Acrobat 2019 brightness

[MoBeFree]

Hi. How can I adjust the level of brightness of PDF file in Adobe Acrobat 2019? Thank you.

[gary_sc]

Can you elaborate on this?

Does the page have a grayish tinge? Did the original document have the same grayish tinge?

Was this a scan?

Please elaborate.

[MoBeFree]

This is a scanned document in full colour. I thought that there must be a button of adjusting the brightness of document despite its type, like Acrobat itself has white and black themes to choose. Thank you.

[gary_sc]

OK you have two options to resolve this issue. The best way is to rescan (wiht the instructions contained in the link below) or deleting the background Using Acrobat (which can be chancy depending on the scan). Both are detailed in this blog I wrote for Adobe sometime back.

http://photosbycoyne.com/Gary's_Help/Scanning/clean-scanning.html

Please let me know if this resolves the problem and issue for you. And I'm curious as to which approach you ended up using.