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YOUR LOCAL TOOLKIT

Tools

Diagnose, build and compare in the same workspace.

Workflow Checker

Diagnose

Inspect connections, node IDs and model requirements.

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Log Inspector

Diagnose

Understand the relevant error and your next checks.

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Studio

Build

Build, connect and edit your local workflow.

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Workflow Compare

Compare

Compare nodes, connections and settings.

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Casebook

Utilities

Keep evidence, checks and outcomes on this device.

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JSON Formatter

Utilities

Validate syntax and format a reviewed copy.

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PNG Metadata

Utilities

Read embedded workflow and prompt information.

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Log Redactor

Utilities

Remove common sensitive patterns before sharing.

Open →

Workflow Starters

Build

Start with a template and review its model requirements.

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Free · Local · No signup

Extra local utilities

Prepare a readable JSON file, compare two exports, or remove common sensitive patterns from an error log. Your input stays in your browser.

JSON validator & formatter

Check JSON syntax and make a workflow export easier to read. This changes formatting only; it does not repair a graph. Parsing collapses duplicate object keys, so keep the original file and use the workflow checker for structural analysis.

Workflow comparison

See added, removed or modified node IDs between two UI or API exports. Objects are compared without relying on property order; array order still matters. Changes describe file differences, not better render quality. UI exports also report changed links. Duplicate node IDs are rejected because a comparison would be ambiguous.

Error log redactor

Replace email addresses, common Authorization bearer values, API-key/password assignments, token-like strings and user folders in Windows or Unix paths. This is a best-effort pattern filter: it cannot detect every secret. Review the output manually before sharing; other names, addresses, identifiers and private data may remain.

A practical troubleshooting sequence

  1. Keep a backup of your original workflow.
  2. Use the workflow checker to inspect links and node IDs.
  3. Compare exports after editing to spot unintended changes.
  4. Review and redact the relevant log excerpt before requesting help.

Understand workflow JSON · Troubleshoot a stuck queue

Find your next step

Error library · Workflow starters · JSON formatter · PNG metadata · Log redactor

Follow a specific diagnostic checklist, inspect a local copy and verify the result in your own ComfyUI.

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