Free online diff checker that compares two texts side by side and highlights differences. Shows additions in green and removals in red. Uses LCS algorithm for accurate line-by-line comparison. Essential for code review.

• Free to use, no registration required
• Works entirely in your browser
• No data sent to servers
• Accessible on desktop and mobile

• Homework and assignments
• Exam preparation
• Classroom demonstrations
• Research and analysis
• Quick calculations