Wappalyzer
SportsIdentifies the technology stack behind any website.
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.
Design Overlay Tool is freemium. The free tier is usable for evaluation; compare paid tiers before committing a team.
Identifies the technology stack behind any website.
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Design Overlay Tool offers paid plans.
Design Overlay Tool is published by . As with any extension, review the permissions it requests before installing and remove it if you stop using it.
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