Tools / Text Diff Checker

Text Diff Checker

Compare two texts side by side and highlight differences. See additions, deletions, and unchanged lines with a clear visual diff.

8,500 AI Tokens Used
Feb 6, 2026 Created
textdeveloper
Categories
Added lines
Removed lines
Unchanged lines

Line-by-line comparison using the Longest Common Subsequence algorithm. All processing happens locally in your browser.

How This Tool Was Built

This tool was created entirely by AI. Here's the exact prompt used to generate it:

Prompt Used 
Create a Text Diff Checker tool with these features:

1. Two textareas side by side for Original and Modified text
2. Compare button that highlights differences
3. Show additions (green), deletions (red), and unchanged lines
4. Line-by-line comparison using longest common subsequence algorithm
5. Show stats: lines added, removed, unchanged
6. Clear button to reset

Make it clean with green as the accent color.
AI
Claude AI Model
#
8,500 Tokens Used
100%
AI-Generated Code Origin