Guides

What redaction actually is, what the usual tools do instead, and what the law expects.

• Why a black box on a PDF hides nothing

  The rectangle is drawn on top; the words stay underneath, where a copy-paste finds them. How to check a file you have already sent.

• How to redact a PDF without uploading it

  Most online redaction tools send your document to a server. What that means, and how a browser can do the work instead.

• Redaction and privacy law

  What "anonymised" means to a regulator anywhere, why a covered-over PDF is still a breach, and what you are expected to be able to show.

• Frequently asked questions

  Short answers: file size limits, scanned documents, metadata, what the tool refuses to do.