FormatPaste
TypeScript Formatter
Paste TypeScript, format it instantly, and copy clean TS output.
Output
formattedFree TypeScript formatter
Format TypeScript snippets, types, and components online
Use this TypeScript formatter for interfaces, types, generics, React components, copied snippets, and messy code blocks. Paste on the left and copy clean TypeScript from the right.
Format TS syntax
Clean interfaces, type aliases, generics, imports, arrays, objects, and functions.
Great for copied snippets
Remove paste noise and line numbers before formatting TypeScript code.
Fast copy workflow
No landing-page detour: the TypeScript formatter is immediately usable.
How this TypeScript formatter helps
Before and after formatting
Paste compact, copied, or hard-to-read TypeScript into the input pane. FormatPaste cleans common paste artifacts first, then formats the code into readable output that is easier to scan, debug, share, or copy into your editor.
Common TypeScript formatting use cases
Use it for quick snippets from documentation, AI chat output, Stack Overflow answers, config examples, API responses, old files, minified blocks, and code that picked up line numbers or markdown fences while being copied.
Safe paste reminder
FormatPaste is built for speed, but you should avoid pasting passwords, API keys, tokens, private keys, recovery codes, customer data, or other secrets into any online formatter. Use local tools for sensitive code.
TypeScript formatting example
interface User{id:number;email:string;roles?:Role[]}export async function getUser(id:number):Promise<User|null>{const res=await fetch(`/api/users/${id}`);return res.ok?res.json():null}interface User {
id: number;
email: string;
roles?: Role[];
}
export async function getUser(
id: number
): Promise<User | null> {
const res = await fetch(`/api/users/${id}`);
return res.ok ? res.json() : null;
}When to use a TypeScript formatter
Format types and interfaces
Long union types, nested generics, and interfaces with many optional fields are hard to scan on one line. Formatting puts each member on its own line and lines up the structure.
Clean generated TypeScript
Types generated from OpenAPI specs, GraphQL schemas, or JSON samples often come out compressed. Paste them here to get readable types before you commit them.
Share readable snippets
Format a TypeScript snippet before pasting it into a code review, a GitHub issue, or documentation so readers see the shape of the code instead of a wall of text.
Formatting is not type checking
The formatter parses TypeScript syntax and reprints it. Code that is formatted correctly can still have type errors, so keep using the TypeScript compiler for those.
More free online formatters
TypeScript Formatter FAQ
How do I format TypeScript online?
Paste TypeScript into the editor and the formatted output appears automatically.
Can this format TypeScript interfaces?
Yes. It can format interfaces, types, functions, classes, and common TS syntax.
Can it format TSX?
Basic TypeScript formatting is supported; dedicated TSX support can be added as a future page.
Is this TypeScript formatter free?
Yes. It is free for quick formatting.
Does the TypeScript formatter check types?
No. It only formats the code. Type errors such as passing a string where a number is expected are not reported; run tsc or your editor for type checking.
What style does the TypeScript formatter use?
Prettier-style rules: two-space indentation, semicolons, double quotes, and long function signatures wrapped one parameter per line.