Drop a PDF that has copy/print/edit restrictions and download an unrestricted copy you can actually use. Perfect for printing protected handouts, copying quotes from research papers and editing forms that locked themselves down.
Click to select a file or drag and drop
Your files never leave your device.
Leave empty if the PDF has no owner password.
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Drag a PDF that disallows copy / print / edit onto the upload zone, or pick it from your device. The file is processed locally; nothing is uploaded.
ZentoPDF rewrites the PDF security dictionary to clear every permission flag (copy, print, edit, fill, annotate, assemble) and re-saves the file without an owner password.
Click download to grab a copy of your PDF that you can freely copy, print, edit and annotate in any viewer — no password prompt, no greyed-out menus.
Remove password protection and restrictions from your PDF documents.
Lock your PDF by adding a password.
Set or change user permissions on a PDF. Modify passwords and access controls.
Combine multiple PDFs into one file. Preserves Bookmarks.
Reduce the file size of your PDF documents while maintaining the best possible quality.
It removes owner-password restrictions (the kind that block copy/print/edit while the document still opens). PDFs that require a user password just to open are encrypted and need our Decrypt PDF tool — supply the password there first, then come back here to remove residual permissions if needed.
You are responsible for the documents you process. Removing your own restrictions, or restrictions on documents you have legitimate access to (e.g. a textbook you bought, an internal report you authored), is generally fine. Bypassing protections on documents you do not own may violate copyright or terms of use in your jurisdiction.
No. ZentoPDF only rewrites the security/permissions layer of the PDF. The actual page content — text, images, layout, fonts — is preserved byte-for-byte, so the unlocked file looks identical to the original.
No. The entire operation runs in your browser using pdf-lib. Your restricted PDF and the unlocked output never leave your device, which makes the tool safe for confidential or copyrighted material you are entitled to access.
Yes — 100% free, no signup, no watermark on the output, no daily quota. You can unlock as many PDFs as you legitimately own, every day.