Browser utility · No upload
Text Diff Checker
Compare two blocks of text line by line — free, private, and instant.
Runs locally in your browser — your input is never uploaded or stored.
About this tool
Text Diff Checker lets you compare two blocks of text line by line without installing an app or creating an account. Added, removed, and unchanged lines are clearly marked for quick review.
Spot exactly what changed between two versions of an article, contract, config file, or code snippet without hunting through the text by eye.
How it works
- Enter or choose your values
- Review the instant result
- Copy or download the result
Frequently asked questions
How do I use Text Diff Checker?
Enter or choose your input in the tool above. The result updates immediately or appears when you select the action, ready to copy or download.
Does it compare word by word or line by line?
It compares line by line and highlights each added, removed, and unchanged line so differences are easy to scan.
Is Text Diff Checker free, and is my data private?
Yes. Text Diff Checker is free with no account or watermark, and it runs entirely in your browser so your input is never uploaded, stored, or shared.
Does it work on phones and tablets?
Yes. It works in current browsers on Android, iPhone, iPad, Windows, macOS, and Linux.