Why a PDF says it cannot be edited: permissions passwords explained

Two kinds of PDF password

A PDF can have two different passwords. The open password, also called the user password, is needed just to view the document. Without it you see nothing.

The permissions password, also called the owner password, is different. Anyone can open and read the file, but the PDF asks viewers to block certain actions: editing, printing, copying text or filling in forms. Viewers show messages like "This document is secured" or grey out the print button.

Many PDFs from banks, schools, government offices and publishing software have permission restrictions switched on by default, even when the sender never meant to stop you from filling in or signing them.

How strong are the restrictions?

An open password is real protection. With modern encryption, a document with a strong open password cannot be read without it.

Permission restrictions are much weaker. Because the file must be readable by everyone, the content is decrypted for any viewer that opens it. The restrictions are a request that well-behaved programs follow, not a lock. That is why they should never be used to protect sensitive content.

What ClearwayPDF does with restricted files

When you open a PDF that only has a permissions password, ClearwayPDF opens it like any other file, so you can fill in the form, add your signature or correct a detail. The copy you download is saved without the restrictions.

PDFs that need a password just to open are not unlocked. ClearwayPDF does not try to guess or bypass an open password.

Use it responsibly

Removing restrictions is appropriate for documents you are entitled to change: a form you need to fill in and sign, your own document whose original you lost, or a file a colleague locked by accident.

Restrictions sometimes express what the author wants, for example on copyrighted material or official records. Changing the content of such a document, or passing off an edited copy as the original, can break the law or an agreement. When in doubt, ask the sender for an editable version.

Protecting your own documents

If you want to protect a PDF you send, use an open password and share it through a different channel than the file, for example by text message when the file goes by email. Permission restrictions alone will not keep anyone out.