What this tool does
- Four formats read with nothing installed: ZIP, TAR, TAR.GZ (and .tgz) and GZ. The contents are shown before you save anything.
- Contents are copied, not rebuilt: a file taken out of an archive comes out byte for byte identical to the one that went in. It is compared on every release, on a binary file.
- The format is recognised from the bytes, not the extension: a .tar.gz renamed .zip opens anyway, which is the ordinary fate of email attachments.
- Accented names are correct, including in older archives that predate UTF-8, “société.txt” comes out as “société.txt”, not “sociÚtÚ.txt”.
- An encrypted entry, or one compressed in a way we do not know, is listed with its reason alongside the others, rather than as a zero-byte file.
What it does not do: RAR and 7z are not read, nor are bzip2, xz or zstd: each needs a full decoder, a megabyte of code downloaded to your machine, and it is not added while the browser cannot do the job on its own. The archive is recognised and named, so you never get “unknown format”, but it does not open here. We do not ask for passwords: an encrypted archive stays closed. And everything fits in the tab's memory, so past 512 MB the archive is refused when you drop it, with the figure.
Nothing is uploaded. Cut your network connection once this page has loaded: the tool keeps working. How to check it yourself.
The other tools
- Merge PDFs: Several files, one document, in the order you decide.
- Organize pages: Reorder, rotate, delete, duplicate: the whole plan.
- Extract pages: Pick pages, take them out into a document of their own.
- Delete pages: Remove pages while looking at them; they are not left under the file you get.