How to Create a QR Code for WiFi, a Link, or a Business Card

A QR code is just a compact way to encode text — a URL, WiFi credentials, or a contact card — into a pattern a camera can read instantly. The tricky part isn't generating one, it's generating the right kind for what you actually need.

The three QR codes people actually need

• URL QR code: points to a webpage — a menu, a portfolio, a payment link. This is the one most people mean by "QR code."
• WiFi QR code: encodes a network name and password so a phone camera can join the network without anyone typing anything — useful for guest WiFi at a home, office, or café.
• Contact / V-Card QR code: encodes a full contact card, so scanning it offers to save a name, phone number, and email directly — common on business cards and event badges.

How to create one

Open the QR Code Studio, choose what you're encoding (link, WiFi, or contact card), fill in the details, and download the result as a high-resolution PNG. For anything getting printed — a poster, a table tent, a business card — always download at the highest resolution available and test-scan it at the actual printed size before running off copies, since a QR code that scans fine on a screen can fail at a smaller printed size.

Design tips that actually matter

• Contrast first: a QR code needs strong contrast between the pattern and background to scan reliably — light gray on white will fail more often than it should.
• Leave a quiet zone: the blank margin around a QR code isn't wasted space, it's what lets a camera find the edges of the pattern. Don't crop it tight.
• Test before you print 500 of them: scan the code with two or three different phones before committing to a print run.

Custom colors are fine as long as contrast stays high — a code that looks nice but doesn't scan reliably has failed at its one job.