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Password‑protected ZIP

Encrypt a file into a password‑protected ZIP (AES‑256) locally in your browser.

Min 12 characters
Ready

Tip: store your password safely. If you forget it, the file cannot be recovered.

Notes

  • Creates a ZIP with AES‑256 encryption (WinZip/7‑Zip compatible). No data leaves your device.
  • Some older unzip tools may not support AES; use 7‑Zip, macOS Archive Utility (newer), or Windows 10+.
  • Large files run in your browser memory; very large inputs may fail on low‑memory devices.
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How it works

This tool packages your selected file into a ZIP archive using AES‑256 encryption with the password you provide. All processing happens locally in your browser using the @zip.js/zip.js library; no uploads are made.

Privacy & Security

No data leaves your device. The generated ZIP is created in memory and offered as a download link. Close the tab to clear temporary object URLs.

Accuracy, Limits & Tips

Very large files may exceed available browser memory. Prefer desktop tools for files larger than ~150 MB. Passwords are not recoverable if lost.

Examples

  • Zip a PDF with AES‑256 and share the password separately.
  • Create a password‑protected archive of a Word or Excel document.

Looking for broader guides and best practices? Visit the ToolsAreUs Blog for indexes (like the full tool list) and articles (e.g. secure password generation).