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I have been using the text highlighter to black out text by setting the colour to black and the opacity to 100%. This is very wasteful of printer toner. I would like to white out text, but if I set the highlighter color to white, it doesn't show up, even with opacity to 100%. Is there some other way to accomplish this? It almost seems to be a bug. If the colour is white with 100% opacity, it should obscure the text behind it.
Daryl Morse 1110 days ago
See the google search results for NSA Redaction report to see how NSA evaluated the various methods of obscuring/removing data and their conclusion as to the best method for removing sensitive data.
There are various tools that can decrypt and decompress PDF files that can restore the PDFs back into text files and one can even see the incremental updates. Only Redaction removes content and incremental update information.
The highlighter is like the high lighter you used in school, it covers the text but still allows one to read the text.If you want to remove the data or cover it so it is unreadable, also known as redaction, then you need to remove the data and fill-in the space of the removed data then use the Redaction in Acrobat Professional. If you want just a white cover over the text but still allow the text under the cover to located with find, search, and to be cut and pasted , then create a form field with the color white for fill. You could also change the color of the text to white.
Thanks for your reply. You are correct to point out that I am actually redacting text, not highlighting text. Using the highlighter with black colour completely obscures the text, but it's a waste of printer toner. I would have thought that selecting any colour with 100% opacity should obscure any text. Until now, I was not aware there was a redaction feature in Acrobat Pro. Unfortunately, Acrobat Standard is already overkill for my needs. It's hard to justify upgrading to Pro for this feature only.
Daryl Morse Commented 1110 days ago | Report
Acrobat 9 and X Standard have the forms tool. You could also use the Touch Up tool to remove or change the color of the text, but that does not remove the data.
George Kaiser Commented 1110 days ago | Report
Form fields can be moved or their color changed. Redaction is the only serious tool to use.
George Kaiser Commented 21 days ago | Report
If it is really only for yourself and for printing (and not for handing out the "redacted" document to someone else), you can use form fields to cover up the text you don't want to print. Make the field with white fillColor, and read-only. That would be a quick and dirty way to go.For serious redaction work, you might check with Appligent whether their Redax plug-in works with Acrobat Standard. You then would have the "industry standard" tool for Redaction.Hope this can help.Max Wyss.
What I'm trying to do is obscure personal information (e.g., account number) in a visa statement for printing. If there was a "white-out" pen that worked just like the high-lighter, except it was a solid colour, it would work perfectly. I don't need to remove the information out of the PDF, because I don't keep it anyway. I guess there's no easy way to do this without upgrading to Acrobat Pro. Thanks for the help.
You can set the square under drawing markups to show the fill color of white and the line color of white and then add that to your tool bar. It works like white out.
Drawing and markup tools are still annotations and can be moved, deleted or have their color removed.
Covering data does not stop prevent copying and pasting the information under the annotation.
Find still works.
The only serious tool to use to remove the data completely is Redaction.
The National Security Administration has researched this and only considers Redaction as the method to remove sensitive data form a PDF. Even deleting the data only remove the data from vies but unless the document has additional processing to consolidate all the incremental updates into a single stream of content data will not remove the information from access by a skilled user. Redaction not only removes the content but also reprocesses the PDF to remove any incremental updates.
Thanks everyone for the comments. I was only using this to prevent personal information from being visible on printed PDF, so NSA grade redaction wasn't necessary. However, I was trying to do it easily, so I relented and upgraded to acrobat pro. Now I'm using the redaction feature, which allows no colour and therefore saves on toner.
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