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"Multiply" effect in ePub

Enthusiast ,
Jan 16, 2020

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I have an ID doc with images set to "multiply" with an identical clipped image set to normal on top, all on top of a colored background. Creating a PDF and printing, image produces as expected. When exporting ID 2020 to ePub, the "multiply" setting is not respected and I'm getting the white background of the image. Any ideas on how to solve, or is this a limit of ePub? As you can see, also having font issues, but the developers tell me then can hard code that.

Screen Shot 2020-01-16 at 2.44.28 PM.pngIMG_903477471DA0-1.jpeg

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"Multiply" effect in ePub

Enthusiast ,
Jan 16, 2020

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I have an ID doc with images set to "multiply" with an identical clipped image set to normal on top, all on top of a colored background. Creating a PDF and printing, image produces as expected. When exporting ID 2020 to ePub, the "multiply" setting is not respected and I'm getting the white background of the image. Any ideas on how to solve, or is this a limit of ePub? As you can see, also having font issues, but the developers tell me then can hard code that.

Screen Shot 2020-01-16 at 2.44.28 PM.pngIMG_903477471DA0-1.jpeg

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Bug, EPUB, How to

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252

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Jan 16, 2020 0
Most Valuable Participant ,
Jan 16, 2020

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Some blend modes are not supported. Why not use PNGs with transparent backgrounds? And when you do, make sure to select PNG in the export dialog.

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Jan 16, 2020 1
Enthusiast ,
Jan 16, 2020

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They are all PSD files placed. I'd rather not have to try to trace & create a clipping path on all of my product shadows. Not a good look.

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Jan 16, 2020 0
Most Valuable Participant ,
Jan 16, 2020

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Neither is a white box. Try forcing a PNG output or do the entire graphic in Photoshop.

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Jan 16, 2020 0
Most Valuable Participant ,
Jan 16, 2020

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One other thing. You pretty much have to use opentype fonts and beyond Books on iOS and Mac, fixed layout epub is a crapshoot.

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Jan 16, 2020 0
Enthusiast ,
Jan 16, 2020

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Thanks Bob, not a practical solution for the return. We will have to convey that ePub is not ready to replace the printed word. 😄

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Jan 16, 2020 0
Most Valuable Participant ,
Jan 16, 2020

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That's an understatement!

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Jan 16, 2020 0
Guide ,
Jul 13, 2020

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To amend the answers given by Bob: blend modes are not directly supported by epubs, but will work in an epub when the objects (the foreground object(s) with the blend mode set and the background object(s) that is/are affected by that blend mode) are grouped, and the Object Export Options are changed as follows for that group:

rayek_elfin_0-1594671664434.png

The PPI should be set to 72ppi when using an iPad Retina document: the group will then be rasterized to the exact required resolution (do not use 150 or 300ppi, which will needlessly generate a much too high resolution image far exceeding the actual resolution of an ipad's screen).

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Jul 13, 2020 0