Open a .7z archive
RAR isn't the only proprietary container out there. 7-Zip's own format (.7z) usually compresses tighter than both ZIP and RAR — which is why open-source releases, ROM bundles, and large dataset distributions favor it. Drop one here to read it without installing 7-Zip.
Drop your .7z here
or click to browse — .7z, including AES-encrypted & header-encrypted
01.About the 7Z format
7Z is the native format of 7-Zip, the open-source archiver from Igor Pavlov. It uses LZMA/LZMA2 compression, which tends to squeeze tighter than DEFLATE (ZIP) or even RAR. The trade-off has historically been that not every operating system ships a 7Z extractor by default — Windows didn't until late 2023, and macOS still doesn't.
What's supported here
- LZMA / LZMA2 — the default for any modern 7z.
- AES-256 on the data stream — the standard encryption mode.
- Header encryption — even the file list is locked, so you'll see “password required to list contents” until you provide it.
- Solid archives — multiple files share a compression dictionary. Decompression is done on demand.
- BCJ / BCJ2 / Delta filters — the optimizers 7-Zip uses for x86, ARM, and multimedia content.
Privacy
The .7z file and any password you enter are processed entirely on your device. Nothing uploads.