The single biggest change since 1.5 is under the hood: MacSurf's JavaScript engine has been replaced. Duktape (ES5) is gone; MacSurf now runs macQJS which is a QuickJS port for Classic Mac OS and executes modern ES2023 JavaScript natively on Mac OS 9.

Wow. Just wow, I will give this a run on my old iMac G4 later today. Very cool to see this progress, and I am a big fan of NetSurf.