JSON Schema Diff & Compare
Paste two JSON Schemas to see highlighted line-by-line differences, a change summary, and a similarity percentage. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
two schemas with different properties
Example Output
changed properties & required
How to Use
- 1Paste the first JSON Schemas (A) in the left box and the second (B) in the right box.
- 2Adjust the options if needed (ignore case, whitespace, or empty lines).
- 3Click Compare (or press Ctrl+Enter).
- 4See the highlighted differences, a summary of how many changes there are, and the similarity percentage. Switch between side-by-side / unified / inline views.
About JSON Schema Diff & Compare
JSON Schema Diff & Compare compares two JSON Schema documents structurally to reveal changes in types, properties, required fields, or constraints. Useful when an API evolves and you want to know what changed between versions.
Each change is shown with its exact path, making it easy to spot new fields or potentially breaking changes.
FAQ
What is the difference between "diff" and "compare"?
Both are done by the same tool. "Diff" highlights the lines/parts that changed (added/removed), while "compare" shows how similar the two inputs are (similarity percentage + summary). You get both at once here.
Is my data sent to a server?
No. The entire comparison is computed in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.