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Participating Frequently
March 4, 2018
Question

when combine files into single pdf the image quality is reduced why?

  • March 4, 2018
  • 5 replies
  • 15882 views

Hi

when I select combine files into a single pdf the image quality is being reduced, I am combining multiple PDFs and the image quality was 300dpi in the original pdfs but after I combine them and before I saw the combing file the images are now less then 150dpi, I have check all the settings and preferences on my computer and my fellow operator's computer and all the settings are the same, when he does the exact same thing on his computer the combined file is High Res and the image quality is 300 the same as the original files, but when I combine the files the images become Low Res and the quality is poor, is there a setting somewhere that I ahem missed  that controls how files are combined into a single pdf.

Need your expertise to solve this issue

Thanks Tony C

5 replies

Participant
March 12, 2025

Hey all! I had the same question and found a solution I'm posting for anyone else in need. I found out here that the files need to be saved as a .PSD first (rather than a .PDF), and then Bridge can combine them with no loss of quality!

Participant
January 19, 2025

How can I merge multiple files in to one

Community Manager
February 3, 2025

Hi @SYED 77

 

  1. Open Acrobat. Hover over the Create tab.

    Acrobat is open in Home view and the Create option in the top left is highlgihted.

     

  2. Select Combine files. It opens the Combine files window. 

  3. From the Combine files window, select Add files. A browser window opens. You can select the files you want to combine. To select the files on macOS, press command and select the files, or for Windows, press Ctrl and select files (Windows). 

  4. From the Open PDF Files dialog box, select the files that you want to combine. To select the files on macOS, press command and select the files, or for Windows, press Ctrl and select files (Windows). 

  5. Select Add Files.

    Open PDF Files dialog is open. The Add files button is highlgihted.

     

    Note: 

    If you add a folder that contains files other than PDFs, the non-PDF files are not added.

  6. The files that you added are shown in the Combine files window. You can re-arrange the documents in the order you like. Then select Combine from the top-right. 

    The combine files window is open and the combine option is highlighted in the top right

     

    The combined files open in a new tab in Acrobat. 

 

To know more about Merge PDFs or create a combined PDF file, please visit this help page: https://adobe.ly/4aGfOkz;

 

Let us known if you have more questions.

 


~Tariq

Participant
March 12, 2021

@tonyc32445412 @magbertu , try this modify the values here:

ethant68142793
Participant
March 19, 2021

You are a champion. Thanks for ur help

adriánp64552755
Participant
March 3, 2021

Man, you'd think that for such a large and robust product, you'd get better support.

 

2021 and I'm trying to find an answer to this same issue. Image quality is degraded to a ridiculous level when I combine several files into a PDF in Acrobat Pro.

Adorobat
Community Manager
Community Manager
April 13, 2018

Hi Tony C,

Sorry for the delayed response.

Try using "Larger File size" option" under Combine files > Options and check if that helps. (below is the screenshot)

Let us know if you need any help.

Shivam

Participant
May 9, 2018

Hi, I have the same problem that Tony C. I already did choose the "larger file size" option, but it doesn´t make any difference. And I don´t have the possibility to change any other property before combining.
Any other help we could have?

Thanks.

Adorobat
Community Manager
Community Manager
July 11, 2018

Hi Pauls,

Sorry for the delayed response.

Please try the troubleshooting steps suggested in the following forum threads discussing the similar issue:

When combining images quality is lower

Adobe Acrobat is lowering the quality of my scanned pages during its "optimization" process. http://i.imgur.com/NTdh0LB…

Thanks,

Shivam