How to open a .7z file: without installing anything

How to open a .7z file

A .7z is a 7Z file: Better compression than ZIP. Needs 7-Zip or similar to open. 7-Zip (Windows), The Unarchiver / Keka (macOS), built-in on Linux open it. Or drop it below: it opens and converts in your browser, nothing to install.

Drop files here or click to chooseSeveral files at once are fine.

🔒 Nothing is uploaded. Check the Network tab of your browser: it stays empty.

Three ways to open it

Drop the .7z file above: it opens and converts right here, nothing to install.
For a desktop app: 7-Zip (Windows), The Unarchiver / Keka (macOS), built-in on Linux.
If it still will not open, convert it to ZIP, that is what most people are really after.

Convert a .7z

7Z → ZIP 7Z → TAR 7Z → GZ

Questions

What program opens a .7z file?

7-Zip (Windows), The Unarchiver / Keka (macOS), built-in on Linux. Or drop it here, without installing anything.

Why won't my .7z open?

Either the viewer does not know 7Z (better compression than zip. needs 7-zip or similar to open.), or the file is damaged or misnamed. Converting to ZIP fixes the first case.

Is it safe to open a .7z here?

Yes: the file is read in your browser and never leaves your device.