[yoz-y]

It’s the good old white text on white background. Not really a way to defend against this, except having a no-style or high contrast mode that people actually use. Maybe some warning that would trigger if text is too small, off page or has very low contrast would help?

[skybrian]

It seems like there could be a filter so that the AI can only see the text when it’s clear that a user could read it, and it’s okay if the AI misses some text. This might involve actually rendering it, though.

[Bootvis]

Rendering followed by OCR and making sure that the computer doesn’t see more or less than the user does. Tricky and computionally more expensive.

[Ekaros]

And even then. I might question if what is rendered and then OCR is same as humans see on their screens... I am pretty sure there will be some tricks to change things enough for computer to get something different from humans.