We have a collection of Acrobat files supplied that have 300dpi images. Part of our 'preflighting' requires a FSC logo adding.
With multiple files we tend to use Pitstop with actions set up to add these details for bespoke trim sizes.
For a large number (50+) of files we may choose to create an Action in acrobat to add a created layer, flatten and save (replacing the existing file).
We have processed files and discovered that the images have been downsampled to 150 dpi, which makes them look awful, with all sorts of ugly artifacts bluring the whites.
We have looked at our actions and cant find anywhere where we are asking for the images to be compressed or resampled.
Can anyone shed any light on this?
Thanks for the reply.
The 'save' as option has been to save/replace, not 'save as' with the option to change the properties of the PDF.
Therefore the file should remain the same, without any image resampling...unless I'm wrong of course!
You said in your first post that you flattened before saving, but in your last post that you only saved. There's a huge difference. Flattening is a very important step, can change everything in a PDF, sometimes for the worse. So, what flattener settings are you using?
Sorry, I appear to have confused things with my terminology, the flattening I mentioned is the added layer being 'flattened' using the layer pallet, therefore dropping the flattening the art one the added layer down to one single layered file...am I making this worse and more confusing? LOL
Does this make sense?
You're right, I think we were confused. The kind of flattening I was thinking of was transparency flattening - a big deal. Layer flattening looks like a fairly cosmetic business of taking out the layer makers and leaving the contents unchanged, so I can't see how that would lower any resolution.
Not preflighting to PDF 1.4 or PDF/X-1a or PDF/X-3 format?
It sounds very much as if some process, in Acrobat or not, is doing transparency flattening. Perhaps it was selected under the impression it was a good idea, or mistaken for layer flattening. An added vector layer sounds exactly the sort of thing to make the resolution change if transparency is flattened.
Try taking the last good file and doing a transparency flattening deliberately, selecting low resolution. Compare the results to see if that is what is happening.
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