Comparison options
Ignoring whitespace or case can reduce noise, but it can also hide meaningful changes in whitespace-sensitive languages, data, or case-sensitive identifiers.
Code Diff Checker
Compare two blocks of code or text and inspect additions, deletions, and unchanged lines. Switch between side-by-side and unified views, apply comparison options, and export the result as a patch.
Features
Side-by-side comparisonUnified diff viewSyntax highlightingLine numbersIgnore whitespace optionExport diff as patch
How to use the Code Diff Checker
- 1Paste the original text on the left and the changed version on the right.
- 2Choose side-by-side or unified display.
- 3Enable ignore-whitespace or ignore-case options when appropriate.
- 4Review the changes, then copy or download the generated patch.
Common uses
- Review changes between two code snippets.
- Compare configuration files or generated output.
- Create a patch-style record of text changes.
Frequently asked questions
Can I swap the two versions?
Yes. Use the swap action to reverse the original and changed inputs.
What is unified view?
Unified view combines removals and additions into one patch-style sequence instead of displaying two columns.
Does the tool modify my files?
No. It compares pasted or loaded text and only downloads a patch when you request one.