How to redact a PDF properly (so the text is really gone)
Proper redaction deletes the characters from the file, not just hides them behind a black box. Overtype removes the underlying text and then verifies it is gone, all on your own computer.
The classic redaction failure is famous for a reason: someone draws a black rectangle over a name, saves the PDF, and the name is still sitting in the file underneath. Anyone can select the text, copy it out, or read it with a search tool.
The rectangle is an annotation. The text is a separate object in the document. Covering one does not remove the other. Real redaction has to delete the characters themselves and then confirm nothing was missed.
Step by step in Overtype
1. Open the document in Overtype
Open the PDF from your computer. Because processing is local, you can redact sensitive material without handing it to a website first.
2. Select Redact and drag a box over the words or lines to remove
Each box is applied as you release it; repeat for every area, on any page.
3. Apply the redaction
Overtype deletes the characters inside each marked area from the document's content, rather than layering a shape over them.
4. Verify
Overtype then checks the whole file and confirms the removed text no longer appears anywhere, including page properties and metadata.
5. Export the clean copy
Save the redacted PDF to your computer. Keep the original separately if you need an unredacted record.
Why this works on your device
Redaction is exactly the job you should not outsource. Uploading a document to redact it means the unredacted version — the one with the names and account numbers still in it — travels across the internet and lands on a server you do not control. Overtype never makes that copy: the file is parsed, altered and written back out inside your browser.
Questions
- Is a black rectangle ever enough?
- No. If the text object is still in the file, it can be selected, copied or extracted regardless of what is drawn on top of it.
- What if I only want to hide something visually?
- Use whiteout instead. It is a movable cover box with adjustable colour and opacity, intended for tidying a page rather than for security.
- Can I redact a scanned page?
- A scan has no text layer, so there is nothing to delete — cover the area with whiteout. If you ran OCR first, redact the recognised text as usual.