Create ZIP

Turn large files and folders into ZIP or ZIP64 archives in your browser. Files over 4 GB supported, no uploads.

Drop files or folders here

No size limit — as much as your device storage allows.

How to create a ZIP file online

1
Drag files or a whole folder into the drop area, or use the Choose files / Choose folder buttons.
2
Pick a compression level — Fastest for quick results, Smallest for the best size.
3
Click Create ZIP and follow the progress, speed and time left.
4
Download your archive and see the space you saved.

Files are processed by your own browser. Nothing is sent to a server, so confidential documents stay on your device.

Data is read in small chunks and written to the browser's private disk area, so multi-gigabyte jobs don't fill your memory.

Works in modern Chrome, Edge, Firefox and Safari on desktop and mobile. No software, account or sign-up required.

Are my files uploaded to a server?

No. YrnCompress creates the ZIP entirely inside your browser. Your files never leave your device.

Can I zip files larger than 4 GB?

Yes. ZIP64 is switched on automatically when a file or the archive goes past the 4 GB limit of the classic ZIP format.

What is ZIP64?

ZIP64 is an extension of the ZIP format that removes the 4 GB size and 65,535 file limits. Windows, macOS, 7-Zip and most modern tools can open it.

Is there a file size limit?

There is no fixed limit; the practical limit is the free storage your browser can use on your device.

Which compression level should I choose?

Balanced suits most files. Photos, videos and existing archives are already compressed, so a faster level gives almost the same size in less time.

Your files are never sent to any server. It even works offline.

Compression runs in a background worker thread inside your browser.

Large files are read in chunks and written to the browser's private disk, never fully loaded into memory.