JSONKit

What it does

JSONKit is a free collection of 47 browser-based JSON tools built for developers. Format, validate, minify, diff, and convert JSON to CSV, YAML, XML, TypeScript, Go, Python, Kotlin and more - all running locally in your browser. No upload. No login. No data sent anywhere. Works offline after first visit. Paste real API keys and production tokens without worry — we literally cannot see them.

50+ free online JSON tools — format, validate, minify, diff, and convert JSON to YAML, CSV, XML, TypeScript and more. Fast, accurate, and 100% private: everything runs in your browser.

Format, validate, convert and diff JSON. Instant, accurate and 100% private — every byte stays in your browser, never on a server. Paste any JSON or pick a real-world sample. Instantly get syntax highlighting, type distribution, structure shape, and click any line to copy its JSONPath. Zero uploads — runs entirely in your browser. Format, validate, diff, convert formats, generate typed code, and more — 83 + tools, all free, all browser-side, zero uploads. Beautify and format JSON with configurable indentation and syntax highlighting. Catch syntax errors instantly with exact line and column numbers. Compare two JSON objects side-by-side and highlight every change. Fix broken JSON — trailing…from jsonkit.in

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