UniStyle

Convert plain text into 22 Unicode styles for Discord, Notion, X, Slack, and anywhere Unicode renders. Free. No signup, no tracking, no server.

Quick start

1. Install UniStyle from the Chrome Web Store
2. Pin it to your toolbar (puzzle icon → pin)
3. Select text on any page → right-click → Format with UniStyle (or press Ctrl+Shift+Y)

Prefer no install? The full tool runs in your browser at unistyle.io - installable as a PWA on desktop and Android, works offline.

What it does

UniStyle generates real Unicode characters that look bold, italic, scripted, monospace, and more. Because the output is real Unicode (not Markdown), the formatting travels with the text - paste it into Discord usernames, X bios, Slack messages, LinkedIn headlines, anywhere a text field renders Unicode.

Type:

Hello World

Get back:

𝐇𝐞𝐥𝐥𝐨 𝐖𝐨𝐫𝐥𝐝     ← bold
𝐻𝑒𝑙𝑙𝑜 𝑊𝑜𝑟𝑙𝑑     ← italic
𝓗𝓮𝓵𝓵𝓸 𝓦𝓸𝓻𝓵𝓭     ← script
Ｈｅｌｌｏ Ｗｏｒｌｄ     ← fullwidth (vaporwave)

...and 18 more.

Features

• 22 Unicode styles: bold, italic, bold italic, sans-serif bold, sans-serif italic, sans-serif bold italic, underline, strikethrough, monospace, script, fraktur, double-struck, fullwidth, small caps, bubble, upside down, reverse, alternating case, zalgo, subscript, superscript, regional indicator (country flag codes)
• Style combiner: stack a modifier (strikethrough, underline, overline, reverse) on any base style
• Favorites: pin your most-used styles
• History: recent transformations are saved locally
• Special characters row: quick-insert for em dashes, ellipsis, smart quotes, etc.
• Cleanup transforms: Format Sentences, CAPS, lowercase, Title Case, Strip Unicode
• Keyboard shortcuts (extension): Ctrl+Shift+Y opens popup, Ctrl+Shift+U transforms selected text with last-used style, Ctrl+Shift+F opens inline panel
• Right-click context menu (extension): "Format with UniStyle" on any selected text
• PWA installable (web): works offline once installed

Who it's for

Discord server owners styling channel names and announcements. Creators dressing up X bios and LinkedIn headlines. Notion and Slack users who want emphasis where the platform doesn't allow formatting - usernames, statuses, titles. Anyone who's ever wanted bold text in a field that only accepts plain text.

How it works

Plain text uses standard Unicode (U+0041 = "A"). UniStyle maps each character to its equivalent in another Unicode block - "Mathematical Alphanumeric Symbols" (U+1D400+) for bold/italic/script/fraktur, "Halfwidth and Fullwidth Forms" (U+FF21+) for fullwidth, "Combining Diacritical Marks" for zalgo, etc. The output is real Unicode that displays styled glyphs anywhere a font renders those code points.

This is different from Markdown formatting (which only works inside platforms that parse it). UniStyle output works in usernames, bios, status fields, third-party clients, and anywhere plain text is accepted.

FAQ

Is it really free? Yes. MIT licensed, no account, no ads, no tracking. Ko-fi exists if you want to say thanks - the tool stays free either way.

Why do some styles show empty boxes (□)? Font coverage varies. Some platforms and older devices don't render every Unicode block. Each style in UniStyle has a compatibility tip showing where it works (Discord, X, Notion, Slack).

Will styled text hurt accessibility? It can. Screen readers often read mathematical alphanumeric characters letter-by-letter or skip them. Use styled text for short decorative strings (names, headers), not body text.

What's the difference between the extension and the web app? Same engine. The extension adds the right-click menu, keyboard shortcuts, and an inline panel on any page. The web app is the full-page tool and installs as an offline PWA.

Is my text sent anywhere? No. Conversion happens locally in JavaScript. Nothing is sent to a server, saved to a database, or logged. Full policy: unistyle.io/privacy

Local development

git clone https://github.com/buildwithbaker/unistyle.git
cd unistyle
# Serve over HTTP for the service worker to register correctly:
python3 -m http.server 8000
# Then open http://localhost:8000 in a browser

No build step. No dependencies. Edit index.html, engine.js, sw.js directly. The Chrome extension source lives in extension/; the shared engine.js is kept byte-identical between the web and extension copies.

Contributing

Issues and pull requests welcome. For larger changes please open an issue first to discuss.

Internals: see docs/internal/architecture.md for the full architecture reference - engine internals, the STYLES model, extension architecture, and gotchas.

When adding a new Unicode style:

1. Add the style definition to engine.js in the STYLES array
2. Include key, label, compat (Discord/Twitter/Notion/Slack support), tip (tooltip explaining the style)
3. Implement the transform function fn that maps input chars to the new Unicode range
4. For styles with partial alphabet coverage, document the gap in the tip

Support

If UniStyle saved you time, a coffee on Ko-fi keeps the builds coming - and a ⭐ on this repo helps other people find it.

License

MIT - see LICENSE for details.

Author

Built by Adam Baker - part of Build with Baker, a small-tool maker brand for things that make the web a little less annoying.