Add password protection and encryption to your PDF directly in your browser — your file never leaves your device. Set an open password to restrict who can view the document, and optionally control permissions like printing and copying. Uses pdf-lib for fast, private, client-side encryption.
No. Password protection is applied entirely in your browser using pdf-lib. Your PDF never leaves your device.
Yes. You can set an owner password and restrict specific permissions such as printing, copying text, or modifying the document.
The tool applies 128-bit RC4 encryption, which is standard for password-protected PDFs and supported by all major PDF readers.
Only if you set an open (user) password. If you set only an owner password, the document opens freely but respects the permission restrictions you chose.
PDFs up to 10 MB can be protected in-browser.
Add passwords and encryption to secure your PDF files.
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