Point the tool at each network folder holding the scans. Access is remembered between sessions; you only need to reconnect after a browser restart. Nothing is uploaded — everything stays on this machine.
A reference matches only when it equals a complete block of the filename. In 05308800478497_2510233024_2500293483.tif the three blocks are each a valid reference — a partial number is not a match.
Accepts .xlsx, .xls and .csv. Other columns in the sheet are kept and stored alongside each match.
Every confirmed match is kept here, so a reference looked up once never needs searching again. Stored in this browser on this machine.