🔒 Enterprise-Grade Privacy: All file processing happens in your browser. We never see, store, or access your data.
A technical deep dive into our browser-based file comparison technology that keeps your data completely private and secure.
We are not an AI company. VeriDiff uses traditional, deterministic comparison algorithms to show you exactly what changed between your files. No machine learning, no artificial intelligence, no "analysis" of your content. Just precise, mathematical comparison of data structures.
Parse file formats and extract data structures
Cell-by-cell, row-by-row, character-by-character
Highlight changes, additions, deletions
You select files from your computer using your browser's file picker. Files remain on your device - no upload occurs.
Your browser reads files into temporary memory (RAM) using the FileReader API. Files are never transmitted anywhere.
JavaScript libraries (SheetJS, mammoth.js, etc.) parse file formats in your browser to extract data structures - spreadsheet cells, document paragraphs, table rows.
Custom JavaScript algorithms compare data structures using mathematical operations: string matching, numerical tolerance checking, structural difference detection.
Differences are highlighted in your browser and can be exported as HTML reports. Everything stays local - no server communication.
| File Format | Comparison Type | Features |
|---|---|---|
| 📊 Excel (.xlsx, .xls) | Excel ↔ Excel Excel ↔ CSV | Smart header mapping, numerical tolerance, multiple sheets |
| 📝 CSV (.csv) | CSV ↔ CSV CSV ↔ Excel | Delimiter detection, encoding handling, row alignment |
| 📄 PDF (.pdf) | PDF ↔ PDF | Text extraction, paragraph comparison, layout-aware |
| 📋 Word (.docx, .doc) | Word ↔ Word | Paragraph tracking, formatting preservation, track changes |
GDPR, HIPAA, SOX, PCI-DSS compliant by design. Since files never leave your browser, there is no data transfer, storage, or processing on our servers that could violate regulations. Perfect for financial services, healthcare, and legal industries.
Do not trust us with your data - you do not have to. Our architecture makes it technically impossible for us to access your files. Even if we wanted to (we do not), or if we were compromised, your data remains secure.
Passes corporate security reviews. IT departments can audit our open architecture and verify that no data exfiltration is possible. No special firewall rules, VPN requirements, or security exceptions needed.