QR Code Engine
ClassHost features a zero-dependency, high-speed QR code generation engine built directly into the client application. It allows students and teachers to share website links instantly during classroom presentations.
Why QR Codes in Classrooms?
Web development is highly visual. When a student completes a portfolio or game, projecting the live link on a chalkboard or whiteboard allows:
- The entire class to scan the site and interact with it on their mobile phones.
- Teachers to run live reviews and focus groups.
- Offline school exhibits to display printed QR Codes next to student computer terminals.
Technical Implementation
Instead of sending URL strings to a third-party tracking API (which introduces privacy vulnerabilities and delays), ClassHost generates QR codes completely client-side in your browser.
- No Tracking: We do not route your links through redirection servers. The QR Code contains the direct link to your
yourusername.github.io/project-nameURL. - Pure Vector SVG: The engine compiles the QR matrix into a clean, lightweight XML SVG element. This means it has a file size of under 5 KB, loads instantly, and can scale to any size (billboards or poster boards) without pixelation or loss of quality.
- PNG Converter: For students submitting work to documents, ClassHost uses an HTML5 Canvas to convert the SVG matrix into high-resolution PNG data URLs for local download.
Teachers can use the Presentation Mode button on the classroom dashboard to display a grid of student website previews alongside their QR codes, turning the classroom projector into an interactive project gallery.