Color scans are creating dark grey background on PDF's, and I need background to be white

[johnnyIES]

Color scans are creating dark grey background on PDF's, and I need background to be white. I can scan in black and white, and this is a non issue, but I need the images to be the correct color. Is there a setting change that I can make. The user is using Adobe Acrobat 11 Standard.

[Adorobat · Accepted solution]

Hi JohnnyIES,

Sorry for the delay in response.

Try background removal tool in Acrobat and see if that helps. Under tools > document processing > optimize scanned pdf, click edit under filters > background removal > high.

Below is the screenshot:

Thanks,

Shivam

[Natan1549]

Hello, I have the same question, I have followed the instructions but there are no changes on aplying changes.

Is there any solution?

[Sally2312597662nn]

I followed your instructions and it made no change, this was a scanned document that was opened in adobe , all the scanned/signed docs came into dropbox all with grey backgrounds,

we are waiting for anyone else who could suggest a fix, Ive been at this all day with no outcome.

[Dhritiman277255549vuv]

The only quick fix solution is upload the document on https://www.scanwritr.com/ and click the contrast button. It will clear the background. It is a paid software, but you can download with the 'scanwritr' water mark at the bottom.The free version works on a per page basis. For mulitple pages, you need  to pay.  

[jack27423756aher]

This seems great but I can't believe there is not a way to do this via adobe. It seems so obvious! Also, is it possible to use the "contrast" tool on multiple pages at the same time? There's not a lot of info on their site re. the advantages of paying, aside from watermark removal, which really doesn't bother me that much. 

[Mary Nelson357033271bwr]

This worked to remove the gray but when I downloaded it the file came up blank.  I am using a Mac Pro computer and Canon TSl520 printer/scanner.  I'm trying the free version on one page. Suggestions?