Free Online Protractor is engineered to be 100% responsive across mobile web browsers. Field technicians, inspectors, and students can snap photos on iPad or Android tablets and take instant precision angle readings on site.
1. Touch Gesture Controls for Handles
Drag handles smooth on touch screens with enlarged touch hit areas (44px target sizes). The 4x Loupe scope offset ensures your fingertip does not obscure the line underneath.
2. Multi-Touch Pinch Zoom and Pan
Use standard two-finger pinch gestures to zoom into high-resolution technical photos. Switch to the Pan tool to scroll across large schematics effortlessly.
3. Saving & Sharing Measurements on Mobile
Save measurements to the local side drawer and export CSV or JSON logs directly to your device storage or cloud drives.
Key Technical Takeaways
- Touch hit areas are optimized so fingers never obscure the vertex apex.
- Fully compatible with iPad Safari, Android Chrome, and Microsoft Surface touch screens.
- No app store download required—runs instantly in mobile browsers.