Calibrly
Upload an HTML file and inspect every pixel of it
What it does
Calibrly is a browser-based inspection tool for HTML files. Upload a file and inspect spacing, typography, colors, the box model, and WCAG contrast ratios — then export what you find as computed CSS or Tailwind utility classes. No install, no extension, no DevTools digging. Built for developers and designers who need to check someone else's markup fast. Free plan: 5 uploads per month.
Calibrly lets you visually calibrate any HTML file — typography, spacing, box model, WCAG contrast — directly in your browser. Free tier included, no credit card required.
A powerful, browser-based HTML inspector that lets you analyze and inspect any HTML file directly in your browser. Just open .html and inspect without DevTools. A simple tool designed for everyone. Sign in, drop any HTML file and instantly inspect spacing, typography, colors, and contrast — no setup, no DevTools required. A draggable pill with four icon tools that appears when your HTML loads — drag it anywhere, and hover any button for a tooltip. Hover over any element to see a live blue highlight overlay with detailed info. Keyboard shortcut ( I ) Click any two elements to see the pixel gap (↔ horizontal, ↕ vertical). Keyboard shortcut ( M ) Open the full keyboard shortcuts overlay to…from calibrly.com
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