Universal Saw Blade Identification & Finder Service

Users frequently struggle to find correct replacement blades for tools, especially when markings are unclear or the tool is old/inherited, as demonstrated by the OP. A service, possibly online but backed by a physical database/expertise, that allows users to upload photos and measurements of their saw and existing blades (or tool markings) to identify the correct compatible replacement blade (length, thickness, type) would be incredibly valuable. This eliminates guesswork and reduces incorrect purchases, leveraging expert knowledge to solve a common consumer frustration.