Text Diff Checker

How to use the Text Diff Checker

1. Paste your original text into the left panel.
2. Paste the modified version into the right panel.
3. Click "Compare" to generate the diff.
4. Review the highlighted results: green shows additions and red shows deletions.

Word-level vs. line-level diffing

Line-level diffing (common in code version control) flags an entire line as changed even if only one word differs, which is fine for code but noisy for prose. Word-level diffing (what this tool does) highlights only the specific words that actually changed within a sentence, which is far more useful for comparing contract revisions, edited essays, or any prose where a full-line-changed flag would obscure exactly what moved.

Frequently asked questions

Does it show additions and deletions differently?

Yes. Additions and deletions are color-coded separately so you can tell at a glance whether something was added, removed, or simply reworded (shown as a paired deletion and addition).

Can I compare two full documents, not just short text?

Yes, paste full documents into each side. Performance may slow slightly on very large texts, but there's no hard length limit for typical documents.

Does it ignore minor formatting differences like extra spaces?

Depending on the mode, whitespace-only differences can be ignored so the comparison focuses on actual content changes rather than flagging every incidental space or line-break difference as a change.