TopToolAIText Diff Checker
ⓘ About this tool
🔄 Last updated 4 Oct 2026
✓ Reviewed by TopToolAI Team
Compares two blocks of text line by line and highlights what was added or removed between them.
How to use Text Diff Checker
Step-by-step guide to the boxes below. Open it only if you need help.
How to use Text Diff Checker
Step-by-step guide to the boxes below. Open it only if you need help.
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1
Original text Text box
Paste the original version of the text.
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2
Changed text Text box
Paste the changed version. Differences with the original are highlighted.
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3
Press “Compare”
Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.
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4
Read your result
Your answer appears under the button, with a short note in plain words where it helps. Change any box and press again to compare different numbers.
Text Diff Checker FAQs
Does this compare word by word?
No — it compares line by line, which works well for most documents, code, and lists.
How do I compare two versions of a text?
Paste the original on one side and the changed version on the other. The diff checker highlights what was added or removed.
What do the highlight colours mean?
Typically one colour shows removed text and another shows added text.
Can I use it to compare code?
Yes, it works for any plain text, including code, as long as you paste both versions.
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