A quick, full-featured example of how to build a quiz system with anti-cheat, PDF certificates, QR verification, and smart scoring — all in a single Next.js app.
Every feature you'd expect from a production-grade quiz system.
Tab-switching detection, copy/paste blocking, and right-click prevention keep the quiz fair and trustworthy.
Passers receive a beautifully designed, branded PDF certificate — ready to download and share.
Graded server-side to prevent tampering. Questions are randomised from a pool of 120 each attempt.
Every certificate carries a unique QR code. Employers can scan it to confirm authenticity instantly.
A public verification URL shows candidate name, score, date, and whether the certificate is genuine.
Didn't pass? The platform identifies your weak topics and links you to free FreeCodeCamp resources.
Uses PDFKit to dynamically generate certificates entirely on-the-fly in memory, requiring 0MB of disk space.
Add your shiny new certificate directly to your LinkedIn profile with a single click after passing.
Review exactly which questions you got wrong, and see the correct answers with explanations.
40 randomised questions · 10-minute timer · Instant PDF certificate
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