Find and Replace

Quickly swap words or phrases in large blocks of text. Supports case-sensitive matching and handles up to 100,000+ characters instantly.

0 matches found
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.

Search patterns are converted to regular expressions with global flag for replace-all functionality. Special regex characters in your search term are escaped to match literally.

  • Case-sensitive toggle switches regex 'i' flag on/off
  • Whole-word matching wraps pattern in \b word boundaries
  • Match counter updates in real-time as you type
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.

Large Text Support

This tool is optimized for performance. It processes text entirely in your browser memory, making it capable of handling extremely large documents (100k+ characters) without any server lag or privacy risks.