Redmine

I experience this issue in Redmine version 4.2.0 in the docker version. All PDF thumbnail images are broken, but not image preview thumbnails.

Environment:
  Redmine version                4.2.0.stable
  Ruby version                   2.7.3-p183 (2021-04-05) [x86_64-linux]
  Rails version                  5.2.5
  Environment                    production
  Database adapter               Mysql2
  Mailer queue                   ActiveJob::QueueAdapters::AsyncAdapter
  Mailer delivery                smtp

Plastik Schnitzer wrote:

I experience this issue in Redmine version 4.2.0 in the docker version. All PDF thumbnail images are broken, but not image preview thumbnails.

The problem that PDF thumbnail images are broken should be improved by rewriting policy.xml.
I think https://stackoverflow.com/questions/52861946/imagemagick-not-authorized-to-convert-pdf-to-an-image answer will be helpful.

Mizuki ISHIKAWA wrote:

The problem that PDF thumbnail images are broken should be improved by rewriting policy.xml.

This does indeed resolve the issue, but I believe the intention of this defect report was to point out the discrepancy between admin/info and what is actually available. It would be really nice if Redmine could alert administrators that PDF support is generally available, but PDF previews are not available.

Scott Macpherson wrote:

Mizuki ISHIKAWA wrote:

The problem that PDF thumbnail images are broken should be improved by rewriting policy.xml.

This does indeed resolve the issue, but I believe the intention of this defect report was to point out the discrepancy between admin/info and what is actually available. It would be really nice if Redmine could alert administrators that PDF support is generally available, but PDF previews are not available.

You are right.