Pinned data detected in n8n
- Feb 13
- 1 min read
What this means (non-technical)
Pinned data stores execution results inside the workflow for testing. If pinned data is left in place, it increases the workflow file size and may contain real data.
That data becomes part of the workflow export.
What usually goes wrong
When pinned data remains:
Workflow JSON files become larger.
Real API responses or personal data may be embedded.
Sharing the workflow exposes more than intended.
Version control repositories store unnecessary data.
It is easy to forget pinned results after testing.
Later, when exporting or sharing, the extra data travels with the workflow.
When this becomes urgent
This becomes urgent when:
Workflows are shared externally.
Sensitive data was used during testing.
File sizes begin growing unexpectedly.
Compliance requirements apply.
The more sensitive the test data, the greater the exposure risk.
Detect issues in your n8n workflows
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Definitions
Pinned data: Saved execution output attached to a node for testing.
Workflow export: A JSON file containing the workflow’s configuration and, if present, pinned data.
Disclaimer
This article highlights common patterns and risks seen in real-world n8n workflows. It’s meant to help you build more confidently and avoid surprises as your automation grows. Behavior can vary depending on your setup, version, and configuration.