Free Online Code & Text Diff Viewer
Highlight line-by-line differences between two code structures, files, or copy logs.
Compare Code Structures and Spot Changes Instantly
Debugging code differences between versions can be tedious. Our free code diff viewer makes it easy to compare two text snippets side-by-side or in a unified inline view.
It highlights added lines in green, deleted segments in red, and modified character differences, helping you locate changes fast.
Key Benefits & Features
Multi-view Support
Toggle between side-by-side split and unified inline views.
Character-level Highlighting
Highlights modified letters within changed lines.
How to Use the Code Diff Viewer Step-by-Step
This utility runs entirely inside your browser using client-side JavaScript. We prioritize your security: none of your inputted text is logged or stored.
- 1
Paste your Original code block in the left panel.
- 2
Paste the Modified version in the right panel.
- 3
Analyze the highlighted differences in the output section.
Practical Examples
Left: "const val = 10", Right: "const val = 20"
Frequently Asked Questions (FAQ)
Can I compare non-code files?▼
Yes! You can paste any text document, email copy, or code script to verify changes.
Is there a limit to text comparison size?▼
It supports comparing thousands of lines, but performance is bound by your local browser capacity.
Ready to boost your productivity?
Browse our full list of free developer utilities and make your daily content, coding, or math tasks easier.