Although sometimes too much, I think the way fly.io starts their blog posts with a description of what they do is brilliant. I have no idea what Hoppscotch is and reading the first paragraphs I still don’t.
HN's submissions are either a URL with a non-editorialised title, or some text (like what you get in Show HN and Ask HN posts) - not both.
Maybe I'm old fashioned but I'd think a blog post should have sufficient context in the intro in standalone fashion