Oxford PDF

パスワードで PDF のロックを解除

正しい PDF パスワードを使って暗号化されていないコピーを作成します。

無料で利用アカウント不要ファイルはブラウザー内で処理

A PDF and its known password

Choose a protected PDF, then enter its correct opening or permissions password.

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How to unlock a PDF

  1. PDFを選択

    Choose the protected PDF.

  2. Use its password

    Enter its known PDF password and prepare an unlocked copy.

  3. Review the copy

    Review the copy and download the PDF that opens without a password.

保存する前に

  • Use a valid PDF up to 100 MB and 500 pages. The correct password is required; this tool does not recover forgotten passwords.
  • The document object graph and decoded contents are checked after saving. Digitally signed, repaired, XFA, scripted and unsupported files are refused.
  • Passwords are used in browser memory for this operation and are cleared afterwards. Original files stay unchanged.

Questions about unlocking PDFs

Can this recover a password I forgot?

No. Supply the correct opening password or permissions password.

Will my form fields and notes remain?

Supported fields, annotations, page geometry and document content are retained and verified. Files that fail preservation checks are refused.

What if my PDF has no password?

The tool reports that it is already unprotected and can provide a verified copy with the original bytes.