A browser tool that reads MusicXML and returns fingerings tuned to your hand size and biomechanical constraints. Walks through the backtracking cost minimization, the actual weight values, the academic lineage since Parncutt 1997, and why the same framework generalizes to guitar.
iPhone 17's HEIC adds new brand identifiers to the ftyp box, pushing it past exifr's hard-coded 50-byte guard. Here's a dynamic-import fallback to ExifReader, plus Null Island filtering and iloc pre-inspection to harden browser-only photo tools.
