Exporting charts from QlikView .qvw documents and downloading the files may lead to charts with corrupted visuals. This may specifically impact complex charts (utilizing shadows, scales, and other visual settings).
Example One:
This bar chart with active shadows has been downloaded to PDF. The file is corrupted and fails to open with the error Failed to load PDF document.
Example Two:
Gauge charts scale exported bigger and the charts get smaller.
Resolution
Add the configuration SlowPrinting in the QlikView Settings.ini and export again.
Example for QlikView Desktop:
Close Qlikview Desktop
Navigate to C:\Users\<User>\AppData\Roaming\QlikTech\QlikView\
Open Settings.ini as an administrator
Add the following parameter under [Settings 7] SlowPrinting=1 (IMPORTANT: The line must be added at the top of the list i.e directly under [Settings 7])
Save the file.
Printing will be slower and potentially generate larger files.
By default, QlikView is set for high-speed PDF printing which may result in perceived lower-quality PDFs.
In turn, if it is not set for "high speed" PDF printing, and apparent lower quality is experienced, this may be a user perception issue and actually due to the "low speed" setting being enabled.