The latest articles on DEV Community by Sebastian Casvean (@onestqr). https://dev.to/onestqr https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4025961%2Fa19b2c02-06de-452f-8d6e-06eed1cd811a.jpg https://dev.to/onestqr en Sebastian Casvean Sun, 12 Jul 2026 11:09:44 +0000 https://dev.to/onestqr/why-im-building-a-qr-code-platform-and-sharing-the-journey-l0c https://dev.to/onestqr/why-im-building-a-qr-code-platform-and-sharing-the-journey-l0c <p>Hello DEV 👋</p> <p>Hi everyone!</p> <p>I'm a solo developer from Madrid, Spain, and I've recently started building OnestQR, a QR code platform focused on one simple idea: software should make people's lives easier, not more complicated.</p> <p>Over the past few months I've found myself diving into things I never expected to learn—from QR code specifications and edge caching with Cloudflare Workers to PostgreSQL, analytics and user experience.</p> <p>One thing I've discovered is that QR codes are much more interesting than they first appear. Behind every scan there's routing, caching, performance, security and a surprising number of design decisions.</p> <p>That's what I want to write about here.</p> <p>Over the coming weeks I'll be sharing practical articles on topics like:</p> <p>How dynamic QR codes actually work<br> Building a fast redirect service with Cloudflare Workers<br> QR code best practices<br> Common mistakes when generating QR codes<br> Analytics and privacy considerations<br> Lessons learned while building a SaaS as a solo developer</p> <p>I'm not here to sell anything. I'm here to share what I learn, learn from others, and hopefully contribute something useful to the community.</p> <p>If you've built anything related to QR codes, caching, PHP, PostgreSQL or SaaS products, I'd love to hear about your experience.</p> <p>Looking forward to being part of the community! 🚀</p> webdev productivity discuss saas