# JS2TS — JavaScript to TypeScript Converter

> JS2TS is a free online AI-powered developer toolkit with 22+ converters: JavaScript to TypeScript, JSON to TypeScript interfaces, CSS to Tailwind CSS, JSX to TSX, TSX to JSX, JS to TSX, TypeScript to JSON, HTML to Tailwind, HTML to JSX, CSS to JSON, JavaScript objects to JSON, TypeScript to JavaScript, JSON to Zod schemas, Tailwind to CSS, YAML to JSON, YAML to TypeScript, CSV to JSON, XML to JSON, OpenAPI to TypeScript, GraphQL to TypeScript, Prisma to Zod, and JSON to JSON Schema. Built by 011BQ. Core converters work without sign-up.

## Tools (js2ts.com)

- [JavaScript to TypeScript](https://js2ts.com/): Paste JavaScript and receive fully typed TypeScript powered by AI—function signatures, interfaces, generics, and inference.
- [JSON to TypeScript](https://js2ts.com/json-to-typescript): Turn JSON objects or API responses into TypeScript interfaces; nested objects and arrays supported.
- [CSS to Tailwind CSS](https://js2ts.com/css-to-tailwind): Map CSS rules to Tailwind utility classes; production-oriented output.
- [CSS to JSON](https://js2ts.com/css-to-json): Export stylesheets as structured JSON for design tokens and programmatic use.
- [JavaScript object to JSON](https://js2ts.com/js-object-to-json): Serialize JS object literals (including loose quoting) to valid JSON.
- [HTML to JSX](https://js2ts.com/html-to-jsx): Convert HTML to React JSX—className, events, self-closing tags.
- [HTML to Tailwind CSS](https://js2ts.com/html-to-tailwind): Convert HTML inline styles to Tailwind utility classes.
- [TypeScript to JavaScript](https://js2ts.com/typescript-to-javascript): Strip types, interfaces, generics, and modifiers to plain JavaScript.
- [TypeScript to JSON](https://js2ts.com/typescript-to-json): Generate example JSON objects from TypeScript interfaces for mocking and testing.
- [JSON to Zod schema](https://js2ts.com/json-to-zod): Generate Zod schemas and inferred types from JSON.
- [Tailwind CSS to CSS](https://js2ts.com/tailwind-to-css): Expand Tailwind class strings to standard CSS, including responsive and variant patterns.
- [JSX to TSX](https://js2ts.com/jsx-to-tsx): Add TypeScript types, interfaces, and event handler types to React JSX components.
- [TSX to JSX](https://js2ts.com/tsx-to-jsx): Strip TypeScript from React TSX components to produce clean JSX.
- [JS to TSX](https://js2ts.com/js-to-tsx): Convert plain JavaScript React components to fully typed TypeScript TSX.
- [YAML to JSON](https://js2ts.com/yaml-to-json): Parse YAML configs and manifests to valid JSON.
- [YAML to TypeScript](https://js2ts.com/yaml-to-typescript): Infer TypeScript interfaces from YAML data structures.
- [CSV to JSON](https://js2ts.com/csv-to-json): Convert CSV rows to a JSON array of objects.
- [XML to JSON](https://js2ts.com/xml-to-json): Parse XML documents and attributes to structured JSON.
- [OpenAPI to TypeScript](https://js2ts.com/openapi-to-typescript): Generate TypeScript interfaces from OpenAPI/Swagger schemas.
- [GraphQL to TypeScript](https://js2ts.com/graphql-to-typescript): Convert GraphQL SDL types and inputs to TypeScript interfaces.
- [Prisma to Zod](https://js2ts.com/prisma-to-zod): Generate Zod validation schemas from Prisma model definitions.
- [JSON to JSON Schema](https://js2ts.com/json-to-json-schema): Generate JSON Schema draft-07 definitions from JSON objects.

## Related 011BQ products (external)

These are separate sites from the same builder; not hosted on js2ts.com.

- [Video to Thumbnail](https://www.videotothumbnail.com/): Generate thumbnails from video.
- [Securenote](https://www.securenote.co/): Secure note sharing.
- [Teenyfy](https://www.teenyfy.com/): URL shortening and link tools.

## Site & syndication

- [Contact](https://js2ts.com/contact-us)
- [Blog RSS](https://js2ts.com/rss.xml)
- [XML sitemap](https://js2ts.com/sitemap.xml)
- [This file (llms.txt)](https://js2ts.com/llms.txt)

## Policies

- [Privacy policy](https://js2ts.com/privacy-policy)
- [Cookie policy](https://js2ts.com/cookie-policy)
- [Terms & conditions](https://js2ts.com/terms-n-conditions)

## Blog

- [JS2TS Blog](https://js2ts.com/blog): Articles on TypeScript, JSON, CSS tooling, and front-end development. Primary author: Shashank Jain.

## About

JS2TS is a free toolkit for front-end and full-stack developers. Core conversions use AI (OpenAI). The site is operated by 011BQ.

## Key facts

- Core tools are free; no account required for converters
- Conversions use OpenAI language models
- Supports large inputs and complex nested structures
- Canonical site: https://js2ts.com

## Licensing

Blog content is copyright 2026 011BQ. Cite with attribution linking to the original URL.