
jsonfmt.dev
Developer ToolsFormat, validate, diff, convert JSON. 100% client-side.
About
Effortlessly format, validate, minify, and beautify JSON data directly in your browser. Features include a tree view, diff tool, JSON to YAML/CSV/XML conversion, JWT decoder, and repair functionality. It's free to use, requires no registration, and functions even without an internet connection.
Launched
March 10, 2026Week 1
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