# Syntax highlighter Paste code and convert to highlighted HTML locally in your browser. Each language is its own small component — TypeScript’s is
of WebAssembly
— chained with an HTML escaper and a Night Owl stylesheet.
Language
TypeScript / JavaScript / JSX
HTML / XML
CSS
Go
Swift
Ruby
Zig
C
Bash / shell
WebAssembly text
Enter code
// Highlighted locally, in ~9 KB of wasm. type Size = { bytes: number }; export function label({ bytes }: Size): string { return `${(bytes / 1000).toFixed(2)} kB`; }
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Output HTML
Copy output HTML
The output embeds its own `