Is this the same as drawing a black box in Preview?

No. A box can leave the text selectable underneath. This tool is meant to remove the matching content.

Does it catch text inside images?

Text that is only pixels in a photo is not a text object. OCR first if the secret is in a scan, then redact, or rasterize and crop. Spot-check scans.

Yes, if titles, author fields, or embedded files might still contain the same strings.

Not installedPlugin

37 tools

Permanently black out text

Input PDF*

Drop files here or click to browse

PDF files only

Words/patterns to redact (comma-separated)*

Treat as regex