this is been bugging me for months now, if not longer.
I have tried every setting, changed things around, imported different types of image file types, flattened transparency, etc. etc.
But it seems indesign ads an enormous amount of unspecified metadata to exported pdfs. My only solution right now is using acrobat to optimize the pdfs, only taking out unnecessary data, not touching the image res, compression etc. It's clearly not a resolution thing.
A pdf that i expect to be not bigger than 1 mb becomes 50+ mb, after taking out only this data in acrobat, it becomes 600 kb...
(sorry my settings are in dutch, hopefully you can compare side by side or something )
So the filesize increase happens when using transparency and isn't resolution and or compression related, Indesign adds some mystical metadata not needed.
It's really annoying because i want to be able to email good looking pdfs to clients, without the ugly lines you got most of the time using flattening. Now i have to make this extra step, which wasn't the case in CS6 for sure.
Does anyone know why this happens and how to fix it?
File size is generally dependent on the content of the InDesign document. Can you send a screen shot of what a typical page looks like?
I've had this issue with very simple designs as well as complex ones, and also had no trouble with all with both.
It seems sometimes data gets added that was already there and makes indesign go haywire...
when i pdf'd the above document (screen resolution), i'd get a 28 mb pdf...
When i use acrobat to ONLY remove document and metadata and leave everything else as is, its only 402kb.
Oh yeah, and it's only 1 page. Not even multiple. Strange huh?