# Non english characters, umlauts and diaeresis missing or appear as boxes in Confluence Data Center PDF export

#### Still need help?

The Atlassian Community is here for you.

Platform Notice: Data Center Only - This article only applies to Atlassian products on the data center platform.

# Summary

When exporting a Confluence page out to PDF, on english characters, umlauts and diaeresis might appear missing, or as boxes or even garbled in the PDF content.

# Environment

Confluence Data Center installation on a Linux Server.

# Diagnosis

1. The following encoding are already set to UTF-8
1. -Dsun.jnu.encoding=UTF-8
2. -Dfile.encoding=UTF-8
2. Database encoding set correctly.
3. Issue does not persist when the PDF Conversion Sandbox process for Confluence Data Center is disabled.
• -Dpdf.export.sandbox.disable=true

# Cause

1. The PDF conversion process is Confluence Data Center is controlled by a separate sandbox process, even on a DC instance running on a single node.
2. In some cases this process might not pick up the encoding that is set for Confluence, and we will need to manually parse these valus.

# Solution

1. Add the following parameter to the setenv.sh file for each node and restart Confluence.
• CATALINA_OPTS="-Dconversion.sandbox.java.options=-Xmx512m,-Xss2m,-Dsun.jnu.encoding=UTF-8,-Dfile.encoding=UTF-8 \${CATALINA_OPTS}"