Code Difference Checker
Compare code versions line-by-line with character highlighting.
Remove Lines
Hover over changed lines to see the Trash icon. Click to delete that specific line from the comparison.
Smart Highlight
Modified lines are automatically detected, highlighting exactly which characters changed.
Merge & Sync
Move changes between panels. The diff view updates instantly to reflect the new state.
Step-by-Step Guide
- 1Paste your original text or code into the left "Original" pane.
- 2Paste your modified text or code into the right "Changed" pane.
- 3The tool will automatically highlight the differences in real-time.
- 4Red highlights indicate removed text, while green highlights indicate added text.
- 5Use the navigation arrows to jump between specific changes in large documents.
Why use this tool?
Tracking exact changes between two versions of code, configuration files, or plain text is a fundamental requirement in software development. Our Diff Checker provides an immediate, side-by-side visual comparison of two text inputs. It highlights exact line and character additions, deletions, and modifications, preventing regressions and helping identify subtle bugs.
Privacy Note: Like all tools on UtilityKit, this utility runs entirely in your browser. No data is sent to our servers.