API JSON Workbench
Choose a tool to format, compare, generate types, infer schema, or create mock data from JSON. All processing stays in your browser.
JSON FormatterFormat, validate, minify, search, and inspect JSON or JSON5 with a live structure tree. Your data stays in your browser.JSON DiffCompare JSON API responses in two editable panes with live line and inline differences, or inspect structural changes. Runs locally in your browser.JSON to TypeScriptGenerate TypeScript interfaces from JSON API response samples directly in your browser.JSON Schema GeneratorInfer JSON Schema from sample JSON API payloads locally in your browser. Start with a JSON sample to generate a schema.JSON Mock Data GeneratorGenerate mock JSON data from a sample API payload. Create predictable example values and arrays matching your sample structure, locally in your browser.
Saved snapshots
Snapshots are saved only when you choose Save. They stay in this browser and are never uploaded.
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