TypeScript Beautifier

Paste compact or minified TypeScript and format it with proper indentation and consistent spacing.

Last updated: May 29, 2026

Indent:Preserve blank linesFinal newline

Messy or Minified TypeScript

2 lines, 242 B

Beautified TypeScript

interface User {
  id:number;
  name:string;
  email:string
}

class UserService {
  private users:User[]=[];
  add(user:User):void {
    this.users.push(user)
  }
  find(id:number):User|undefined {
    return this.users.find(u=>u.id===id)
  }
  getAll():User[] {
    return[...this.users]
  }
}

18 lines, 295 B

Input: 2 linesOutput: 18 linesSize: 295 B

Client-Side Processing

Input Data Stays on Device

Instant Local Execution

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What is TypeScript Beautifier?

TypeScript Beautifier reformats TypeScript source code — including interfaces, classes, generics, enums, decorators, and async/await patterns — so it is easy to read. It uses the same brace-based formatting engine as the JavaScript Beautifier, handling C-style braces and semicolons while respecting strings and comments. It is intentionally lightweight and focuses on indentation and line breaks rather than full AST parsing.

How to Use TypeScript Beautifier

Paste TypeScript source code.

Choose indentation style.

Click Format.

Review the beautified output.

Copy or download the .ts file.

Common Use Cases

Expanding minified TypeScript library code for debugging.
Normalizing indentation after pasting snippets from different sources.
Formatting compact TypeScript examples before adding to documentation.
Tidying up generated TypeScript from build tools or code generators.

Example Input and Output

A compact TypeScript interface and class are expanded with proper indentation.

Compact TypeScript

interface Config{host:string;port:number}function connect(cfg:Config):void{console.log(cfg.host)}

Beautified TypeScript

interface Config {
  host: string;
  port: number
}
function connect(cfg: Config): void {
  console.log(cfg.host)
}

Privacy

TypeScript code is formatted locally in the browser and is not uploaded.

Frequently Asked Questions

Does this validate TypeScript?

No. It formats text for readability only. Use tsc or your IDE to type-check your code.

Will it rewrite generics like Array<string>?

Generic type parameters are preserved as written. The formatter handles angle brackets that appear in less-than comparisons and generics correctly in most cases.

Can it format .tsx files?

For JSX in TypeScript (.tsx), use the JSX Formatter tool which handles JSX element syntax.

Is my code uploaded anywhere?

No. Formatting runs entirely in your browser.