About this tool
Compare two JSON documents with side-by-side highlighting and path-level changes. Runs in your browser against FatBaby's platform (free / zero-credit for this operation).
How to use JSON Diff
- Open the JSON Diff tool and fill in the fields.
- Click Process to run the operation with your FatBaby credits.
- Copy or download the result from the page.
- To automate the same workflow, call the matching REST endpoint with your API key.
Need to automate this?
Use the same workflow programmatically via POST /v1/tools/json-diff.
Related tools
FAQ
Is this free?
Yes — 0 credits. Diffing runs in your browser with highlighted adds/removes.
What does highlighting mean?
Green lines were added on the right, red lines removed from the left. Path changes list every key that differed.
How many credits does this use?
About 0 credits per run (same rate as the public API).