TechnicalFeb 22, 20268 min read
A Deep Dive into VIN Decoding
VINs are dense little strings packed with real information. I spent a weekend reverse-engineering decoder logic so you do not have to.
A Vehicle Identification Number is 17 characters long and contains more structured information than most developers realize. This is a deep dive into how I built the decoding logic behind URL2VIN.
The Anatomy of a VIN
Each section of the VIN — WMI, VDS, VIS — encodes different data: the manufacturer, vehicle attributes, model year, plant code, and serial number. Once you understand the structure, parsing becomes straightforward.