Dear Reader, Welcome to

My name is Rajeev Singh. I’m the designer and editor of this website.

QRCodeBit is a simple and easy to use online tool to generate and scan QR codes. The QR code generator tool supports generating different types of QR codes like Text, URL, Email, Phone No, SMS, Geo Location, Wifi, and VCards. The QRCode scanner tool allows you to scan a QR code image using your web cam or mobile camera and displays the data encoded in the QR code.

I also have a blog named CalliCoder where I write about programming languages, web development, and system design. If you’re a programmer, you should definitely check that out.

What powers this blog?

This website is powered by GatsbyJs, a static site generated based on React. GatsbyJs is awesome. It is fast, SEO optimized, and developer friendly. It contains built-in plugins for almost any task. If you’re building a new website, I highly recommend you to try out GatsbyJs.

This website is hosted on Netlify, a cloud hosting platform for static websites.

How can I contact you?

I love good emails. You can get in touch with me at You can also let me know your thoughts in the comment section below.