Bold Text Generator

Create 𝐛𝐨𝐥𝐝 𝐭𝐞𝐱𝐭 for Facebook, Twitter (X), Instagram, and other social media platforms using Unicode characters.

How This Tool Works
100% Client-Side

Your data never leaves your device. All processing happens locally in your browser. No text is sent to any server, no data is stored, and no cookies track your usage.

Each letter is mapped to its Mathematical Bold Unicode equivalent. These are special Unicode characters (U+1D400 range) that look bold but work in plain text fields.

  • Uses Unicode Mathematical Alphanumeric Symbols block
  • Supports A-Z, a-z, and 0-9 characters
  • Non-alphanumeric characters pass through unchanged
How to verify this yourself

Check your browser's Network tab to see nothing is sent:

  1. Open DevTools: Right-click anywhere on the page → "Inspect" (or press F12)
  2. Go to Network tab: Click "Network" at the top of the DevTools panel
  3. Use the tool: Type or paste text and watch the Network tab
  4. Verify: You'll see no requests to external servers — all processing is local

Works in Chrome, Firefox, Safari, and Edge.

About Bold Text

This isn't standard HTML bold tags. We convert your text into Mathematical Alphanumeric Symbols (Unicode) that look bold everywhere.