Workflow JSON formatter

What this tool does

It parses JSON and reprints it. If a nodes array exists, the count is noted. There is no schema for every custom node.

How to use it

1. Paste workflow JSON.
2. Fix parse errors.
3. Download the formatted file.

Privacy

This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.

ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: UTF-8. Limit: 5 MB (5.00 MB).

Limitations

• Valid JSON can still be an invalid ComfyUI graph.
• Custom node types are not resolved.

Example

{"nodes":[{"id":1,"type":"CheckpointLoaderSimple"}]}

Formatted JSON with a note that 1 node is listed

Troubleshooting

Unexpected end of JSON

The export was truncated. Copy from the PNG extractor instead of a partial log.

FAQ

Is this an official ComfyUI validator?

No. It is a JSON check plus a node count. Load the file in ComfyUI for a real import test.

Can it strip seeds?

Not automatically. Edit the JSON yourself after formatting.

Why allow 5 MB?

Large graphs with embedded images in widgets get bulky. The cap still exists so a phone does not fall over.

Does formatting change node IDs?

No. It only changes whitespace.