Redact private information in a document
Remove sensitive text and hidden data from a copy, then test the exact file you will send.
Follow the method ↓
The answer in 30 seconds
Drawing a dark rectangle over a name may only cover it visually. Depending on the file format, the underlying text, annotations, comments or metadata can remain available to the recipient.
Work on a copy, use a real redaction or sanitisation function suited to the format, inspect hidden data and verify the exported file by searching, selecting and reopening it.
Examples to adapt
Use a PDF redaction tool and apply the redactions before sharing.
Remove tracked changes and comments as well as visible passages.
Check every page and any OCR text layer that may accompany the picture.
Follow the method
- 1Create a separate copy
Preserve the original under appropriate access and edit only the shareable version.
- 2Identify private material
Review visible text, headers, comments, attachments, metadata and any OCR layer.
- 3Apply removal
Use the format's redaction or document-inspection tools; export a clean final copy.
- 4Test as a recipient
Reopen the exported file, search and select near the removed area, inspect properties and review every page.
A checklist to keep
Use these checks to record what you found. The grid supports a decision; it does not make one for you.
| Check | What to examine | Action |
|---|---|---|
| Original | Is a protected copy retained? | Separate |
| Visible text | What must be removed? | Mark |
| Hidden data | Comments, metadata or OCR? | Inspect |
| Export | Was removal applied to a new file? | Create |
| Verification | Can removed content be recovered? | Test |
Free, no sign-up. UTF-8 text with semicolon-separated columns.
What to check
A black shape is not equivalent to deleting the underlying content.
Search indexes, thumbnails and metadata may carry information beyond the visible page.
A failed or incomplete export can leave the original sensitive version in the wrong folder.
Common questions
Can I just crop a screenshot?
A screenshot may remove some text layers, but visible clues and image metadata still need checking.
Should I keep the unredacted file?
Retain or delete it according to your legitimate record-keeping needs and access rules; share only the verified copy.
Sources and documentation
Documentation consulted on . Examples are illustrative; interfaces and results may change.