Window Size Overlay
View on Chrome Web StoreChrome will indicate if you already have this installed.
Overview
Window Size Overlay is a simple yet powerful tool for web developers and designers.
Instantly see your browser window size — no need to open DevTools or use clunky inspector tools.
Just glance at the corner of your screen to view:
- the current window size (viewport or full window),
- the device pixel ratio (@DPR),
- and the exact overlay position (freely configurable).
✨ Why you’ll love it:
✅ perfect for responsive design testing
✅ live window size overlay – always visible
✅ customizable position, size and behavior
✅ lightweight, fast and privacy-safe
Works seamlessly in the background and updates in real time.
Tags
Privacy Practices
✓
Not being sold to third parties, outside of the approved use cases
✓
Not being used or transferred for purposes that are unrelated to the item's core functionality
✓
Not being used or transferred to determine creditworthiness or for lending purposes
🔐 Security Analysis
This extension hasn't been security-scanned yet.
Similar Extensions
More in Productivity/developer →
Capture a screenshot of your current page in entirety and reliably—without requesting any extra permissions!
브라우저에서 라온시큐어의 PC보안 기능을 사용하기 위한 확장 프로그램입니다.
Adds React debugging tools to the Chrome Developer Tools.
Created from revision 3cde211b0c on 10/20/2025.