Free online code formatters
Paste, prettify, done. Nothing is uploaded — every formatter below runs entirely in your browser.
Pick a language to clean up inconsistent indentation, spacing, and quote style. JSON, JavaScript, TypeScript, CSS, and YAML run on Prettier; C and C++ run on clang-format compiled to WebAssembly — the same engines used in real development toolchains, not a custom approximation.
JSON
Format & validate JSON — Prettier
JavaScript
Beautify JS — Prettier
TypeScript
Format .ts code — Prettier
CSS
Beautify CSS — Prettier
YAML
Format & validate YAML — Prettier
C
Format C — clang-format (WASM)
C++
Format C++ — clang-format (WASM)
VBScript
Re-indent — best-effort, no real parser exists
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