Comprehensive Guide to QR Code Types & Customization

QR (Quick Response) codes are two-dimensional barcodes that pack far more data than a standard barcode, and quixqr.com lets you generate several distinct payload types entirely in your browser. Choosing the right type, and pairing it with sensible design choices, is the difference between a QR code nobody can scan and one that works flawlessly from a menu, poster or business card.

URL QR Codes

The most common QR code type simply encodes a web address, so a phone's camera opens the linked page the moment it's scanned. Always use a full, valid URL beginning with https:// so mobile browsers recognize it immediately, and keep the destination page mobile-friendly since most scans happen on a phone. Shortening very long URLs before encoding keeps the resulting QR code visually simpler and slightly easier to scan at a distance.

WiFi QR Codes

A WiFi QR code lets a guest join your network by pointing their camera at the code instead of typing a password, which is ideal for cafés, offices, and Airbnb-style rentals. Enter the exact network name (SSID) and password, choose the correct encryption type (WPA/WPA2 is standard on virtually all modern routers), and mark the network as hidden only if it genuinely doesn't broadcast its SSID.

vCard QR Codes

vCard codes encode a full contact card (name, phone, email, company and website), so scanning the code offers to save the contact directly to the recipient's phone, no manual typing required. This is the single most useful QR type for business cards, conference badges, and email signatures, since it replaces the tedious process of manually adding a new contact from a printed card.

Location QR Codes

Location QR codes drop a pin at a specific latitude and longitude, opening the recipient's default maps app to those coordinates when scanned. They're well suited to event flyers, real estate signage and delivery instructions where a street address alone might be ambiguous. Use the built-in address search or drag the marker directly on the map to fine-tune the exact point before generating the code.

Plain Text QR Codes

The plain text type encodes any string of text directly, such as instructions, a coupon code, or a short message, without linking anywhere. It's a flexible fallback for content that doesn't fit a URL, contact or WiFi format, and because the text is embedded directly in the code, it will still display even on a phone with no internet connection.

Print Contrast Best Practices

QR codes are read by detecting contrast between dark and light modules, so the single biggest scan-reliability factor is contrast, not color choice. Keep foreground and background colors at least a few shades apart in brightness, since quixqr.com's built-in contrast warning flags combinations that are too close to reliably scan. For printed materials, avoid placing a QR code over a busy photo background, leave a quiet margin of blank space around the code, and test a printed proof with two or three different phone models before mass-printing.

Error Correction Levels (L, M, Q, H)

Every QR code is generated with a built-in error correction level that determines how much of the code can be damaged, obscured, or covered by a logo while still scanning correctly:

• L (Low): recovers about 7% of the code; use only for clean, undamaged digital displays.
• M (Medium): recovers about 15% of the code; a solid, general-purpose default for most use cases.
• Q (Quartile): recovers about 25% of the code; recommended once you add a logo or decorative styling.
• H (High): recovers about 30% of the code; best for printed materials, outdoor signage, or a larger logo overlay.

Logo Insertion Guidelines

Adding a logo to the center of a QR code is a great way to reinforce your brand, but it does cover part of the underlying data pattern. Keep the logo small (roughly 20–25% of the code's total width), use a higher error correction level (Q or H) whenever a logo is present, and always scan-test the final code with several different phones before publishing, since a logo size that looks fine on screen can occasionally push a code past the point of reliable scanning.