- Does this code formatter upload my code to a server?
- No. All formatting runs entirely inside your browser using Prettier's standalone WebAssembly build. Your code is never transmitted to any server, stored, or logged. It is safe to paste proprietary or sensitive code.
- Which programming languages does the formatter support?
- The formatter supports JavaScript, TypeScript, JSX, TSX, JSON, HTML, CSS, SCSS, Less, Markdown, and GraphQL — all powered by Prettier's official parsers.
- What is Prettier and why is it used?
- Prettier is the most widely adopted opinionated code formatter for web development. It enforces a consistent style by parsing your code into an AST and reprinting it with its own rules, eliminating debates over formatting. This tool uses Prettier's standalone browser build so no Node.js installation is required.
- Why does my JSON stay on one line after formatting?
- Prettier keeps code on one line when it fits within the configured print width (default: 80 characters). If your JSON is short enough to fit on one line, Prettier will keep it that way. To force multiline output, reduce the Print Width slider below the length of your input.
- Can I configure the formatting style?
- Yes. The tool exposes the most common Prettier options: print width, tab width, semicolons, single vs double quotes, trailing commas (all / ES5 / none), use tabs instead of spaces, and bracket spacing. Changes take effect when you click Format Code.
- Does the formatter work offline?
- Yes. Once the page has loaded, formatting works without an internet connection because Prettier runs entirely in the browser. The page itself may need to be loaded once while online if it has not been cached by a service worker.
