Text Diff: How to Compare Texts and Find Differences

Text diff compares two versions of text to find what was added, removed, or changed — widely used in writing and coding.

How Diff Output Looks

• Added lines start with +
• Removed lines start with -
• Unchanged lines have no marker

Example

Version 1: Hello world

Version 2: Hello Thailand

Diff result:

- Hello world
+ Hello Thailand

Where It Applies

• Code review: find changed lines before committing
• Document versions: compare the latest edit to the old one
• Collaboration: see what others changed in your work
• Plagiarism checks: compare two files

Tips

• Use diff to proofread before submitting
• Line-by-line comparison is clearer than scanning whole blocks

Try the text diff tool to compare instantly.