Change PDF trim box in relation to centre, not origin

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antipodes
Newbie
Posts: 5
Joined: Mon Mar 20, 2017 5:47 am

Change PDF trim box in relation to centre, not origin

Post by antipodes »

Is it possible to automagically change the trim box in a PDF in respect to the centre of the trim box rather than the origin?

We get slightly mis-sized files from clients (i.e. 85 x 54 instead of 86 x 54) that I then want to run through the Switch-Indesign Imposition Config. That 1mm (or even .5mm) counts for a lot as they final product is cut with a set 3 across die. I'd like to take those wrongly sized files and tweak them to the right size so our resulting file is good. This needs to be done from the centre point rather than the lower-left corner.

Any clues?
bens
Advanced member
Posts: 252
Joined: Thu Mar 03, 2011 10:13 am

Re: Change PDF trim box in relation to centre, not origin

Post by bens »

You could use the "Change trim box" action set to "Resize", and use Switch variables to calculate how much to resize.

Alternatively, throw away all the page boxes and start anew. First use "Change media box", which has an option to move the page content anchored to the centre of the box. Then use "Change trim box" to set the trim box exactly how you want it.
antipodes
Newbie
Posts: 5
Joined: Mon Mar 20, 2017 5:47 am

Re: Change PDF trim box in relation to centre, not origin

Post by antipodes »

Thanks for that, I'll give it a whirl.
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