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Support Article

PDF View displays symbols instead of content



When the user clicks View PDF, the PDF view displays special characters instead of the content.This occurs for a few PDF files. However, when the PDF files are downloaded, the content displays correctly.


Error Messages

Not Applicable


Steps to Reproduce

  1. Log in to the Pega Platform.
  2. Add a PDF attachment to a case.
  3. Click the PDF to view.


Root Cause

A third-party product issue.

Special characters display when the PDF file extension is in upper case letters.Tomcat 7.0.88 does not have MIME type mapping for the .PDF file extention in web.xml . 



Perform either of the following local changes:

1. Add the following MIME type in web.xml of the current Tomcat version.


2. Restart the server.

Or, update Tomcat 7.0.88 (the current version) to Tomcat 8.x.

Published December 2, 2021

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