Open 7Z files online
7z and RAR are high-ratio archive formats. The viewer lists what’s inside and lets you open any file or download it individually — powered by libarchive.js (WebAssembly), entirely in your browser.
Drop a 7Z file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
What is a 7Z file?
7z and RAR are high-ratio archive formats. The viewer lists what’s inside and lets you open any file or download it individually — powered by libarchive.js (WebAssembly), entirely in your browser. The .7Z extension identifies a 7-Zip / RAR archive file, which is served with the application/x-7z-compressed media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open 7-Zip / RAR files in desktop apps such as 7-Zip, WinRAR, The Unarchiver — but here all you need is a web browser.
Quick facts
| Format | 7-Zip / RAR — 7-Zip / RAR archive |
|---|---|
| File extensions | .7z .rar |
| MIME type | application/x-7z-compressed |
| Developer | Igor Pavlov / RARLAB |
| Category | Archives |
| Also opens in | 7-Zip, WinRAR, The Unarchiver |
How to open a 7Z file online
- Click Choose file above, or drag your 7Z file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render 7Z in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .7Z file?
A .7Z file is a 7-Zip / RAR archive, identified by the application/x-7z-compressed media type. You can open and read it instantly in the viewer above without installing anything.
What programs open 7Z files?
On the desktop, 7Z files typically open in 7-Zip, WinRAR, The Unarchiver. Online, this page opens them in any modern browser — nothing to download.
Is it safe to open my 7Z file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a 7Z file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.