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Tools

Diff Checker

Compare text, source code, or shell scripts with a more advanced side-by-side viewer. Changed lines are paired together, both sides keep their own line numbers, and inline differences help you spot exactly what changed inside a line.

Compare Text or Code

Side-by-side diff

Best for code review, scripts, config files, and structured text.

Each side supports up to 120000 characters while preserving whitespace, indentation, and tabs.

0 left chars, 0 right chars
Proper paired line numbers Original and updated code each keep their own line references.
Inline change highlights Modified lines show token-level additions and removals inside the row.
Code and script friendly Whitespace, indentation, and tabs stay visible for programming languages and config files.
Changed 0
Added 0
Removed 0
Unchanged 0
Changed line Added line Removed line Unchanged line 
Diff output will appear here after comparison.
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