Text Diff Checker

Compare two texts and identify additions, deletions, and changes between them.

Diff Result

Enter text in both editors to see the differences
Additions
Deletions
Changes

Comparison Options

Display Options

Ignore Options

Diff Summary

Lines compared:0
Additions:0
Deletions:0
Changes:0
Unchanged:0
Similarity:100%

About Text Diff Checker

A diff checker compares two texts and highlights the differences between them, useful for version control, document editing, and code review.

Common Uses:

  • Comparing document versions
  • Tracking changes in code or configuration files
  • Validating edits in content
  • Checking for plagiarism or unauthorized changes
  • Reviewing collaborative writing projects

Comparison Modes:

  • Line by line: Best for structured content like code
  • Word by word: Good for detecting changes in paragraphs
  • Character by character: For catching minor text alterations
  • Ignore case: Useful when only content matters, not formatting
  • Ignore whitespace: Helpful for code where indentation varies

The diff algorithm uses Longest Common Subsequence (LCS) analysis to identify the minimal set of changes needed to transform the original text into the modified version, highlighting additions, deletions, and modifications.