URL Inspection live render vs. Rich Results Test

Both show "Googlebot's rendered HTML," but they're not interchangeable. Compared output on 64 JS pages.

— Both use evergreen Chromium render ▓▓▓▓▓▓▓▓▓▓
— Rich Results Test: no auth, public URLs only ▓▓▓▓▓░░░░░
— URL Inspection live: respects your property, shows resource-load failures, 6.4% caught blocked JS the RRT missed ▓▓▓▓▓▓▓▓░░

So what: Rich Results Test is the fast, shareable check for schema and basic render on public pages. URL Inspection's live test is the diagnostic one — it surfaces which specific resources Googlebot failed to fetch (the real cause of empty renders). Use RRT to confirm structured data; use Inspection to debug why a render came back blank. Different jobs, same engine.