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差分チェッカー

2つのテキストファイルを並べて比較し、違いをハイライト表示

Original
4 lines
Modified
5 lines
2 added1 removed3 unchanged
11 Hello World
2+This is line 2 modified
2This is line 2
33 This is line 3
44 The quick brown fox
5+A new line

Diff Checker — Compare Two Texts Online

Paste two pieces of text to instantly see what changed — added lines, removed lines, and modifications are highlighted side by side. Useful for comparing code versions, documents, and config files.

FAQ

What is a diff?

A diff (from 'difference') is a comparison between two versions of text that shows exactly what was added, removed, or changed.

How is diff different from text compare?

They're the same thing. 'Diff' is the technical term (from the Unix diff command) while 'text compare' is the plain-English description.

Can I compare code files?

Yes — paste any code, config, JSON, or plain text. The tool highlights differences at the line level.

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