PDFのロックを解除する
Remove a password or owner restriction from a PDF so it opens freely for anyone.
Select PDF files
or drag and drop files here
Got a password-protected PDF? Unlock it here first
How to PDFのロックを解除する
1
Upload locked document
Select your password-protected PDF.
2
Provide the password
If the file requires a password to open, you must type it in to authorize the removal.
3
Download unlocked file
We strip the encryption. Download your new file that anyone can open freely without a password.
Frequently Asked Questions
Can this tool hack or bypass a password I've forgotten?▼
No. If a PDF has "user" encryption, meaning it asks for a password just to open it, you need to know that password. If it only has "owner" restrictions, like blocking printing or copying, those can often be removed without any password at all.
ここで銀行取引明細書や税務書類のロックを解除しても安全ですか?▼
Yes, decryption happens locally in your browser — the password you enter and the document itself are never sent to our servers.
所有者制限とユーザー制限の違いは何ですか?▼
User-level encryption locks the file so nobody can open it at all without the password. Owner-level restrictions let anyone open and read the file, but block specific actions like printing, editing, or copying text.
Will unlocking change anything else in my PDF?▼
いいえ、コンテンツ、書式設定、ページの順序はまったく同じままで、パスワード要件と権限ロックのみが削除されます。
必要に応じて、後で PDF を再度ロックできますか?▼
Yes, once it's unlocked you can run it through Protect PDF at any time to add a new password back onto the file.