How to create a QR code
- Choose the content type and fill in the URL, WiFi, contact or other details.
- Under Design, set colours, module and corner styles, and optionally add a logo and frame text.
- Check the scan warnings, download SVG or PNG, and test with a phone before printing.
QR code content formats
A QR code only stores text; the phone decides what to do from its format. Use the right format and a scan joins WiFi, saves a contact or opens WhatsApp directly.
| Type | Format | After scanning |
|---|---|---|
| URL | https://… | Opens a web page; the most common type |
| WiFi | WIFI:T:WPA;S:…;P:…;; | Joins the network straight from the camera on Android and iOS |
| vCard contact | BEGIN:VCARD … END:VCARD | Saves a contact; good for business cards and trade shows |
| mailto:…?subject=… | Opens a new email with the subject filled in | |
| SMS | SMSTO:number:text | Opens a text message with the content filled in |
| Phone | tel:+86… | Starts a call |
| https://wa.me/86…?text=… | Opens a WhatsApp chat; popular with overseas buyers | |
| Location | geo:lat,lng | Opens the coordinates in a map |
| Event | BEGIN:VEVENT … | Adds a calendar event; good for fairs and launches |
Choosing the error correction level
Higher levels survive more damage or covering, at the cost of a denser pattern. A logo covers the middle, so the studio switches to level H automatically.
| Level | Recovers about | Use for |
|---|---|---|
| L | 7% | Long content, clean print, no logo |
| M | 15% | Default; most URLs and cards |
| Q | 25% | Outdoor and packaging that may wear |
| H | 30% | Required when a logo sits in the middle |
QR code print size guide
Rule of thumb: the code should be about one tenth of the scanning distance and no smaller than 2 cm. Longer content means denser modules and a larger print; test with two or three phones before printing.
| Where | Scan distance | Code size |
|---|---|---|
| Business card, flyer | 20–30 cm | 2–3 cm |
| Packaging, manual | 30–50 cm | 3–5 cm |
| Booth poster | 1–2 m | 10–20 cm |
| Billboard, vehicle | 5–10 m | 50–100 cm |
Frequently asked questions
Is a WiFi QR code safe?
The code contains the network name and password in plain text, so anyone who scans can read the password. Use it for guest networks, not internal ones. The studio runs locally and never uploads the password.
Does it work on iPhone?
Yes. iOS 11 and later and most Android cameras recognise WiFi codes and offer to join.
Do the QR codes expire?
No. These are static codes: the content is inside the code, never routed through our servers, valid forever with unlimited scans. Use a dynamic QR code if you need to change the destination or count scans.
Can I use them commercially?
Yes: free, no watermark, commercial use allowed. Your logo is composed in your browser and never uploaded.