JSON & Data

JSON to TypeScript

Generate TypeScript interfaces or types from JSON, with nested and optional inference.

Runs entirely in your browser: nothing you paste or upload is sent to a server.

Related: typescript, ts, interface, type, generate, json, types, quicktype, zod

More json & data

• JSON Formatter — Beautify, minify, validate and sort JSON with precise error locations.
• JSON Tree Viewer — Explore JSON as a collapsible tree; search keys and values, copy paths.
• JSON to CSV — Convert arrays of objects into CSV with configurable flattening and delimiters.
• CSV to JSON — Parse CSV or TSV into JSON with header mapping and type inference.
• CSV Viewer — Open large CSV/TSV files as a fast, sortable, filterable table.
• JSON ⇄ YAML — Convert between JSON and YAML in either direction with validation.
• JSON ⇄ XML — Convert between JSON and XML with documented attribute and text-node conventions.
• JSONPath Explorer — Query JSON with JSONPath expressions and copy the matching paths and values.