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JSON Compare

Two JSON files side by side. Extra keys stay visible.

Added (right extra) Removed (left extra) Changed

About JSON Compare

Left and right each take one JSON file. Keys that exist only on one side still show; they just pick up a colour so you can see what was added or dropped.

Each side has its own search. Collapse closes a block the way an editor would — not the whole file into one line. Cap is 20,000 lines per side.

For a single file, open JSON Formatter. For plain text, use Text Compare.