How Unicode Math Symbols Power Fancy Text Generators (Built with SvelteKit)

Gaming profiles and Instagram bios with bold or cursive text are everywhere now. It's easy to assume these use custom fonts, but the method is simpler than you'd think — it's all Unicode characters, not fancy typography. I recently released PrettyTxt , a free tool for creating this "fancy" text, and wanted to share how it actually works under the hood. The Unicode trick nobody talks about Unicode offers a dedicated block of Mathematical Alphanumeric Symbols (U+1D400 – U+1D7FF) with distinctive visual styles. These code points — originally designed for mathematical notation — form complete alphabets in bold, italic, script, fraktur, double-struck, monospace, and several other variations. The key takeaway: these characters look like styled Latin letters, but they're actually distinct code points. Writing "Hello" in bold Unicode doesn't apply formatting — it produces 𝐇𝐞𝐥𝐥𝐨, which consists of five individual characters. Standard Unicode support ensures they work across platforms — Instagra