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Text Diff Checker

Compare two texts and highlight the differences

Enter Texts to Compare

Original Text

Modified Text

Options

Key Features

  • Line-by-Line Comparison: See exactly what changed between versions
  • Multiple Views: Unified or side-by-side comparison
  • Smart Options: Ignore case, whitespace, or trim lines
  • Color Coded: Green for additions, red for deletions
  • Privacy First: All processing happens in your browser

What is Diff Checker?

Compare two texts and find differences instantly with our free online Diff Checker. Highlights additions, deletions, and modifications between two text blocks with color-coded side-by-side or inline views. Perfect for comparing code versions, document revisions, configuration files, and any text-based content.

How to Use Diff Checker

1

Paste the original text in the left panel.

2

Paste the modified text in the right panel.

3

Click 'Compare' to highlight all differences.

4

Toggle between side-by-side and inline diff views.

Key Features

Color-coded additions (green) and deletions (red)
Side-by-side and unified/inline diff views
Line-by-line and character-level comparison
Ignore whitespace option
Download diff report

Frequently Asked Questions

What does the diff checker look for?

Our diff checker compares two texts line by line and character by character, identifying additions (new text), deletions (removed text), and modifications (changed text). Results are color-coded for easy visual identification.

Can I compare code files?

Yes, the diff checker works excellent for comparing any text-based content including source code, configuration files, CSV data, and more. It handles all programming languages.

What does 'ignore whitespace' mean?

When enabled, the ignore whitespace option treats spaces, tabs, and empty lines as non-significant, focusing only on actual content changes. This is useful when comparing code with different indentation styles.