Exporting RTF – WTF with images?

Forum|Forum|9 years ago
December 11, 2016
3 replies
2410 views

I need to export the publication as RTF to convert it to FB2 eBook format.

When exporting to RTF, InDesign is resizing images—and in a certain way. Okay, I thought: then I will just prepare all pictures of the maximum possible width×height.

But these parameters are not described anywhere—there are no RTF export options, neither in the interface nor in the scripting guide.

Okay, I thought: it’s easy to learn empirically. But not all so simple! Picture e.g. of 600×600 px decreases to 500×500, but 400×700 remains intact! And there is no difference with file formats (PNG, TIF, JPG) or actual/effective dpi or linked/embedded or frame size.

As I found empirically, InDesign resizes image if its area (sic!) is slightly less than 350’000 pixels (speaking only about RGB images)—1000×349 remains invariable, but 1000×350 is resized—and guess how?

The image resolution is assumed to be 72 dpi and then decreases in quite peculiar way in increments of 18 dpi: 54 dpi, 36 dpi, 18 dpi…

So 1000×350 px (≈14″×5″@72 dpi) becomes 750×263 px: ≈14″×5″@54 dpi. What a weird s**t!

Is there anyone who can explain how exactly this amazing export module in InDesign is working?

(InDesign CS6–CC2017)

rtf

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Geоrge

Legend

Ты сам ответил на свой вопрос. Продолжай дальше экспорт в fb2 из epub.

Do it as you do "epub to fb2", and forget about rtf. RTF need it is only for text export.

Remember, never say you can't do something in InDesign, it's always just a question of finding the right workaround to get the job done. © David Blatner

rob day

Community Expert

Is there anyone who can explain how exactly this amazing export module in InDesign is working?

You are right there is no support for RTF exports in ID.

It seems like you are trying to export a document, but you did not mention to what format—JPEG, PDF, ePUB, etc.

If your export is to ePub the image resolution would depend on the image's output dimensions relative to the page. So in this example the selected image's frame is set to 4"x3" on the page, which you can see in the Transform panel when the rulers are set to inches. If I set the Conversion Settings' Resolution to 150ppi, the exported image asset will be 600x450 pixels ((4x150) x (3x150))