Free Diff Checker
Compare two texts or code blocks and see the differences highlighted. Supports side-by-side and unified views.
How Diff Works
Line-by-Line
Compares each line to find the longest common subsequence, then highlights changes.
Side by Side
Shows original and modified text in parallel columns for easy visual comparison.
Unified View
Shows changes in a single column with + for additions and - for deletions (git-style).
About This Tool
This free online tool is part of BugBrain's developer toolkit. It runs entirely in your browser—no data is sent to any server, ensuring your information stays private and secure. Use it as many times as you need, completely free.