TypeScript Formatter
Use our TypeScript formatter to clean up indentation and spacing. Paste code, format it instantly, and copy the result for your project.
TypeScript Formatter
SIMILAR TOOLS
What this does
So your TypeScript has lost its shape, maybe after a paste or a hurried edit, and the types and logic have run together. This straightens it out. Paste your code, click Format, and it comes back cleanly indented with consistent spacing, type annotations and all.
How to use it
- Paste your TypeScript into the box.
- Click Format.
- Copy the result.
How it works
This uses Prettier with its TypeScript parser. The important part is that parser: Prettier actually understands TypeScript syntax, so it reads your interfaces, generics, and type annotations as the language constructs they are, rather than treating them as plain text. That means it can reindent and reflow your code without mangling the types. It works entirely in your browser, so your source stays on your own machine.
Why it understands your types
Because Prettier knows TypeScript, it handles the things that trip up a plain JavaScript beautifier. A generic like Map<string, number>, a union type, or a long interface all come out laid out sensibly instead of jumbled. The payoff is the usual one for a formatter: consistent style across a file or a team without anyone arguing about spacing, and clean diffs when you commit.
As with any parser based formatter, it expects the input to be valid TypeScript. If there is a real syntax error in there, Prettier stops and says so rather than producing something half formatted, which is a useful nudge to go and fix the actual problem.
Questions people ask
How is this different from the JavaScript formatter?
This one uses Prettier with a TypeScript parser, so it understands types, interfaces, and generics. A plain JavaScript beautifier does not know about those and can format them awkwardly.
Does it change my types or logic?
No. It only adjusts formatting. Your types, annotations, and logic are left exactly as written.
Why did it refuse to format my code?
Prettier parses the TypeScript, so a genuine syntax error will stop it. Fix the error and it will format cleanly.
Is my source uploaded?
No. The formatting runs in your browser, so nothing you paste is sent away.
References
- Prettier. An opinionated code formatter. https://prettier.io/
- TypeScript. Typed JavaScript at any scale. https://www.typescriptlang.org/
Sugam Baskota is a senior software engineer and Computer Science graduate from UT Arlington, with interests in user scripts, browser extensions, developer tooling, and productivity systems. He spends time building practical utilities and extensions in the kinds of workflows Eon is designed to simplify. At Eon Tools, he reviews useful, password, and developer tools.