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When imagemagick is too old the commands required to convert pdf to jpg are different and it just fails silently, sometimes it prints direct to console without python being informed. This leads to me questioning why it fails to convert to a jpg.

Another silent failure is when ghostscript (gs) is not installed, as I learned last night, will also fail.

imagemagick has also, by default, disabled PDF reading and writing via policy.xml, this file needs editing (see installation docs).

It would be nicer if these kinds of silent failing issues had a python error to go with it instead of blankly continuing on.

A long while ago I determined that 612x792 was the pixel width and height of an 8.5 x 11 piece of paper in a PDF. This has worked for me for many years until this year when a different sized pdf was given to me and it caused tons of distortion issues when trying to get the preview image and field layout system to work.

It would be nice to be able to upload a given pdf of any size and the preview and layout pages still work.