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Mike_73 · 05-26-2010, 03:35 AM

I have scanned pdfs that have very light fonts. Zooming into the page increases the documents to a readable level, but text is still very grayish. I could extract the single pages and then increase contrast for every page and put it back together as a pdf. Unfortunately, the auto-contrast-adjustment takes the pages average contrast values which can differ from page to page depending on graphics and charts on a page, so the outcome isn't really consistent.

Is there a program which can increase or somewhat re-render text in a scanned pdf without having to deal with single pages?

05-26-2010, 03:35 AM	#1
Mike_73 Guru Posts: 750 Karma: 1323 Join Date: Dec 2009 Device: PRS-505, PRS-600, iPad 16GB Wifi, Kindle Voyage, Nexus 6, Razr HD	Advise for scanned pdf I have scanned pdfs that have very light fonts. Zooming into the page increases the documents to a readable level, but text is still very grayish. I could extract the single pages and then increase contrast for every page and put it back together as a pdf. Unfortunately, the auto-contrast-adjustment takes the pages average contrast values which can differ from page to page depending on graphics and charts on a page, so the outcome isn't really consistent. Is there a program which can increase or somewhat re-render text in a scanned pdf without having to deal with single pages?