Hi @willie - did you mean to write iPad 2? I can't make any guarantees that this kind of hardware is remotely capable of running Color.io. I'm using my own 2019 iPhone 11 as a support cutoff point.

Somewhat recent mobile and tablets will be able to save images up to 16 million pixels on iOS devices. For larger images, even the very latest iPad Pros have severe memory issues in Safari. Unfortunately this needs to be addressed by Apple directly as they have (almost certainly with intention) built several artificial limitations into Safari and are preventing any other browser to be used on their platform. https://open-web-advocacy.org/

https://www.whatsmybrowser.org/b/QIBIV