are concatenated so later rules keep their priority.
Download the merged CSS. Link the single file from your HTML.

Online vs App

Same job, two ways — pick the one that fits your file:

	Online	App
Free	✓	Trial
No install	✓	—
No upload	✓	✓
Large files / batch	✗	✓
GUI	✓	✓
CLI	—	✓

In short: this page is best for a quick, small file. For large files or batch jobs, use the TextMerger desktop app — it also ships a command line for scripts and scheduled runs.

What to Know About CSS

Order matters: later rules override earlier ones with the same specificity.
@import lines are kept in place, not inlined.
The merged file is not minified, so it stays readable.
The merge is local and nothing is uploaded.

Frequently Asked Questions

Will the merge break my cascade?

No, as long as you add the files in the same order your page loaded them. Later files still win.

Does it minify the CSS?

No. For a smaller file run a minifier after merging.

Are @import rules resolved?

No, they are kept as-is. Inline them first if you want a single self-contained file.

Need bigger files or batch conversion?

If this service cannot merge your data correctly, or your files are big than 100M, or more than 10 files at a time, you can merge CSS files locally by this App: Text Merger, for Windows, Linux, and macOS.

Want to stay in the browser? Subscribe (from $5/month) to raise the online limits.

If you have any question or suggestion, please contact us.