How is the file encrypted?

AES-256 in WinZip mode, applied by the 7-Zip WebAssembly engine running in your browser. Both the file contents and the per-entry filenames are protected.

Can I recover the password if I lose it?

No. There is no recovery key, no email reset, no backdoor. The encryption is real — losing the password means losing access to the data.

Will the recipient need special software?

Most modern unzip tools (7-Zip, WinRAR, Keka, Archive Utility on macOS) handle AES-256 encrypted ZIPs. The built-in Windows Explorer extractor does not — use 7-Zip on Windows to open it.

Is the password sent over the network?

No. The password is used only inside your browser to derive the encryption key. Nothing about the password or the file ever leaves the page.

Password-Protect ZIP

Password · ZIP

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Unlock ZIPOpen a password-protected ZIP with the correct password and extract its contents.
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Password-Protect ZIP

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