Text Diff / Compare
Compare two text documents to find the exact differences. Supports both line-by-line and word-by-word comparison.
About Text Diff / Compare
What is a Text Diff Tool?
"Diff" is short for difference. A Text Diff tool is a utility that compares two blocks of text (an original version and an updated version) and highlights exactly what has changed between them. It is an indispensable tool for programmers, authors, and editors.
Comparison Modes
Our tool offers two distinct ways to compare text:
- Words Mode: This mode checks for changes word-by-word. It is perfect for prose, articles, and essays where a single word might have been changed in the middle of a paragraph.
- Lines Mode: This mode checks for changes line-by-line. It is the standard mode for comparing source code, JSON data, or configuration files where a change usually affects the entire line.
How to Read the Results
The results are color-coded for easy reading:
- Green Text: Indicates content that was added in the updated version.
- Red Strikethrough: Indicates content that was removed from the original version.
- Normal Text: Content that remained unchanged.
Privacy Guarantee
Like most of our tools, the comparison algorithm runs 100% locally in your web browser. Your sensitive code or private documents are never uploaded to our servers, ensuring complete privacy and security.
Frequently Asked Questions
Is it better to use Words or Lines mode?
Use "Words" mode for prose, essays, and general text where you want to see exact words changed within a sentence. Use "Lines" mode for source code, JSON, or structured data where full line changes are more meaningful.
Is my sensitive text secure?
Absolutely. The text comparison happens entirely in your browser using JavaScript. Neither the original nor the updated text is ever sent to a server.