Phone Picture vs Official PDF — Every Mismatch Flagged.

Snap a photo of a paper invoice with your phone. Upload it alongside the digital PDF record. AI strips out watermarks and background noise, then compares every line item, amount, and date—spotting discrepancies in seconds.

Strips watermarks, stamps, and background noise before comparisonDesigned for invoices, receipts, and financial audit documentsFlags mismatched amounts, dates, and line items across formats

Upload Original File

Recommended: IMAGE

PDF, Word, PNG, JPG, BMP, TIFF (max 50MB)

Upload Modified File

Recommended: PDF

PDF, Word, PNG, JPG, BMP, TIFF (max 50MB)

Your file is transmitted over encrypted connections. It is kept for 30 days for download, then permanently deleted from our servers. Files are isolated by account. Only you can access your own files.

How It Works

Upload Two Files

Drop the original and modified documents. Works with PDF, Word, or images — any format combination.

AI Compares Everything

Our Vision AI aligns both documents and detects every insertion, deletion, font change, and layout shift.

Review Differences

Side-by-side diff view highlights every change with page-level precision. Download the comparison report.

Frequently Asked Questions

Can it read text from a slightly blurry phone photo?

Yes, within reasonable limits. The AI uses advanced OCR optimized for document photos. However, extremely low-light or heavily skewed images may reduce accuracy. For best results, take the photo in good lighting with the document laying flat.

What happens if there is a watermark or stamp on the scanned image?

The AI is trained to recognize and ignore common artifacts like watermarks, company stamps, and background patterns. It isolates the meaningful text and tabular data before performing the comparison, so stamp overlaps do not create false positives.

Need to compare a PDF against another PDF instead?

If both documents are already in PDF format, try our PDF Comparison tool. It is optimized for PDF-to-PDF diffs including scanned vs native PDF comparisons with full layout preservation.

What is the minimum image quality needed for accurate comparison?

For best results, use images with at least 150 DPI effective resolution. The document should be reasonably flat and well-lit. The AI can compensate for moderate blur, perspective distortion, and uneven lighting — but extremely dark or skewed images may reduce accuracy.

Can I compare multiple images against a single PDF?

Each comparison processes one image against one PDF. If you have multiple pages (e.g., a multi-page invoice photographed as separate images), combine them into a single PDF first, or compare them one pair at a time. For high-volume needs, consider our batch processing options.