Strangely enough, we don't see any specific error message from convert, only the message that it doesn't work. Do you see more if you execute the same command "manually", i.e. convert -units PixelsPerInch -type Bilevel -density 300x300 "mypdf.pdf[1]" "output.pbm" Does this work or do you see any error?
Outputs only blank pages.
Hi, this looks like an ImageMagick problem and might be a duplicate of Bug #22: On some systems, ImageMagick has not enough permissions to deal with pdf files. You can easily fix this. Look, for instance, here: https://stackoverflow.com/questions/42928765/convertnot-authorized-aaaa-error-constitute-c-readimage-453 Does that help?
Great to hear, although that does not solve the problem with 18.04 yet. It seems there is no other way than having the users to change the policy file manually. And even this only works if the user has admin rights.
Disable tesseract parallelization
Thanks for bringing this up, this is pretty awful. I don't see a way to override this policy with -limit or with an environment variable. Do you have any ideas? The only way seems to be to edit the policy.xml file manually, which would be a nuisance for occasional users.
website updated
Please create temp dir under subdirectory