I built a simple VIN decoder on top of the NHTSA's vPIC database. I ported the database to sqlite and used web assembly to run it fully in the browser. I have been working on a larger automotive consumer application and I needed a lightweight VIN decoder to normalize ingested vehicle data and couldn't find anything. The code to port the vPIC database is [here](
https://github.com/samsullivandelgobbo/vPIC-dl) hoping it helps anyone working on a similar problem.