ComfyUI JSON formatter
Format valid JSON locally; malformed JSON is reported rather than silently repaired.
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How to use this local tool
- Keep your original file. Supply a copy using the input above.
- Review the result and any error message before using it.
- Open the workflow checker to inspect graph references, or keep a recovery brief in Casebook.
What this tool checks
The formatter parses JSON and adds indentation. It does not invent missing nodes, repair invalid syntax, or validate model compatibility. Duplicate JSON object keys follow standard JSON parsing behavior, so preserve your original.
Check exported graph ↗ · Record next steps ↗
Your next step
Use the Nodi Quick tour to learn this page. Start with an example, review the result and export your own copy.
ComfyUI workflow tutorial · ComfyUI Workflow Studio · All local tools · Error troubleshooting guides