Compare Text and Find Differences Instantly
Paste two versions of text to view insertions, deletions, and edits side-by-side. Choose line mode or word mode, optionally ignore whitespace, and copy a unified diff.
Modified Text
Original Preview
Deletions and changesModified Preview
Insertions and changesUnified Diff Output
Frequently Asked Questions
How does this diff checker work?
The tool compares your original and modified text in your browser and highlights differences as insertions, deletions, or changed content.
What is the difference between line and word mode?
Line mode is best for paragraphs/code blocks. Word mode is best for sentence-level edits and small textual changes.
Can I ignore spacing differences?
Yes. Enable “Ignore whitespace” to normalize spaces and tabs while comparing content.
Does this send my text to a server?
No. This is a client-side diff checker. Your text stays local in the browser.