Diff Checker — Compare Two Texts
Compare any two pieces of text and see differences highlighted line by line. Perfect for comparing code versions, document revisions, or any text changes.
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Diff Checker
TextFree · No signup
Guide
How to Use Diff Checker
Paste Original
Enter your original text or code in the left text area.
Paste Revised
Enter the updated/revised version in the right text area.
Compare
Click "Compare" to see differences highlighted. Green = added, Red = removed, Yellow = changed.
Frequently Asked Questions
A diff (difference) shows what changed between two versions of text. It highlights added lines (in green), removed lines (in red), and unchanged lines. Used extensively in version control (git diff).
Git diff is a command that shows differences between commits, branches, or working files. Our tool provides similar visual diff output for any two text blocks.
Yes! Paste code from any programming language. The diff viewer uses line-by-line comparison, so it works perfectly for comparing code versions.
Paste the original document in the left panel and the revised version in the right panel. All changes are instantly highlighted for easy review.
Our tool does line-level comparison. Lines that changed are highlighted in yellow/orange, while completely new or removed lines are shown in green/red.