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MyJSONDiff
macOS
A simple, native JSON diff tool for macOS.
Paste two JSON documents into the panes; the differences are highlighted side by side in real time. Auto-formats, validates, and remembers your last few comparisons. Useful when you need an answer in five seconds and don't want to open a tab.
Features
Side-by-side view
Two synchronized panes with line-level highlighting.
Live diff
Edits on either side re-diff instantly as you type.
Auto-format & validate
Pasted JSON is pretty-printed and validation errors are obvious.
Keyboard friendly
Open, paste, focus, swap — all with shortcuts.
Native performance
Built in SwiftUI. Opens instantly, idles cheaply.
No cloud
Your payloads never leave the app. No telemetry.