Text & Code Compare Tool

Inputs

Original Text / Code

Modified Text / Code

Ignore leading & trailing whitespace Useful when you don't want spacing or indents to register as changes. Ignore case differences Treats uppercase and lowercase characters as identical.

Result

Added Lines

Removed Lines

Unchanged Lines

Type

Line Content

Enter text/code and click Compare.

How it works

This online diff checker compares inputs line-by-line using a client-side Longest Common Subsequence (LCS) logic. None of your data is sent to a server; calculations happen completely in your browser.

Frequently Asked Questions (FAQ)

Is my code or text private? ▼

Yes. All comparison algorithms run strictly inside your browser. No contents or documents are ever uploaded to any web servers.

What is the meaning of ignoring trims or cases? ▼

Ignoring trims strips spaces or indents from the beginning and end of lines before comparison. Ignoring cases prevents character capitalization differences from triggering changes.