Design Overlay Tool

Overlay design mockups on web pages for pixel-perfect implementation verification

★ IDEAL FOR DEVELOPERS WHO: • Work with Figma designs or PDF mockups • Need to verify pixel-perfect implementation • Want to quickly compare design vs. reality • Build responsive websites across multiple breakpoints ★ KEY FEATURES: 📸 Dual Upload Modes - Manual Upload: Assign any image to any breakpoint with full control - Bulk Upload: Auto-detect and map multiple images at once by dimensions 📱 Smart Responsive Detection Automatically switches designs as you resize your browser: • Mobile: 390px • Tablet: 768px • Desktop Medium: 1280px • Desktop Large: 1440px • Desktop XL: 1600px 🎯 Precision Controls - Opacity slider (0-100%) to blend design with implementation - Arrow key nudging: 1px precision or 10px with Shift - Click-through overlay - never blocks page interaction - Keyboard shortcuts for instant toggle and opacity control 💾 Persistent State All your settings, images, and positions are saved automatically. Resume your work exactly where you left off. ★ HOW IT WORKS: 1. Export your design mockups from Figma or PDF 2. Upload images (bulk auto-detection or manual assignment) 3. Navigate to your web page 4. Enable overlay and adjust opacity 5. Fine-tune alignment with arrow keys 6. Compare and perfect your implementation ★ PERFECT FOR: - Frontend developers checking design accuracy - QA teams verifying responsive layouts - Design handoff validation - Client presentation and approval - Pixel-perfect implementation verification ★ SMART AUTO-DETECTION: Bulk upload handles DPI scaling automatically. Export 150 DPI PDFs and the extension intelligently maps them to the correct breakpoints. ★ KEYBOARD SHORTCUTS: Configure custom shortcuts at chrome://extensions/shortcuts: - Toggle overlay on/off - Increase/decrease opacity by 10% - Plus arrow keys for precise positioning No accounts. No subscriptions. No tracking. Just a simple, powerful tool to help you build better websites. Perfect for agencies, freelancers, and teams who care about design quality.