Media Section: Files Quantity

MIT App Inventor Help
14

Actually the easiest way:

  1. Batch convert the png files to webp: https://www.irfanview.com/ (free)
  2. Use SteveJG's method to add them to the App Assets 'through the back door' and develop the App on the Code Server. Assets app - limit - #9 by SteveJG (previously posted by Anke)