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There seems to be a white outline


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Can you upload a copy of the Publisher document with the image embedded?

MacBookAir 15": MacOS Ventura > Affinity v1, v2, v2 beta // MacBookPro 15" mid-2012: MacOS El Capitan > Affinity v1 / MacOS Catalina > Affinity v1, v2, v2 beta // iPad 8th: iPadOS 16 > Affinity v2

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4 minutes ago, soulandorange said:

Green Garden Not sure if I did it right.

Doesn't open. You may want to zip the document before uploading. Also, it's got no suffix. Is it an *.afpub file?

MacBookAir 15": MacOS Ventura > Affinity v1, v2, v2 beta // MacBookPro 15" mid-2012: MacOS El Capitan > Affinity v1 / MacOS Catalina > Affinity v1, v2, v2 beta // iPad 8th: iPadOS 16 > Affinity v2

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Alright, that has worked.

The image is low resolution – only 66 ppi! – and it's not aligned to its frame and to the page by full pixels.
When I open an exported PDF in Preview.app, I see the same white outline as you do.
If I open the PDF in Acrobat X, there's no such white line.
The main difference being that Preview attempts to smooth the image pixels. The white line seems to be something like a "rounding error" (it's all just 1s and 0s, after all).
Whereas Acrobat will display every original pixel as is, even if you zoom in. (Which is exactly what a designer wants to see ;))

There are several ways to work around it, and combinations thereof:

  • use a better resolution image and align it by full pixels
  • make sure that the image overlaps the page size by a few mm (a.k.a. bleed)

In fact, the Preflight warning when exporting as PDF already tells the whole story. :)

MacBookAir 15": MacOS Ventura > Affinity v1, v2, v2 beta // MacBookPro 15" mid-2012: MacOS El Capitan > Affinity v1 / MacOS Catalina > Affinity v1, v2, v2 beta // iPad 8th: iPadOS 16 > Affinity v2

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