JSON Formatter & Validator

Paste JSON to validate, pretty-print, and inspect structural errors.

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    About this diff checker

    Paste your original text, add a line containing only ===, then paste the changed version below it. The tool compares both line by line and shows additions in teal and removals in red, so you can spot exactly what changed.

    Useful for comparing two drafts, two versions of a config file, or any text where you need to know precisely what was added, removed, or kept the same.

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