How do PDF permissions work?

PDF permissions are flags set in the document's encryption dictionary that tell PDF viewers what operations to allow. The owner password grants full access regardless of permissions. The user password (if set) is required to open the document. Without the owner password, viewers enforce the permission restrictions.

Are PDF permissions truly secure?

PDF permissions are respected by compliant viewers like Adobe Acrobat, but they can be bypassed by specialized tools since the actual content is accessible. They serve as a deterrent and clear signal of intent rather than absolute protection. For stronger protection, use encryption with a strong password.

Can I set different permissions for different users?

PDF supports two access levels: owner (full access, requires owner password) and user (restricted access, subject to permission flags). There is no per-user permission system in the PDF specification.

What is the difference between this and Protect PDF?

Protect PDF focuses on adding password encryption to control who can open the document. Change Permissions focuses on controlling what actions are allowed after the document is opened. They are complementary: you can use both together for full access control.

Change Permissions

Modify the access permissions embedded in a PDF document directly in your browser. Control what recipients can do with your PDF: allow or restrict printing, copying text, editing content, adding annotations, and filling form fields. Permissions are enforced by PDF viewers that respect the permission flags. Processing runs locally via WebAssembly, keeping your documents private.

Requires server-side processing

Powerful Change Permissions Features

Granular Control

Set individual permissions for printing, copying, editing, annotations, and forms.

Flexible Policies

Allow some actions while restricting others to match your distribution needs.

Private Processing

Permission changes applied locally. No documents uploaded to any server.

How To Change Permissions Online for Free

Upload Your PDF

Drop your PDF into the tool. Current permissions are read locally on your device.

Set Permissions

Configure which actions to allow or restrict: printing, copying, editing, annotations, form filling.

Download Updated PDF

Download the PDF with your permission settings applied.

Everything You Need in a Change Permissions

Print Control

Allow printing, restrict to low quality only, or deny printing entirely.

Copy Control

Enable or disable text selection and copying from the document.

Edit Control

Allow or restrict content editing and page manipulation.

Annotation Control

Permit or deny adding comments, highlights, and annotations.

Form Control

Set form filling permissions independently from other restrictions.

Local Processing

WebAssembly applies permissions on your device. Documents stay private.

Frequently Asked Questions

Document Work Made Easy

Process your PDFs with our collection of free, privacy-first tools. No uploads to servers, no registration required. Everything runs directly in your browser.