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Looks like the site is missing a robots.txt file; that could cause some issues (hit tip, Tim Holmes). I'd get one in place, just for housekeeping - search engines have been known behave oddly sometimes when they can't find a robots.txt file.

I'm struggling to see anything obvious that would cause this behaviour, but equally, I wouldn't be too concerned about it - the page is clearly indexed and discoverable, so this may just be a quirk.

Hey Alessia,

Just wanted to ping you a note to let you know that I'm looking at and thinking about this, and intending to get back to you tomorrow with a structured answer and some direction.

This sounds like the best approach. Typically, most crawlers won't save or interact with cookies, so Google etc will just see the site they've requested.

Yup, an "empty" robots.txt file should look like this:

User-Agent: *
 Disallow:

Ah, a very interesting question!

I'd not be too concerned; you're loading the content in through a data attribute rather than directly as text. However, there are definitely a few options you could consider:

1. Render via SVG feels like the safest bet, though that's going to be a pretty large, complex set of vectors.
2. Save + serve as an image (and overcome the file size concerns by using WebP, HTTP/2, a CDN like Cloudflare, etc)
3. Serve the content via a dedicated JavaScript file, which you could block access to via robots.txt (a bit fudgey!)

I'd be keen to explore #2 - feels like you should be able to achieve the effect you're after with an image which isn't ridiculously huge.