Extract a ZIP on a phone, a Chromebook or a work computer where you can't install anything. Or pack several files into one ZIP to send them together.
Your file never leaves your device. Processed locally in your browser. Nothing is uploaded.
Drop the .zip file and press “Extract files”. Every file inside appears with its folder path and size; tap a file to save it. Hidden macOS files (__MACOSX, .DS_Store) are skipped.
Switch to “Create a ZIP from files”, drop the files and download the ZIP. Text and documents are compressed; photos, videos and PDFs are stored as they are because they are already compressed.
Not yet, only ZIP. Password-protected ZIP files are not supported either.
The ZIP is opened inside your browser tab and nothing is uploaded. GustKit also checks the declared size before extracting, to avoid freezing your device with a “zip bomb”.