Free Online Text Diff & Compare Tool
Compare two blocks of text and see exactly what changed. Additions, deletions, and modifications are highlighted with color coding. Works entirely in your browser — nothing is uploaded or stored. Perfect for comparing code, documents, contracts, and configuration files.
0 added 0 removed 0 unchanged
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Frequently Asked Questions
The tool compares text line by line and highlights additions (green), deletions (red), and unchanged lines. It uses a standard diff algorithm.
Yes — paste any text including source code, JSON, XML, configuration files, or plain text.
Yes — all comparison happens in your browser. Nothing is sent to any server.
No hard limit — works well with texts up to tens of thousands of lines.