Document Difference Comparison Tool

Our diff checker uses the Myers diff algorithm, a sophisticated comparison method that analyzes documents line by line to identify precise differences. The tool first parses your uploaded documents (supporting .txt, .pdf, and .docx formats), then applies the algorithm to detect additions, deletions, and modifications. The results are presented in an intuitive visual format with color-coded highlights, making it easy to spot changes. Additionally, our AI analysis feature provides intelligent insights about the nature and significance of the detected differences.

Yes, our diff checker is completely safe and secure. All document processing happens locally in your browser - your files are never uploaded to external servers or stored in the cloud. This ensures complete privacy and confidentiality of your sensitive documents. The tool performs all comparisons client-side using JavaScript, meaning your data never leaves your device. We also implement strict file validation to prevent malicious uploads and have built-in safeguards against corrupted files.

Comparing text files is simple with our tool:
1) Upload your first document by dragging and dropping it into the "Document A" area or clicking "Select File".
2) Upload your second document to the "Document B" area using the same method.
3) Click the "Start Comparison" button to begin the analysis.
4) Review the detailed comparison results showing additions (green), deletions (red), and unchanged content.
5) Use the AI Analysis feature for deeper insights into the changes. The tool supports various formats including plain text (.txt), PDF (.pdf), and Word documents (.docx), with a maximum file size of 50MB per document.