TypeScript to JavaScript Converter

Convert TypeScript to plain JavaScript instantly. Strips type annotations, interfaces, enums, generics, and access modifiers. Works entirely in your browser.

100% client-side. Your data never leaves your browser.

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Fast & Accurate

Instantly converts TypeScript to clean JavaScript. Handles interfaces, enums, generics, decorators, access modifiers, and type assertions.

Configurable Output

Preserve or strip comments, convert enums to JS objects, remove access modifiers, and handle import type statements.

100% Private

All processing happens in your browser. Your code never leaves your device, completely secure for proprietary codebases.

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Frequently Asked Questions

How do I convert TypeScript to JavaScript?
Paste your TypeScript code into the input field or upload a .ts/.tsx file. Click "Convert to JavaScript" and the tool instantly strips all type annotations, interfaces, enums, and other TypeScript-specific syntax, producing clean JavaScript output.
Which TypeScript features are supported?
The converter handles type annotations, interfaces, type aliases, enums (converted to plain objects), generics, access modifiers (public/private/protected), readonly, as-assertions, non-null assertions, import type statements, declare blocks, and abstract classes.
Is my code secure?
Absolutely. All conversion happens locally in your browser using JavaScript. Your code is never uploaded to any server, ensuring complete privacy and security for proprietary or sensitive codebases.
What exactly gets removed from TypeScript code?
Interface and type alias declarations are removed entirely. Type annotations on variables, parameters, and return types are stripped. Enums are converted to plain JavaScript objects. Access modifiers (public, private, protected), readonly, as-type assertions, non-null assertions (!), and import type statements are all removed.
Can I preserve comments in the output?
Yes! Comments are preserved by default. Uncheck "Preserve comments" if you want a clean output without any comments. Both single-line (//) and multi-line (/* */) comments are handled correctly.