Lock your PDF so only people with the password can open it — before you email or share it.
No daily limit No watermark No sign-up Files never uploaded
Your PDF is locked
How to put a password on a PDF
1Choose the PDFAny PDF from your phone or computer.
2Set a passwordType it twice so there are no typing mistakes.
3DownloadShare the locked PDF; send the password separately.
Questions people ask
How strong is the protection?
The PDF is locked with AES-256 encryption, the strongest standard PDF readers support. Use a password of at least 8 characters that is hard to guess.
Will it open on phones and in Adobe Reader?
Yes. Any normal PDF reader — Chrome, Adobe Reader, phone file viewers — asks for the password and then opens it.
What if I forget the password?
Nobody can open the file without it, including us. Keep the original unlocked file or note the password somewhere safe.
Is my PDF uploaded?
No. The PDF is locked inside your browser and never leaves your device.