Excellent! Had some rendering problems with complicated svgs and background videos on our homepage, but next time I want to tweak an existing page's design, I'll reach for this.
I'm often just tweaking stuff in Chrome Dev Tools to try and make a page edit
Have you considered having a Chrome Extension as a starting point? That could be an easy way to grab the HTML and then ship it into Figma in the exact state the user is seeing it, without needing to worry about actually accessing that page from your own servers / auth / state etc.