Diff Checker

Compare two text files or code snippets and see the differences highlighted line by line. Free online text comparison tool.

Original Text

Modified Text

Diff Checker FAQ

What is a diff checker?

A diff checker (difference checker) is a tool that compares two text files or code snippets and highlights the differences between them. It shows which lines were added, removed, or modified, making it easy to spot changes.

How does the diff checker highlight changes?

This diff checker uses color coding: green background indicates lines that were added in the modified version, and red background shows lines that were removed from the original. Unchanged lines appear with normal styling.

Can I compare code with this tool?

Yes, this diff checker works perfectly for comparing code snippets, scripts, configuration files, or any plain text. It's useful for reviewing code changes, checking document revisions, or comparing versions of files.

What file types can I compare?

You can compare any plain text content including TXT files, code files (JavaScript, Python, Java, etc.), JSON, XML, CSV, HTML, CSS, configuration files, and more. Just paste the text content from your files.

Is this diff checker similar to Git diff?

Yes, this tool provides similar functionality to Git diff or Unix diff commands, showing line-by-line comparisons. However, it's simpler and works entirely in your browser without requiring command line knowledge.

Can I see which specific characters changed?

This diff checker performs line-level comparison, showing which entire lines were added, removed, or kept the same. For detailed character-level changes, the line highlighting helps identify where modifications occurred.