Diff Checker — Compare Two Texts Instantly Free

New

Compare two texts and instantly spot the differences

Paste two pieces of text and instantly see line-by-line differences highlighted — additions in green, removals in red. Powered by an LCS diff algorithm, runs entirely in your browser.

Differences

+2 added−1 removed
The quick brown fox
- jumps over the lazy dog
+ jumps over the sleepy dog
+ Hello!
Goodbye!

Line-by-line comparison runs entirely in your browser using a longest-common-subsequence algorithm — nothing is uploaded.

You Might Also Like

Regex Tester

Test and debug regular expressions with live highlighting

Try it

UUID & Hash Generator

Generate UUIDs and MD5/SHA hashes instantly

Try it

Markdown to HTML Converter

Convert Markdown to clean HTML with live preview

Try it

📖 Learn More

Regex Tester Guide: Learn and Debug Regular Expressions Fast

Regular expressions are powerful but unforgiving — one wrong character and nothing matches. Here's how to test and debug them visually, for free.

7 min read
Read article