Security & Protection
Protect and clean documents: AES-256 password protection, unlocking, metadata editing and removal, and flattening forms.
4 tools · free · processed in your browser
Protect PDF
Secure PDF password protection locally. Add AES-256 encryption without exposing files to any server.
Get startedUnlock PDF
Safe PDF password removal on your device. Unlock files privately with zero server uploads.
Get startedEdit Metadata
View and edit title, author, subject, keywords and dates, or strip all metadata for privacy.
Get startedFlatten PDF
Flatten form fields and annotations into static content, or rasterise pages so nothing can be edited. Local only.
Get startedAbout security & protection tools
Security tools control who can open a document and what it reveals. Protecting a PDF applies AES-256 encryption with the password you choose, and unlocking removes a password you already know. Because both happen in your browser, the password is never sent anywhere.
Metadata often carries more than people expect: author names, software versions and edit dates. The metadata editor shows and clears it, and flattening turns fillable form fields and annotations into fixed page content so they cannot be changed later.
Which one do you need?
- Only the right people can open it
- Protect PDF →
- A PDF you have the password for
- Unlock PDF →
- Hide the author or change the title
- Edit Metadata →
- Lock filled-in form answers
- Flatten PDF →
Ready to work with your PDFs?
Start using Docmint — free, fast, and private.
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