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n8n Workflow Checker

Free n8n Workflow Validator and Checker

Paste an exported n8n workflow JSON and check whether it is structurally ready to import, review, and test.

Validate n8n workflow JSON

Paste a workflow export to check JSON validity, node structure, connections, credentials, and likely activation issues.

Runs in your browser
JSON and structure checks
Catch invalid JSON, missing nodes, missing workflow connections, and duplicate node names before import.
Connection validation
Find broken source or target references that often cause n8n workflows to import but fail at runtime.
Credential hygiene
Flag API, database, AI, and integration nodes that may need credentials after the workflow is imported.

n8n workflow validator FAQ

What does this n8n workflow validator check?
It checks exported n8n workflow JSON for parse errors, node structure, duplicate names, missing connections, broken connection targets, disabled nodes, and likely credential requirements.
Does this tool upload my workflow JSON?
No. The validator runs in your browser. Your workflow JSON is not sent to the server by this page.
Can it automatically fix n8n workflows?
No. It provides validation findings and debugging hints. You should still import the workflow into a test n8n workspace and confirm credentials before activating it.