Security
Protect PDF
Set an open password before you share.
Tools are free. File stays in this tab.
Add a file from this device.
How it works
Choose a file, type an open password, press Process. The download is {stem}-protected.pdf. After lock, the bytes must contain an encryption dictionary or nothing downloads. AES-128 is refused. AES-256 only. A file that already has Encrypt must be decrypted first. The job runs in this tab. The file is not posted to PactPDF.
On this device
The password stays in this browser. PactPDF does not keep it. The file is not posted. Close the tab and the job is gone. There is no locker.
When to use
Offer letters and ID packs before you send them. A clerk who needs the reader to type a password. HR packs that leave the phone. Tender annexes that should not open without the password you set.
When not to use
A print restriction without an open password. That is not a secret. Use Unlock for flags. Use Decrypt only if you already know the open password. Protect does not guess passwords. No cracking.
Related tools
FAQ
- Do you keep the password?
- No. It stays in this browser. PactPDF does not store customer passwords or files.
- Is this the same as Password protect PDF?
- Yes. That URL is the same job. AES-256 open password.
- Is Protect free?
- Yes. Protect is free. File stays in this tab. Download is the save.
- Can this crack a password?
- No. A file that already has an open password must be decrypted first. Unlock clears permission flags only. We do not guess passwords.
- What happens after Process?
- The protected file downloads as {stem}-protected.pdf. Open it in another viewer to confirm the password prompt.