# Postman Playground

> Free, in-browser developer tools from Postman — convert, generate, calculate and check without signing in. Part of the Postman API platform.

## Tools

- [JSON to TypeScript types](https://www.postman.com/playground/json-to-types): Paste a JSON sample and get typed interfaces instantly, in your browser, nothing uploaded. Learn more: [API schema docs](https://learning.postman.com/docs/design-apis/specifications/overview/).
- [cURL to code](https://www.postman.com/playground/curl-to-code): Paste a cURL command and get the equivalent request code in your language. Learn more: [Import cURL docs](https://learning.postman.com/docs/getting-started/importing-and-exporting/importing-data/).
- [RPS calculator](https://www.postman.com/playground/rps-calculator): Plan a load test before you run one. Learn more: [Performance testing docs](https://learning.postman.com/docs/collections/performance-testing/testing-api-performance/).
- [Website speed checker](https://www.postman.com/playground/site-speed-checker): Check your response time and time to first byte in seconds. Learn more: [Monitors docs](https://learning.postman.com/docs/monitoring-your-api/intro-monitors/).
- [Is it up?](https://www.postman.com/playground/is-it-up): Check whether any site or API is responding, in seconds. Learn more: [Monitors docs](https://learning.postman.com/docs/monitoring-your-api/intro-monitors/).
- [API request](https://www.postman.com/playground/api-health-check): Send a request to any API endpoint and see the response. Learn more: [Mock Servers docs](https://learning.postman.com/docs/design-apis/mock-servers/overview/).
- [Test data generator](https://www.postman.com/playground/test-data-generator): Generate realistic, reproducible sample data and export it as JSON or CSV, in your browser, nothing uploaded. Learn more: [Dynamic variables docs](https://learning.postman.com/docs/tests-and-scripts/write-scripts/variables-list/).
- [OpenAPI visualizer and linter](https://www.postman.com/playground/spechub-visualizer-and-linter): Write, preview and lint an OpenAPI definition. Learn more: [OpenAPI docs](https://learning.postman.com/docs/design-apis/specifications/overview/).

## About

- [Postman](https://www.postman.com/): The API platform for designing, testing, documenting and monitoring APIs.
- [Postman Playground](https://www.postman.com/playground): Index of every tool listed above.