Why this tool is useful
Audit configuration or API payload changes without exposing either document to a third-party comparison service.
Developer & Data · runs locally
Private JSON Difference Viewer
Compare two JSON values by path and report additions, removals and changes locally with deterministic ordering.
Ready. Your working data stays in this browser.
How it works
The browser parses both documents, walks their object and array paths, and reports a bounded list of structural value differences.
Practical example
Compare a queued job payload with a ready payload to see the exact status and size changes.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.