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What is a QR code?

A QR (Quick Response) code is a two-dimensional barcode that stores information in a grid of black and white squares. When a phone camera or QR reader scans it, the encoded content — a website link, Wi-Fi credentials, a contact card, or plain text — is decoded and presented to the user. Unlike older one-dimensional barcodes that hold a short number, QR codes can store significantly more data, including URLs, structured contact information, and calendar events.

How QR codes work

A QR code encodes your data into a matrix of dark and light modules. Scanning software reads the three large finder patterns in the corners to orient the code, then interprets the remaining modules as data. The QR standard includes error correction, which means a code can still be read even if part of it is smudged, curved, or covered — up to a limit. This is also what allows a logo to be placed in the center without breaking the code, provided the error correction level is high enough.

What you can create with Veyqora

Veyqora supports nine QR types, each encoded in the standard format that phones expect:

• • Website — open a web page, menu, or listing
• • Plain text — share a note, code, or instruction
• • Wi-Fi — join a network without typing a password
• • Contact (vCard) — save contact details to a phone
• • Email — open a pre-addressed message
• • Phone — start a call to a number
• • SMS — prepare a text message
• • Location — open coordinates in a maps app
• • Event — add a calendar entry

Static vs dynamic QR codes

A static QR code stores your information directly inside the code. It cannot be changed after creation, but it never expires and requires no hosting or subscription. A dynamic QR code stores a short redirect link instead of the final content, so the destination can be changed later and scans can be tracked — but it depends on a server, may expire, and is often a paid service. Veyqora creates static QR codes, which are ideal when you want a permanent, no-maintenance code.

Do QR codes expire?

A static QR code itself never expires because the data lives inside it. However, if your code points to a website, its usefulness depends on that destination page staying online. If the page is moved, deleted, or the domain lapses, the QR code will still scan but the link will not work. Veyqora codes are static, so there is no Veyqora service that can shut down and break them.

QR code error correction

Error correction lets a QR code remain readable even when part of it is damaged or obscured. The four levels are L (low, ~7% recovery), M (medium, ~15%), Q (quartile, ~25%), and H (high, ~30%). Higher levels add redundancy, which makes the code denser but more resilient. Veyqora lets you choose the level in the customization panel and automatically uses the highest level when you add a center logo, since the logo covers part of the code.

QR code design and scanning

A QR code is only useful if it scans reliably. Keep the foreground dark and the background light for strong contrast — Veyqora warns you when your colors may be too low contrast. Leave a white quiet zone around the code so scanners can detect the edges. If you add a logo, keep it small relative to the code. Always scan-test at the final printed size and from a realistic distance before you publish or print in bulk.

PNG vs SVG

PNG is a raster image with a fixed pixel size. It is fine for screens, social posts, and small prints. SVG is a vector format, meaning it scales to any size without losing sharpness — making it the better choice for business cards, posters, signs, and packaging. Veyqora lets you download either format from the same preview. When sending files to a professional printer, SVG is usually preferred.