Free Code Diff Viewer Online (Compare Code)
Use this free code diff viewer to compare two snippets and highlight changes. Fast, private, and works in your browser.
What is Code Diff Viewer?
Code Diff Viewer compares two blocks of code or text line by line and highlights what was added or removed. It is useful for reviewing changes and merge conflicts. The comparison runs in your browser.
How to use this tool
- Paste the original code on the left.
- Paste the changed code on the right.
- View the highlighted differences.
Features
- Line-by-line diff
- Highlights added and removed lines
- Works for any code or text
- Color-coded output
- Runs entirely in your browser
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
How is this different from Text Diff?+
It is tuned for code/text comparison with the same line-diff engine; use whichever framing fits.
Is my code uploaded?+
No. The comparison happens entirely in your browser.
Does it do syntax highlighting?+
It highlights added/removed lines; it focuses on the diff rather than language syntax.
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