Hey Product Hunt 👋 I'm Milan, a solo developer. I built Calibrly because I kept running into the same annoying loop: someone sends me an HTML file — a template, an email, a handoff from a designer — and to check whether the spacing and type are actually right, I'd open DevTools and spend ten minutes clicking through the elements tree. Calibrly does that in one step. You drop in the HTML file, hover over anything, and see the spacing, typography, colors, box model, and WCAG contrast ratio right there. When something's off, you export the fix as computed CSS or Tailwind classes. What it does today: 🔍 Hover inspection with a live tooltip 📏 Measure mode — pixel distance between any two elements 🎨 Color + WCAG AA/AAA contrast check 📦 Box model breakdown 📤 Export to CSS or Tailwind Who it's for: front-end devs reviewing handoffs, designers checking implementation, anyone auditing markup they didn't write. It's free — 5 uploads a month, no card, Google sign-in only. There's a paid plan coming, but I wanted to see how people actually use this before I charge for it. I'd really like feedback on two things: does the inspection tooltip show what you'd actually want to see, and is the upload flow the right model — or would you rather this were a browser extension that works on live sites? That's the next thing I'm considering building and I genuinely don't know which way to go. Thanks for taking a look 🙏

Calibrly

Upload an HTML file and inspect every pixel of it

Upload an HTML file and inspect every pixel of it