Redmine

+1

Might be of some help: https://code.google.com/p/pyfpdf/source/detail?r=6d269f7474c6.

Here is a backported plugin by monkey patching: https://github.com/t-yuki/redmine_pdf_export_backports

Has the patch provided by Yukinari been validated with newer versions of Redmine? We are on 2.3.4 stable. Thank you for helping to address this 16-bit PNG issue.

Applied the patch in my test environment but saw no change. I loaded the Redmine PDF Export Backports plugin which granted the ability to export as HTML but PDF is still unable to render. Any ideas on how to resolve? Thank you.

Update

I have loaded the plugin provided by Yukinari https://github.com/t-yuki/redmine_pdf_export_backports and was able to resolve the PDF export issue. In order to export PDF's, the short syntax of declaring an image must be used. For example:

"!myimage.png!" without quotes

We were using the long syntax of declaring the entire URL string. Adjusting the syntax allowed images to display properly in PDF exports.

Thank you Yukinari for your help with this.

It is great!! I tested under redmine 2.3.2, and tested with alpha channel png, now exported pdf can display that type of png normal. thanks.

Yukinari TOYOTA wrote:

Here is a backported plugin by monkey patching: https://github.com/t-yuki/redmine_pdf_export_backports