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Question

I get a "smearing" effect when I batch export all pages in a PDF to JPG.

Forum|Forum|4 years ago
January 14, 2022
4 replies
4001 views

I have a PDF in which each page is an image. I want to save each page as a JPG.

When I batch export to JPG, I see smearing on the JPGs. What can be causing this? I am subscription-based and using Windows 10.

I have posted a "before" PDF and as "after" JPG. Thank you.

Botanicus-Fragmenta_botanica-figuris_coloratis_(25).pdf

Edit and convert PDFs

This topic has been closed for replies.

Luke Jennings3

Community Expert

I can export your attached pdf to .jpg without any problem (on a Mac), I noticed your pdf is a PDF/A, is this intentional? Can you convert an individual pdf to image? (before you combine). Check for Acrobat updates, (Help> Check for updates).

If I try to edit the image from Acrobat, using Photoshop, the smearing appears (see attached), which suggests your Acrobat install might not be the problem. The original pdf was created with a Lura Tech Scanner app (free) in 2007, which seems to be compressing the image (JBIG2Decode*) and probably causing the smearing. I briefly tried to remove the compression in Acrobat, but had no luck. Opening the PDF in Photoshop and saving as an image, or, placing into InDesign and exporting to .jpg might be the best work-around.

*as identified with an Acrobat preflight.

Hopefully this information will help you find a fix.

Edit, I found a preflight that will probably fix your issue, see 3rd attached screen shot. You will need to duplicate an existing preflight and change the setting to RGB (your original image is RGB). Once applied, the image opens correctly in Photoshop, it is also larger.

folderolgirlAuthor

Known Participant

The PDFs were sent to me, so I don't know about the format. Sorry.

I tried to export one of the PDFs to JPG and there was no damage. I was trying to avoid this as there are over 150 PDFs. Thank you, and I'll try the preflight info.

Karl Heinz Kremer

Community Expert

One more question: Which application are you using to view the extracted/exported JPEG file?

Bernd Alheit

Community Expert

In Adobe Acrobat DC I get this:

folderolgirlAuthor

Known Participant

Yes. It's the JPGs that are smeared. The PDFs are fine. Thank you.

Bernd Alheit

Community Expert

I posted a fine JPEG.

Karl Heinz Kremer

Community Expert

Are you trying to save each page as JPEG, or are you trying to export all images from the file? These are two diferent functions. Does this also happen when you export to TIFF? The two functions are File>Export To>Image><format> and for the second one, you have to create a custom tool based on the instructions here: https://community.adobe.com/t5/acrobat-discussions/how-can-one-extract-images-from-pdf-using-dc/m-p/7197500

folderolgirlAuthor

Known Participant

I have the individual PDFs in a folder (I was sent them as individual PDFs).

I selected all of them, right-clicked, and chose "Combine all files in Acrobat". Now they are all combined into a "binder".

From there, in Acrobat, I've been selecting "Export PDF" and then "Images" because I need them as JPGs.

The thumbnails are fine in Adobe, but when I look at the JPGs in their folder in File Explorer - they are smeared. They are also smeared when I open them in Photoshop 2022.

Thank you for responding.

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