Screen Markup for Windows

Draw on your PC screen from your phone or tablet

Screen Markup lets you write, draw and point on your Windows PC screen from the phone or tablet already in your hand. Teachers can annotate a slide while walking round the classroom, trainers can circle the exact button they mean, and presenters can highlight a chart on a Teams, Zoom or Google Meet call without going back to the desk.

How it works: Install the small Windows app (about 7 MB). It shows a QR code and a six-character code. Scan the code, or type it into on any iPhone, iPad, Android phone or Android tablet. The browser page opens straight away with a live view of your PC screen. There is nothing to install from an app store.

Features: live view of your PC screen on the phone or tablet; smooth ink with pens, highlighters, straight lines, arrows and shapes, plus undo and clear; mouse mode to click through slides and move between apps from across the room; click-through ink that doesn't get in the way of normal PC use; fade the live view when you only need the pad; works on the same Wi-Fi, a different Wi-Fi or mobile data with no router or firewall setup; ink shows up in Teams, Zoom, Google Meet and OBS shares and recordings; automatic update check on start.

Private by design: only devices with your six-character code can connect. The screen picture and input travel through an encrypted relay and are never stored. Change the code at any time or switch off mouse control.

Who it's for: teachers and lecturers, online tutors, corporate trainers, sales and support staff giving demos, streamers and YouTubers, and anyone who wants a cheap, wireless alternative to a graphics tablet or interactive whiteboard.

Licence: 7-day free trial, then 10 GBP + VAT per year or 25 GBP + VAT once for lifetime use.

Requirements: Windows 10 or 11 (64-bit), main monitor. Controller: any modern phone or tablet browser. Developer: RSW Digital Ltd. Website: