Extract a password-protected ZIP (AES-256 or ZipCrypto) locally in your browser - no upload, with your password.
Running locally on your device ...
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
The plain extractor only opens unencrypted ZIP archives; it deliberately rejects a password-protected one. This tool opens exactly those archives - with your password it decrypts both the modern AES scheme (the WinZip AES extension, see the sibling "Create password ZIP" tool) and the older ZipCrypto method many older programs still use.
On extraction each file is checked for which scheme its creator used, and the matching key is derived from your password - for AES via PBKDF2-HMAC-SHA1 using the salt stored in the archive, followed by an HMAC-SHA1-80 authenticity check. If the password is wrong or the file was altered, the tool reports an honest error instead of broken output.
Everything runs through the zip.js library entirely locally in your browser; neither the archive nor your password ever leaves your device. Honestly framed: ZipCrypto is read only for compatibility with older archives, not recommended as a secure scheme - always create your own archives with the AES sibling tool. The folder structure inside the archive is flattened on download, same as the plain ZIP extractor.
| Input formats | ZIP |
|---|---|
| Auto-conversion | 7Z, CAB |
| Output format | ZIP |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Opens only archives that use exactly this one password - it is not a password-cracking tool and does not recover forgotten passwords. ZipCrypto archives are read only for compatibility, but are themselves considered insecure. Folder structure is flattened on download (file names only). Very large archives need memory.
No. Extraction runs entirely locally in the browser; nothing is sent.
Yes. Besides the modern AES encryption, the tool also reads the older ZipCrypto scheme - for compatibility, not because it is secure.
The tool reports an honest error; a broken or wrong file is never produced.
No, this is not a cracking tool. Without the correct password the archive stays unreadable.
With our "Create password ZIP" tool - it always uses modern AES-256 encryption.
Create password ZIP · Extract ZIP · Decrypt file · Unlock PDF · ROT13 cipher · Password generator