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Diagram proxy

doc/administration/integration/diagram_proxy.md

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Use the diagram proxy to prevent browsers from sending diagram content to external services like Kroki or PlantUML. GitLab fetches diagrams on the user's behalf and serves them through a one-time URL that expires after use.

Turn on the diagram proxy

Turn on the diagram proxy separately for the Kroki and PlantUML integrations. You can turn on the diagram proxy for Kroki, PlantUML, or both.

Prerequisites:

  • Administrator access.

To turn on the diagram proxy:

  1. In the upper-right corner, select Admin.
  2. Select Settings > General.
  3. Expand Kroki or PlantUML.
  4. Select the Proxy Kroki diagrams through GitLab or Proxy PlantUML diagrams through GitLab checkbox.
  5. Select Save changes.