Zip and unzip
Pack files into a ZIP or open one. Free, no account, files stay in your browser.
Questions
Can it open a password ZIP?
No. Encrypted ZIP, RAR and 7z are not supported.
Are big files OK?
Files are handled in the device memory. A few hundred MB usually works; very large files can be slow on a phone.
Do files go to a server?
No. Everything runs in this browser.