What is UI Builder + Mockup tool?
UI Builder is a Chrome extension for quick, sketch-style wireframes directly in your browser. Drag buttons, inputs, headers onto any page or blank canvas. Edit text, resize, screenshot, and share — perfect for fast feedback, live demos, and client calls.
Problem
Users currently create UI mockups using separate design tools like Sketch or Figma, requiring switching between browser and design software which disrupts workflow and lacks real-time context of live websites
Solution
Chrome extension (design tool) enabling sketch-style wireframes directly on live websites. Users drag UI elements onto pages, edit text, resize components, and share screenshots
Customers
Web designers, front-end developers, and product managers needing rapid prototyping during client calls or live website modifications
Unique Features
In-browser editing overlays, live website integration, sketch-style aesthetic for quick concepting, real-time collaboration features
User Comments
Saves hours in client feedback loops, Perfect for quick demos during calls, Integrates seamlessly with Chrome, Surprisingly intuitive for non-designers, Lacks advanced customization but great for rough drafts
Traction
5,000+ Chrome extension installs, 4.7/5 rating from 387 reviews, Featured in Product Hunt's Top 20 Design Tools (2023), Founder has 2,300 LinkedIn followers
Market Size
Global UI/UX design software market valued at $7.6 billion in 2023 (Grand View Research)
