Depends on your tax situation. For my private taxes it's maybe 3 or 4 documents and those from the bank etc have all gone PDF anyway. But when I was a freelanc

Depends on your tax situation. For my private taxes it's maybe 3 or 4 documents and those from the bank etc have all gone PDF anyway. But when I was a freelancer I used a document scanning system provided by my bookkeeper. It worked similar to this open source thing, scan to PDF, automatic OCR and classification. Needed it because many invoices still arrived on paper, and receipts for restaurants etc I usually took a picture to upload.