Organise

Open a ZIP file

Look inside before you take anything.

On this device

What is inside

Reading the archive's index does not extract anything. Nothing is written until you ask for it.

    Opened on this device · never transmitted

    What this tool does, exactly

    The listing comes first: every file in the archive, with its size, before a single byte is unpacked. Then take all of them, or take the one you actually wanted.

    The listing first
    A ZIP keeps an index at its end, so the contents can be read without unpacking the contents. That listing is what you see first — every name and every size — which is the difference between opening an archive and being handed forty files by surprise.
    One file or all of them
    Every entry has its own button. Extracting one file decompresses one file, which matters on a phone facing a large archive: you are not made to unpack two hundred megabytes to reach a two-kilobyte receipt.
    What it will not open
    RAR, 7z, tar.gz, and any ZIP with a password. The first three need different decoders, and this tool intentionally does not implement encrypted ZIP. Each unsupported archive is named plainly rather than reported as a corrupt file.
    Paths are kept, and kept safe
    Folder structure inside the archive is preserved in the names you see. Entries that try to climb out of their own folder — the classic “zip slip”, a path with .. in it — are refused and listed as refused, because a browser download that lands somewhere unexpected is a real attack rather than a curiosity.

    About this tool

    Do I have to extract the whole archive?

    No, and that is the reason the listing comes first. Every file inside has its own extract button, so you can take the single document you came for and leave the other hundred and ninety-nine compressed. Extracting everything is one button as well, when that is what you want.

    It says my archive is encrypted. Can I still open it?

    Not here. This tool does not attempt encrypted ZIP. Open the archive with software that supports its encryption and the original password. If that password is lost, recovery options depend on the archive and its creator; Steady PDF receives no copy and cannot reset it.

    Can it open RAR or 7z files?

    No. Despite the shared idea, they are entirely different formats needing entirely separate decoders, each well over a megabyte, downloaded by everybody to serve a minority. The tool says which format it found instead of reporting your file as broken.

    Is the archive uploaded to be read?

    No. Both the index and the decompression are read in this tab. Archives are one of the things people most often open without knowing what is in them, and doing that on a stranger's server means handing over the contents before you have seen them yourself.

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