TypeScript Formatter
Format and indent TypeScript code into a clean, readable structure directly in your browser.
This tool runs entirely in your browser. Your files are never uploaded to a server.
type User= {
name:string;
age:number
};
const user:User= {
name:'Ada',age:36
};What this formatter does
Adds line breaks after opening braces, closing braces, and semicolons, using two spaces per brace level — treating interfaces, type literals, classes, and function bodies the same way, since they're all just brace-delimited blocks to this formatter. Ordinary quoted strings, template literals, escapes, and recognized line or block comments are kept while other whitespace is reduced.
How to use it
Paste TypeScript and inspect the result that updates immediately. Copy the output or use Reset to clear the editor; Reset does not restore the sample.
Formatting behavior
The same brace-and-semicolon splitting applies whether the block is a function body, a class, an interface, or an object type literal — each { opens a new indented line and each ; ends a line. Generic type parameters like <T> and angle-bracket syntax are passed through as plain characters, since the formatter doesn't parse types.
Important limitation
This is a character-based brace formatter, not a TypeScript parser, type checker, or standards-aware printer. It doesn't understand generics, decorators, type annotations, union/intersection types, or ambient declarations as distinct constructs — it also doesn't understand regular-expression literals or automatic semicolon insertion, and it doesn't report unmatched braces or invalid code. Regex quantifier braces and line-sensitive statements can therefore be changed incorrectly.
Safe workflow
Keep the original and run your project's real formatter (like Prettier), the TypeScript compiler, and your test suite before relying on the output in production — this tool only rearranges layout, it doesn't verify the code still type-checks.
Privacy
Formatting happens locally in your browser and pasted code is not uploaded.
Frequently Asked Questions
- What does the TypeScript Formatter do?
- Format and indent TypeScript code into a clean, readable structure directly in your browser.
- Does this TypeScript tool change program behavior?
- It only changes layout or removable whitespace. Review minified output before production use when code relies on unusual syntax.
- Is my code uploaded?
- Processing is local and your code is never uploaded.