Is this a TypeScript compiler?

It transpiles TypeScript to JavaScript locally (types are stripped) and runs the result in your browser. Full static type-checking like tsc --noEmit is not performed — the focus is on quick execution.

Does this type-check my TypeScript?

This tool transpiles TypeScript (strips types) and runs the resulting JavaScript. Full static type-checking like tsc --noEmit is not performed — focus is on quick execution.

Is my TypeScript uploaded?

No. Transpilation and execution happen entirely in your browser.

JSX syntax is transpiled, but there is no React runtime loaded. JSX playgrounds are best for syntax experiments, not full React apps.

How is this different from the JavaScript Playground?

This page defaults to TypeScript and locks the language. The JavaScript Playground lets you toggle between JS and TS on one page.

TypeScript Playground

Transpile and run TypeScript snippets in your browser

Run TypeScript online — use it as a TS compiler and tester. Transpile interfaces, generics, and async code locally, then execute in your browser with instant console output. Nothing uploads to a server.

Also known as: typescript compiler · ts compiler · typescript tester · run typescript online · ts playground online · typescript executor

100% In-Browser & Private — your data never leaves this device

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How to use the TypeScript Playground

Paste TypeScript into the editor, or load a sample with interfaces or generics.
PeachTools transpiles TypeScript to JavaScript locally — no type-checker server required.
Press Run or Ctrl+Enter to execute the compiled JavaScript in an isolated worker.
Fix any transpile errors shown before run; runtime errors appear in the Errors tab.

FAQ

Is this a TypeScript compiler?: It transpiles TypeScript to JavaScript locally (types are stripped) and runs the result in your browser. Full static type-checking like tsc --noEmit is not performed — the focus is on quick execution.
Does this type-check my TypeScript?: This tool transpiles TypeScript (strips types) and runs the resulting JavaScript. Full static type-checking like tsc --noEmit is not performed — focus is on quick execution.
Is my TypeScript uploaded?: No. Transpilation and execution happen entirely in your browser.
Can I use JSX?: JSX syntax is transpiled, but there is no React runtime loaded. JSX playgrounds are best for syntax experiments, not full React apps.
How is this different from the JavaScript Playground?: This page defaults to TypeScript and locks the language. The JavaScript Playground lets you toggle between JS and TS on one page.