Store files in folders, compress and extract .zip archives, and convert between formats — all in the browser, on your own device. It is a working file space rather than cloud storage: nothing is uploaded, and each workspace keeps its own files separate.
How to zip and unzip files in your browser
Drop files into a folder, or make folders to organise what is there.
Select several files and compress them into a .zip.
Drop a .zip in and extract it to read what is inside.
Convert a file to another format without leaving the page.
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Questions
Is this cloud storage?
No. Files live in your browser's storage on this device. There is no server holding a copy, which is also why clearing site data removes them.
Can it open .zip archives?
Yes — it both creates and extracts .zip archives, entirely on your device, so a large archive does not have to be uploaded and downloaded again to be opened.