JSON Diff

Courtesy of tlrobinson.
This version differs in that it supports null values,
downplays the significance of changed properties with the key key,
and provides links to jump from one change to the next.

JSON Diff

Paste some JSON in each of the text fields. Click "Compare" to see the diff.
Changed portions are displayed in yellow. Additions are displayed in green. Deletions are displayed in red.
It also works as a JSON viewer. Click the disclosure triangles to display/hide portions of the JSON.
Invalid JSON is indicated by the text fields turning red.
Swap the contents of the text areas by clicking "Swap". Clear them by clicking "Clear".

About

JSON Diff is a simple way to visualize and compare JSON.

Known Issues

Diff algorithm not very intelligent when dealing with arrays
Probably doesn't work in IE