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Nitro PDF: areas of black - so it goes

  • Oct 23, 2025
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Sensitive areas in a PDF document, you blacken in a few steps with the program "Nitro PDF". We will show you how to do it.

Privacy and data protection - areas with Nitro PDF black

The Adobe-Acrobat-Alternative "Nitro PDF" allows you, without much effort sensitive area in a document to black. The text to be removed in sections and black blocks replaced. In order to use this Feature, you need however, the paid full version for currently 136,99 Euro.
  1. Open an existing PDF document in the "Nitro PDF Reader".
  2. Click on the tab "Protect". Now you can find left above a point "content highlighting" the point "For the redaction mark". Select the range of text you want to redact. This can be images, single words, paragraphs or whole pages.
  3. Up to now, is still blackened nothing is final, but only marked. You want to make several sections of the document are defaced, you can apply this step multiple times.
  4. To black out Text permanently, click the apply to "All of the redactions", it removes the marked locations. Attention! Redactions cannot be undone! However, they will be active when you save. You have blacked out accidentally in a place, close the document without saving it.
Since the Free Version of Nitro PDF is now greatly reduced, we have, in a further practical tip 3 a good Alternative to Nitro PDF for you.

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