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JSON Formatter & Validator

Format, minify & validate JSON with exact error locations, a tree view, JSONPath queries, convert to CSV/YAML/TS and a two-file compare.

json.fmt
runs in your browser · nothing uploaded

autosaves in this browser

e.g. $.services[*] · $..tech[1] · $.stack[?(@.layer=="front")]

Formatted output appears here Paste JSON on the left, then format, minify or validate — errors show the exact line and column.
$ ls ~/tools

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this tool is hand-coded by a WordPress developer — your site gets the same care. Hire me on Upwork