UI Builder – Mockup Tool icon

UI Builder – Mockup Tool

by ValmisLab

v1.2.1 Updated Aug 8, 2025 111KiB
CWS
881
Users
★ 5.00
12 reviews
#19960
of 153.1K
tools
#4203 of 47.5K

Description

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 1️⃣ Install & pin the toolbar icon 2️⃣ Click UI Builder – the palette appears 3️⃣ Drag widgets (buttons, headers, inputs, frames, dividers…) onto the page or blank canvas 4️⃣ Resize / recolour until it looks right 5️⃣ 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 🚀 Add "UI Builder – Mockup Tool" Chrome extension today and start wireframing the web in one click!
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Permissions (4)

Permissions

activeTab Can access the current tab when you click the extension clipboardWrite Can write to your clipboard scripting Can inject scripts into web pages storage Can store data locally in your browser

Details

Version 1.2.1
Updated Aug 8, 2025
Size 111KiB
First Seen Mar 27, 2026