Diff Checker

Compare two blocks of text and see what changed line by line.

A diff checker compares two pieces of text side by side and highlights exactly what has changed — line by line. It's an essential tool for reviewing code changes, comparing document versions, spotting differences in config files, and understanding what changed between two API responses. Green lines were added. Red lines were removed. Unchanged lines are shown in grey for context.

How to use:

• 1. Paste your original text into the left panel
• 2. Paste your modified text into the right panel
• 3. Click Compare
• 4. Added lines are highlighted green, removed lines in red