Extract .7z Files Online
Open a 7-Zip archive — including AES-256 password-protected .7z files — look through it and save what you need, all in your browser. Nothing to install.
How to extract a 7z file online (free)
- Drop your
.7zfile onto the box above, or click to choose it. Type the password if the archive asks for one. - Look through the folder tree, use the search box, and click a file to preview it.
- Download a single file, a ticked selection, or the whole archive as
.zip,.7z,.tar.gzor.tar. Chrome and Edge can also save everything to a folder you pick.
Open 7z archives without installing anything
The .7z format compresses better than ZIP, but many systems have no built-in way to open it, and on a work laptop or a Chromebook you may not be able to install one. This page runs the real thing: 7-Zip itself, compiled to WebAssembly. Archives using LZMA, LZMA2, PPMd or BZip2 open here, whether solid or not, as do multi-volume sets (.7z.001, .7z.002…) when you drop all the volumes together.
AES-256 password-protected 7z files
7-Zip encrypts archives with AES-256. Drop an encrypted .7z here and the tool asks for the password, then decrypts in your browser. Archives with encrypted file names, which show nothing at all until unlocked, work too. A wrong password is reported clearly.
Nothing — not the archive, not the password — is sent to a server, which is the whole point of an encrypted archive.
Solid archives and large files
Most 7z archives are solid: the files are compressed together as one block. To reach a file, everything stored before it in the block has to be decompressed first, so pulling a single file out of a large solid archive can take a while. The archive is read from disk in pieces and extracted data is written to your browser’s temporary storage, not held in memory; a 4.5 GB file has been extracted from a 7z this way.
What is not supported
Some modified 7-Zip builds write 7z files with Zstandard, Brotli or LZ4 compression. Those codecs are not part of the standard 7z format and are not supported here; the tool says so when it meets one. If you need the files in a more widely readable format afterwards, the 7z to ZIP converter repacks them.
Frequently asked questions
How do I open a 7z file without installing 7-Zip?
Drop the .7z file on this page. It is read directly in your browser by 7-Zip compiled to WebAssembly, so there is no software to install.
Can I open a 7z file on a Mac?
Yes. The tool runs in the browser, so it does not depend on the operating system: Mac, Windows, Linux or a Chromebook. It was developed and tested in Chrome; use a current desktop browser.
Can it open password-protected 7z archives?
Yes. 7z archives encrypted with AES-256, with or without encrypted file names, prompt for the password. Decryption runs in your browser and the password never leaves your device. A lost password cannot be recovered.
Are my 7z files uploaded to a server?
No. Extraction happens locally in your browser tab using WebAssembly. Your files never touch the network.
Which compression methods are supported?
LZMA and LZMA2, the methods 7-Zip uses by default, plus PPMd and BZip2. The non-standard Zstandard, Brotli and LZ4 codecs written by some modified 7-Zip builds are not supported.
Is there a size limit?
There is no fixed cap. Extracted data goes to your browser’s temporary storage on disk, so the practical limit is the free space there, normally a share of your free disk space. Where a browser offers no such storage, as in some private-browsing modes, memory is used instead and large archives may fail.