Open & Recompress ZIP

Open ZIP archives in your browser, view the contents and repack them at a different compression level.

Drop files or folders here

Choose a .zip file — ZIP64 archives over 4 GB work too.

How to open a ZIP file online

1
Drop a .zip file into the drop area or click to choose one.
2
Browse and search the list of files inside the archive.
3
Download any single file, or select files to recompress.
4
To recompress, choose a level and build a new, smaller ZIP — the original stays untouched.

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.

Can I extract a ZIP without installing software?

Yes. Open the archive here and download the files you need directly in your browser.

Does it open ZIP64 archives over 4 GB?

Yes. ZIP64 archives are read the same way; files are extracted in chunks to the browser's private disk area.

Can it open password-protected ZIP files?

Not yet. Encrypted files are shown with a lock and skipped when recompressing.

Is it safe to open an unknown ZIP?

File paths are cleaned so nothing can point outside the archive, and archives with extreme compression ratios (possible zip bombs) show a warning.

Why do some file names look wrong?

Old archive tools sometimes store names in local encodings. YrnCompress detects UTF-8 and common Turkish and DOS encodings automatically.

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.