JSON Diff

When debugging APIs or reviewing configuration changes, you often need to compare two JSON structures to understand what changed. This diff tool performs a deep comparison of two JSON inputs and highlights the differences with color coding.

Paste your original JSON on the left and the modified JSON on the right. The comparison is recursive, meaning it traverses nested objects and arrays to find changes at any depth. Green highlighting shows values that were added in the new version. Red shows values that were removed. Yellow indicates values that changed between versions.

The summary at the top shows the count of additions, removals, and changes, giving you a quick overview before diving into details. This is invaluable for reviewing API response changes, debugging configuration drift, understanding what changed between deployments, or validating data migrations. The comparison runs entirely in your browser, so sensitive data never leaves your device.