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Text diff checker

Compare two texts line by line and mark additions, removals and unchanged content.

Line comparison · Add / Delete markers
Input
Usage guide and examples

Convert, compare and calculate

Enter original and revised text, then compare line by line. Results mark removals with − and additions with + while retaining unchanged lines. Whitespace and line endings can matter; comparison does not edit or merge the documents.

Check the input format and options with this example before using your own data. Random values, file sizes and presentation vary with the input and settings.

Example input and settings

a
b
↔
a
c

What to check in the result

- b
+ c