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Text Diff Checker
Compare two texts side-by-side with advanced change tracking. Highlight differences, calculate similarity, and export detailed comparison reports.
Last updated: 1/21/2025
Text Diff Checker
Original Text
Modified Text
Comparison Options
How to Use
Basic Usage
- • Paste your original text in the left panel
- • Paste your modified text in the right panel
- • View highlighted differences instantly
- • Green highlights show additions
- • Red highlights show deletions
Advanced Options
- • Ignore Case: Treat "Hello" and "hello" as same
- • Ignore Whitespace: Ignore extra spaces/tabs
- • Compare Words: Word-level instead of line-level
- • View Modes: Side-by-side or unified diff
- • Export: Save detailed comparison report
Frequently Asked Questions
What is text diff checking?
Text diff checking compares two versions of text and highlights the differences between them. It shows what content was added, removed, or remained unchanged, making it easy to track changes in documents or code.
What are the different view modes?
The tool offers two view modes: Side-by-Side shows both texts next to each other with changes highlighted, while Unified Diff shows all changes in a single column with clear addition/deletion markers.
How does the similarity percentage work?
The similarity percentage is calculated using the Levenshtein distance algorithm, which measures how many single-character edits are needed to change one text into another. Higher percentages indicate more similar texts.
What does 'Compare Words' option do?
By default, the tool compares line-by-line. The 'Compare Words' option switches to word-level comparison, which is useful for detecting changes within sentences or when dealing with different line breaks.
Can I ignore case or whitespace differences?
Yes! Use 'Ignore Case' to treat uppercase and lowercase letters as the same, and 'Ignore Whitespace' to ignore extra spaces, tabs, and formatting differences while focusing on content changes.
How can I save or share the comparison results?
You can copy a quick report to your clipboard using 'Copy Report' or export a detailed analysis as a text file using 'Export Diff'. The export includes statistics, settings used, and the complete diff.
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