UI Inspector

UI Inspector — the fastest way to measure, inspect, and reverse-engineer any interface. Whether you're looking at a live website or a flat screenshot, UI Inspector gives you pixel-perfect measurements in one click. Two powerful modes, one tool: 🔍 LIVE DOM INSPECTOR — free, forever Turn any webpage into an interactive measuring canvas: • Hover to highlight any element and read its exact size • Draw measurements between anything — margins, padding, gaps • Automatic gap lines reveal the spacing between elements • Zoom in for pixel-level precision Stop guessing spacing or digging through DevTools for every value. 🖼️ IMAGE ANALYSIS — the standout feature Got a design with no code behind it? A Figma export, an app screenshot, a competitor's landing page, a PDF mockup? Just drop the image in. Our computer-vision engine automatically: • Detects every UI component — buttons, cards, text, inputs • Measures sizes, spacing, and alignment • Generates a clean annotated overlay you can read at a glance • Exports structured component data as JSON Reverse-engineer any design in seconds — even when there's nothing in the browser to inspect. ✨ BUILT FOR • Designers — verify spacing and specs against the mockup • Developers — pull exact measurements straight into your CSS • QA — catch pixel drift between design and build • Everyone — measure a UI you can't get the source for 🎁 START FREE Live DOM inspection is always free. Image analysis includes a 30-day free trial — no credit card required. Install, pin it, and start measuring. — Privacy: uploaded images are processed on demand and never stored — they're deleted the moment analysis finishes.