Is Text Diff Checker free?

Yes, completely free with no registration, login, or subscription required. All features are available at no cost.

How accurate is the text comparison?

The tool uses character-level and line-level comparison algorithms to identify exact differences between texts with 100% accuracy, detecting every added, removed, and modified character.

What's the maximum text size I can compare?

You can compare texts up to 1 million characters each. Most documents, articles, and code files will process instantly.

Does Text Diff Checker work on mobile?

Yes, works perfectly on all devices including iPhone, Android, tablet, and desktop. The side-by-side view adjusts to fit your screen size.

Is my data safe with Text Diff Checker?

Yes, completely safe. All text processing happens in your browser. Your texts are never uploaded to servers or stored anywhere.

What file formats does Text Diff Checker support?

Supports plain text, .txt, .csv, .json, .xml, .html, .css, .js, and code files. Simply paste the content or copy-paste from any document.

Can I compare code files?

Yes, Text Diff Checker works excellently for comparing code in Python, JavaScript, Java, PHP, CSS, HTML, and all other programming languages.

Does the tool show word count differences?

Yes, the comparison report shows the total character count and line count for both texts, plus the number of additions, deletions, and modifications.

line by line

Text Diff Checker — line by line

Compare two texts and highlight differences side-by-side. Find added, removed, and changed lines.

Original text

Modified text

How to use Text Diff Checker

Paste your first text

Click the left text box labeled 'Original Text' and paste or type your first text. You can paste up to 1 million characters.

Paste your second text

Click the right text box labeled 'Compare Text' and paste or type the text you want to compare. The tool will automatically detect differences as you type.

Review the highlighted differences

Red highlights show removed content, green highlights show added content, and yellow highlights show modified lines. Scroll through both columns to review all changes side-by-side.

Download or clear results

Click 'Download Report' to save a .txt file of the comparison, or click 'Clear All' to reset both text boxes and start a new comparison.

Frequently Asked Questions

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