PDF Security and Repair Tools

Control access, remove restrictions when you have permission, redact sensitive details and recover damaged PDF files.

Security and repair tools protect the parts of a PDF workflow that can cause the most friction: passwords, permissions, sensitive content and files that will not open cleanly.

Choose the right PDF security tool

Protect PDF Protect PDF files by adding a password.

Unlock PDF Remove password protection from your PDF.

Redact PDF Permanently black out sensitive PDF text and areas

Repair PDF Repair a damaged PDF and recover data from a corrupt file.

Compare PDF security tools

Tool	Best when	Use next
Protect PDF	Protect PDF files by adding a password.	Unlock PDF, eSign PDF
Unlock PDF	Remove password protection from your PDF.	Protect PDF, Repair PDF
Redact PDF	Permanently black out sensitive PDF text and areas	Protect PDF, Unlock PDF
Repair PDF	Repair a damaged PDF and recover data from a corrupt file.	Compress PDF, Merge PDF

How to choose among PDF security tools

Control who can open or change a PDF

Use Protect PDF when a completed document needs a password. Use Unlock PDF only when you own the file or have permission to remove restrictions. The distinctions are mapped in password protect vs encrypt vs restrict editing.

Protect PDF Unlock PDF

Remove sensitive content before sharing

Use Redact PDF for personal data, financial details, signatures, account numbers and internal notes that should not remain recoverable in the shared file. For financial documents, follow redact Social Security numbers and bank details.

Redact PDF

Recover files before the rest of the workflow

Use Repair PDF before merge, compression, conversion or signing if the document fails to open, displays errors or appears damaged.

Repair PDF Compress PDF

Quality checks before you download

Repair damaged files before adding passwords or trying to convert them into another format.
Redact first, then protect the final version so the secured copy contains only safe content.
Confirm the password with the recipient through a separate channel when the PDF contains confidential information.

Best workflow

Repair the file first if it is damaged or fails to open.
Redact sensitive content before sending the PDF to someone else.
Protect the final version with a password when access should be limited.

Common use cases

Add password protection before sharing a private PDF.
Unlock a PDF you are allowed to edit or convert.
Repair a damaged file before trying to merge, compress or convert it.

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Questions about PDF Security

Can I unlock any PDF?

Use Unlock PDF only on files you own or have permission to modify.

Should I protect a PDF before or after editing?

Protect the final version after editing, redacting, signing or compressing so recipients get the completed file.