100% in your browser · No uploads
Compress your files. Without them leaving your device.
YrnCompress processes archives, documents, images and audio right in your browser. Streaming and ZIP64 support for gigabytes of data.
Start creating a ZIPYrnCompress is a free online file compressor that works entirely in your browser. Zip large files and folders, open and recompress existing ZIP archives, and soon compress PDFs, JPG, PNG, WebP and AVIF images and audio — without uploading anything.
Zero uploads
Your files are never sent to any server. It even works offline.
Processed on your device
Compression runs in a background worker thread inside your browser.
RAM friendly
Large files are read in chunks and written to the browser's private disk, never fully loaded into memory.
Archive
Work with ZIP, ZIP64, 7Z and RAR.
Frequently asked questions
Is YrnCompress free?
Yes. All tools are free to use and need no account.
Are my files uploaded anywhere?
No. Every tool runs in your browser, so your files stay on your device.
How large can my files be?
Archives over 4 GB are supported with ZIP64. The practical limit is your browser's free storage.
Does it work on phones?
Yes, on modern mobile browsers. Very large jobs are faster on a computer; keep the screen on while working.