PagePulse

I built a tool that takes a screenshot of any landing page and returns structured UX feedback. You paste a URL, it captures a full-page screenshot, draws a percentage-based coordinate grid on top of it, and sends everything to the Anthropic API. The response comes back as numbered markers pinned to specific locations on the page, each with a category label and a plain-English explanation of what's working or broken and why.

The eight categories it covers are visual hierarchy, CTA effectiveness, copywriting, cognitive load, trust signals, conversion psychology, information architecture, and user flow. I picked those because they map to the most common reasons conversion rates are low — and they're concrete enough that the model can be specific rather than generic. The coordinate grid was the trickiest part: I draw it onto the screenshot with sharp before sending to Claude so the model has a spatial reference when placing markers, rather than just describing regions verbally. The model also gets a curated UX knowledge base injected at inference time — distilled from Nielsen Norman, Baymard, and a few hundred conversion case studies — so the feedback references established principles rather than generic AI pattern-matching.

I built this because I was about to launch my own page and didn't want to do a manual review by hand every time. It won't replace a proper usability study, but it's fast enough to surface obvious issues before you ship. It's at pagepulse.page — first analysis is free, signup required.