

UI Builder – Mockup Tool
UI Builder – Mockup Tool is a fast Web Wireframe & Web Design Tool that lets you sketch UI layouts on any live page or on a new blank page. Quickly show clients possible design changes directly on the live website, without switching tools.
Features
Properties
- Lightweight
Features
- Auto Layout
- Live Preview
- No Tracking
- Create UI Components
- No Coding Required
- Ad-free
- Design handoff
- Support for Layers
- Works Offline
- Color Picker
- UI Design
- Wireframing
- Browser extension
- Sketching
- Prototyping
Tags
- Mockups
- Google Chrome Extension
- Web Design
- business-analytics
- screenshots
- design-tools
- Web Development
- canvas
- User interface
UI Builder – Mockup Tool News & Activities
Recent activities
- ghalibputra8 liked UI Builder – Mockup Tool
alx-hnld added UI Builder – Mockup Tool as alternative to Balsamiq Wireframes and Figma- alx-hnld added UI Builder – Mockup Tool
- POX updated UI Builder – Mockup Tool
UI Builder – Mockup Tool information
What is UI Builder – Mockup Tool?
UI Builder – Mockup Tool is a fast Web Wireframe & Web Design Tool that lets you sketch UI layouts on any live page or on a new blank page. Quickly show clients possible design changes directly on the live website, without switching tools.
🔵 Built for designers, product owners, developers and business analysts who need instant mockups without leaving the page. Drag-and-drop hand-drawn widgets, resize them smoothly, edit text in place, snap a quick screenshot, and share — all 100 % locally in your browser for rapid prototyping.
🔹 Instant wireframes – turn any site (or a blank canvas) into a playground for mockups 🔹 True WYSIWYG – change button labels, headers and colours right on the screen 🔹 Keyboard friendly – Ctrl/? + C/V to duplicate, Delete to remove, Esc to cancel 🔹 Pixel-perfect exports – save the selected area as PNG or copy a screenshot to clipboard 🔹 Privacy first – no network calls, analytics or trackers; data lives in chrome.storage.local 🔹 Lightweight – injected only on demand, keeping everyday browsing fast
- Install & pin the toolbar icon
- Click UI Builder – the palette appears
- Drag widgets (buttons, headers, inputs, frames, dividers…) onto the page or blank canvas
- Resize / recolour until it looks right
- Press the disk icon, draw a marquee, confirm ? – get your PNG or paste straight to Slack / Figma / Jira
Perfect for: 🔹 quick idea sketching before opening heavy design tools 🔹 annotating client websites during live calls 🔹 teaching web-design basics without extra software 🔹 creating product screenshots for specs and tickets







