If it’s for textual information, I’m personally a fan of covering all bases. Screenshot, link to site, and quoted relevant text.
Webpages can change, but screenshots can stop being hosted with no warning and any text in screenshot form can’t easily be copy and pasted. Quoted text is essentially the longterm accessible failsafe. Text in comments tends to last much longer than images or links.
Great point honestly. I was only writing that comment from the perspective of answering troubleshooting centric questions. Not everyone who browses the internet has the same ability to see though, and while I imagine screen readers have some ability to process images (I’ve never used one so I don’t know specifically), I can only assume that actual text is much easier.
I know that text for me is much easier than screenshots, cause I’ve adjusted the font size and type in my browser to suit my preferences. Can’t do that for an image.