PDF Security — Sign, Redact & Compare PDFs
Sign documents, permanently redact sensitive areas and compare two PDFs. Free and private.
PDF security tools help you sign, protect and check documents. Sign PDF lets you draw a signature and place it on a page, Redact PDF blacks out sensitive areas, and Compare PDF shows what changed between two versions.
Redaction here rasterizes the covered area so hidden text cannot be recovered by copy and paste. Everything runs locally, so confidential documents are never sent to a server.
Frequently asked questions
Is a drawn signature legally binding?+
It is an image of your handwritten signature, like signing on paper. Whether it is sufficient depends on the document and your jurisdiction. It is not a certified digital signature.
Is redacted text really removed?+
Redacted areas are flattened so the text underneath cannot be selected or copied from the result.
Do these tools upload my document?+
No. They run in your browser.
Everything here runs in your browser — files are never uploaded. Browse all tools →