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ConvertBox

Unlock a password-protected PDF

Remove the password from a PDF you own. Decryption happens in your browser, so your file and password are never uploaded.

🔓

Select a PDF file

Drop a password-protected PDF here or click to choose.

Max file size: 50MB

or drag and drop · press Enter to browse

How to Use

  1. Select the password-protected PDF.
  2. Enter the current password.
  3. Click Unlock PDF — an unencrypted copy will be downloaded.
  4. Use the unlocked file freely (only do this on files you own).
  5. Verify the output file in your device's download folder.
  6. You can adjust settings and process new files immediately without any restrictions.

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

Only use this tool on PDFs you legally own or are authorized to modify.
Pages are re-rendered at 2x scale for high fidelity. Text becomes part of the page image rather than selectable text. If you need selectable text, run PDF OCR afterward.
No. You must know the open password. Recovery of unknown passwords is not supported.
No. All operations are processed entirely inside your browser's local sandbox using client-side APIs (like WebAssembly, pdf-lib, or HTML5 Canvas). Your files and data never leave your device.
The tool is completely free with no usage limits. However, since processing occurs in your browser's memory, we recommend keeping file sizes under 50MB (especially for heavy files like PDFs or videos) to ensure stability.
No. All tools on ConvertBox are 100% free. We do not insert watermarks, limit features, or require any registration or payment.
Yes. Once the page and its local library dependencies are loaded in your browser, the conversion logic runs completely offline without needing an active internet connection.

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