Extract 7z files online without installing 7-Zip: drop the .7z archive and its folders and files are listed in your browser, ready to save one at a time or all together. 7z is the format 7-Zip creates, common for large downloads because it compresses tightly, and many computers still need an extra app to open it. The reader here is libarchive built for WebAssembly, a download of roughly 1 MB fetched once, and it runs on your own device, so the archive is never uploaded. Tick individual files or whole folders to take only the part of a big archive you actually need.
How it works
- Drop the .7z file. It is identified by its signature rather than its name, and the contents are listed with each file’s size.
- Browse the tree, expand or collapse folders, Peek at images and text, and tick the parts you need.
- Save single files, or press Extract → ZIP to download the ticked files, or the whole archive, as one ZIP.
Questions
- How do I open a 7z file without installing 7-Zip?
- Drop it on this page. The archive is listed in your browser with each file’s size, so you can see what a large download holds before giving it any disk space, and Save pulls out any single file. Taking everything through Extract all → ZIP is capped at 2 GiB of uncompressed output; past that, save the parts you need one by one.
- Can I extract only some files from a 7z archive?
- Yes. Tick individual files, or a folder to take everything under it, and the button changes to Extract 3 selected → ZIP (or however many you picked), with the size of the selection shown. A folder with only some files ticked shows a partial tick. Leave nothing ticked to extract the whole archive.
- What other archive formats does it open?
- ZIP, RAR (including RAR5), TAR and gzip, which covers .tar.gz and .tgz, are recognised by their signatures. A file that matches none of them is still tried with libarchive, which also reads formats such as ISO, cpio and CAB, before the page says it can’t be read. The detected format is shown on the bar.
- Does my file get uploaded?
- No. The models and all processing run inside your browser on your own device. You can verify this yourself: open your browser’s DevTools, watch the Network tab, and process a file: there are no uploads. After the first visit most tools also work fully offline.
- Are password-protected archives supported?
- Encrypted ZIP entries and password-protected RAR/7z archives are detected and reported honestly. A password prompt is on the roadmap, but nothing is silently skipped today.
- Why RAR and 7z but ZIP output only?
- Reading RAR and 7z uses the open libarchive project. Writing RAR is proprietary to WinRAR, and 7z output has little reason to exist here, since ZIP opens on every device without extra software.