Roast Tool

Next.js · Gemini API · Upstash Redis · Vercel

Live (opens in a new tab)

A public AI tool that reviews any landing page from its URL and returns a conversion score, the top issues and 3 quick fixes in about a minute.

What I built

  • Built and shipped it in 6 days, alone.
  • Made each review specific to the page by capturing screenshots at 0, 2 and 5 seconds and parsing its headlines and buttons before the Gemini call.
  • Streamed results with Server-Sent Events and capped use at 5 roasts per hour with Redis rate limiting.