Nifty Paste JSON as Code

Turn JSON on your clipboard into types for TypeScript, C#, Go, Rust, Python, Java, Kotlin, Swift, Dart and more.

Maintained. No sign-in. No telemetry. Works in VS Code, Cursor, Windsurf, VSCodium and other editors that use Open VSX.

Features

An order API response pasted as TypeScript interfaces at the end of an API module

A weather API response pasted as Go structs with json tags, with "time" added to the import block

An order response opened as C# classes beside the JSON

Paste JSON as Code (Ctrl+Alt+V, or Cmd+Alt+V on Mac). Copy an API response, press the shortcut in a .ts, .cs, .go or other file, and get matching types at the cursor, in that file's language and indentation. In Go files, needed imports go into the file's import block.
Open JSON as Code. In a JSON file (or with some JSON selected), right-click and pick any language; the types open beside it.
16 targets: TypeScript, TypeScript + Zod, C#, Go, Rust, Python, Java, Kotlin, Swift, Dart, PHP, Ruby, C++, Elm, Flow and JSON Schema.
Smart inference. Nested objects become their own types, arrays are merged, optional fields, dates and maps are detected.
Plain types by default. Turn off nifty.paste-json.justTypes to also get JSON (de)serialisation helpers.
Offline. Everything runs locally with the open-source quicktype engine.
Works in the browser on vscode.dev and github.dev.

Command	Key	What it does
`Nifty: Paste JSON as Code`	`Ctrl+Alt+V`	Paste clipboard JSON as types in the current file's language
`Nifty: Open JSON as Code…`		Generate from the JSON file, selection or clipboard in any language

Setting	Default	What it does
`nifty.paste-json.justTypes`	`true`	Plain types only (no serialisation helpers)
`nifty.paste-json.askForName`	`true`	Ask for the top-level type name

VS Code: search for "Nifty Paste JSON as Code" in the Extensions view, or install from the Visual Studio Marketplace.
Cursor, Windsurf, VSCodium, Kiro, Antigravity: install from Open VSX.

Code generation by quicktype (Apache-2.0).

This extension collects no telemetry, needs no account and makes no network requests.

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