FREE TOOLS

Password-protected ZIP creator

Create an AES-256 encrypted ZIP from selected files using a password you supply.

Files

ZIP

Browser only

Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.

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How to use this tool

Choose up to 100 files totaling 20 MiB.
Enter the password. Creation requires at least 12 characters.
Process and download the ZIP. Keep the password separately; Reset clears working inputs.

Protect two local documents in an AES-256 ZIP that opens with the supplied password in an AES-compatible archive reader.

Creation: 100 files, 16 MiB each, 20 MiB total and 24 MiB output. Unlocking: 20 MiB input, 1,000 entries, 16 MiB per file and 64 MiB expanded/output. Processing uses a cancellable local worker with a 120-second deadline.
Creation uses standard WinZip AES-256 AE-2 with authenticated contents. Filenames and sizes remain visible, and a strong unique password is important. Some built-in archive readers do not support AES ZIP.
Unlocking accepts WinZip AES and legacy ZipCrypto stored/DEFLATE entries. ZIP64, split/self-extracting archives, symbolic links, special files and unsafe or conflicting paths are rejected. Nested archives are not recursively expanded.
Passwords are supplied by you, never guessed or recovered. A wrong password, corrupt content or failed size/authentication check yields no partial output. Passwords are masked and excluded from generated files and reports.
Unlock output is unencrypted. Original timestamps and empty directory entries are omitted; supported regular-file names and contents are retained. Legacy ZipCrypto provides weak protection.

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