If you want to run PsychoPy online I highly recommend that you:
Write your experiment in Builder using version 2020.1.3 (or later).
Study my crib sheet to familiarise yourself with the aspects that need manual translation or additional definitions.
Where possible try to write the experiment so it works both locally and online. Some errors are easier to spot locally.
Make suggestions to the crib sheet if you have a fix that can help others.
For 2021 versions use my updated crib sheet.
Wakefield Morys-Carter MA (he/him)
Senior Psychology Demonstrator and Teaching Fellow
Oxford Brookes University
Treasurer and Membership Secretary
Association of Technical Staff in Psychology (ATSiP)