Diff Checker
NewFree online diff checker. Paste two versions of text and instantly see which lines were added, removed, or changed. Great for comparing code, documents, or any text content.
OriginalBefore
ModifiedAfter
Guide
How to Use
- 1
Paste the original text in the left panel
- 2
Paste the new/modified text in the right panel
- 3
Differences are highlighted automatically
- 4
Green = added, Red = removed
FAQ
Frequently Asked Questions
What algorithm is used?
A simple line-by-line diff that marks lines as added, removed, or unchanged.
Can I compare code?
Yes. Paste any text including source code, JSON, markdown, or plain text.
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