Thank you so much @thomas4ithemes – you’ve really shone some light on what’s been confusing me for weeks.
I’ve been using Elementor and i’ve been spending all this morning gradually deleting elements to identify which ones seem to cause them.
I can reduce them by about 200 by re-creating some of the blocks again but there’s often a few left behind that i can’t get rid off. This is strange considering that a new page doesn’t appear to have any, which makes me think that it’s not Astra (the theme i’m using).
Is there a way to remove all iframes and just prevent them from being used on my site? Because i don’t use them anywhere else anyway and i’m not planning on doing so.
Thanks again
