DATA & DEVELOPER TOOLS
JSON Validator & Diff
Catch a syntax typo, tidy the formatting, or see exactly which paths changed between two versions.
YOUR JSON WORKBENCH
Check it. Compare it. Keep it tidy.
Validate syntax, format a clean copy, or compare two documents by their paths. It all stays in this browser.
Original JSON
Paste or type a document up to 2 MB
Compare with
Optional second JSON document
Documents are parsed in this tab and are never uploaded or saved automatically. This tool checks JSON syntax and structure; it does not validate a separate JSON Schema.
HOW IT WORKS
See the detail without losing the shape.
Objects and arrays are compared by their keys and positions. A JSON diff can show structural changes; it does not decide whether those changes fit your app.
- 1Paste one JSON document
Check syntax and pinpoint a parse error with its line and column.
- 2Format or add a second version
Copy or download the clean, pretty-printed document.
- 3Review changed paths
See additions, removals, and value changes in nested data.