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Exported PDF images not rendering well on screen

New Here ,
Jul 27, 2020

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Hi there! 

 

I have a book cover file on InDesign where I have imported Illustrator PNG's. It shows well in the program, and when I export it to JPEG, but when I export it to print PDF it has a weird dark border between two layers of images (see files for reference). When I export it to interactive PDF it doesn't have this problem. 

 

Is it just a screen rendering problem, and will it print well? Should I export it as something else? 

 

Correct.JPGRender.JPG

 

Adobe Community Professional
Correct answer by rob day | Adobe Community Professional

Should I try to insert AI files instead of PNGs?

 

Yes—there’s no reason to rasterize your AI file.

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Import and export, Print

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Exported PDF images not rendering well on screen

New Here ,
Jul 27, 2020

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Hi there! 

 

I have a book cover file on InDesign where I have imported Illustrator PNG's. It shows well in the program, and when I export it to JPEG, but when I export it to print PDF it has a weird dark border between two layers of images (see files for reference). When I export it to interactive PDF it doesn't have this problem. 

 

Is it just a screen rendering problem, and will it print well? Should I export it as something else? 

 

Correct.JPGRender.JPG

 

Adobe Community Professional
Correct answer by rob day | Adobe Community Professional

Should I try to insert AI files instead of PNGs?

 

Yes—there’s no reason to rasterize your AI file.

TOPICS
Import and export, Print

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59

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Jul 27, 2020 0
Adobe Community Professional ,
Jul 27, 2020

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If you are using Illustrator files, they would not be PNG bitmap images; they would and should be native .AI vector files. Also, what color model are your placed files? What color model is your InDesign document?

Mike Witherell

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Jul 27, 2020 1
New Here ,
Jul 27, 2020

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Thanks for your response! What I did was I exported from Illustrator the images as PNG and then dropped them into InDesign. My AI file is in CMYK mode, as well as my InDesign one. Should I try to insert AI files instead of PNGs? 

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Jul 27, 2020 0
Adobe Community Professional ,
Jul 27, 2020

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Should I try to insert AI files instead of PNGs?

 

Yes—there’s no reason to rasterize your AI file.

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Jul 27, 2020 1
New Here ,
Jul 27, 2020

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Thanks! I just swapped the image for the AI version and the problem is gone. Lesson learned! 

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Jul 27, 2020 0
Adobe Community Professional ,
Jul 27, 2020

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How does the print PDF look in Acrobat or Reader with the Use Overprint Preview preference set to Always? (recommended)

How does the outline look when you zoom in? Exporting to an interactive PDF will remove overprinting, which might explain the display difference. It's also possible someone added trapping in Illustrator, or that your print PDF was exported at a higher resolution.

I suspect it's just an issue of your PDF viewer, if it looks OK in Acrobat or Reader, you should be OK for print. 

Also, I agree with Mike that vector art is preferred, if you have it. And don't use spot colors if you are not printing with spot colors, although you could possibly print your cover with 2 colors. Don't forget bleed and a spine, if needed.

Overprint preview.png

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Jul 27, 2020 1
Adobe Community Professional ,
Jul 27, 2020

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You should place your images in RGB color mode in InDesign (and keep them as native AI files).

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