Check the redaction in a PDF
A black box drawn over text only covers it: the text is still in the file and can be copied out. This tool finds text under black boxes and invisible text, lists it page by page, and can remove it for good. The file is checked in your browser and is not uploaded.
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How to Redaction check
- 1
Open your PDF
- 2
Go through the results page by page: text under black boxes and invisible text
- 3
Remove the text for good if needed, then save
Highlights
Finds text readers cannot see
Text under a black box that can still be selected and copied, and invisible text, are listed page by page.
Removes it for good
The redaction feature deletes the text from the file; affected pages are converted to images when you save. Redaction is Pro and free to try.
Nothing is uploaded
The check runs in your browser, so a sensitive file does not have to be sent to any server.
FAQ
Why can redacted text still be copied?
Often a “redaction” is only a black rectangle drawn over the text. The text itself is still stored in the file and can be selected, copied or found by search. Real redaction deletes it from the file.
Is the redaction check free?
Yes, checking is free. Removing what it finds uses the redaction feature, which is Pro: free to try, paid when you save the file.