QR Code GeneratorComplete Guide
Everything you need to know about creating effective QR codes with QRStylist.
What Are QR Codes?
QR (Quick Response) codes are two-dimensional barcodes that can store various types of data. Unlike traditional barcodes that only hold numbers, QR codes can encode text, URLs, contact information, WiFi credentials, and much more. The technology is standardized under ISO/IEC 18004:2024.
Invented in 1994 by Denso Wave for tracking automotive parts, QR codes have become ubiquitous in marketing, payments, and information sharing. Modern smartphones can read QR codes instantly using their built-in camera apps - no special app required.
QR codes include built-in error correction, meaning they can still be read even if partially damaged or obscured. This makes them reliable for print materials, product packaging, and outdoor signage.
Types of QR Codes
QRStylist supports 16 different QR code types, each designed for specific use cases. Click any type to access a dedicated generator with detailed documentation.
Links to any website or web page
Connects devices to WiFi networks
Saves contact info to address book
Links to Instagram profile
Links to Facebook page
Links to LinkedIn profile
Links to TikTok profile
Links to YouTube channel
Links to X profile
Crypto payment QR codes
Opens email with address pre-filled
Initiates a phone call
Opens messaging with text ready
Adds events to calendar apps
Opens location in maps
Displays plain text message
Customization Options
Every QR code can be customized to match your brand. The design panel is organized into three tabs: Shapes, Colors, and Logo. Here is what each tab offers:
Shapes tab
Controls the look of the QR code modules and the three corner (finder) patterns.
- Data pattern — Style of the data modules: square, dots, diamonds, rounded, extra-rounded, fluid, extra-fluid, horizontal-fluid, or vertical-fluid.
- Corner shape — Shape of the three position detection patterns (the large "eyes"): Square, Rounded, or Circle.
- Inner corner — Shape of the center of each corner eye: Square or Circle.
- Quiet zone (margin) — White space around the code in modules. Minimum 4 modules is recommended for reliable scanning (ISO/IEC 18004).
Colors tab
Set the QR code and background colors. Choose a color mode:
- Solid — QR Code Color and Background. Single colors for maximum clarity.
- Gradient — Gradient Start, Gradient End, and Background Color for a two-tone QR code.
- Classic — Standard black and white for high contrast and maximum compatibility.
Maintain sufficient contrast between foreground and background for reliable scanning.
Logo tab
Add a logo or icon to the center of your QR code. The code uses high error correction so it stays scannable with a logo.
- Upload Custom Logo — Click, drag and drop, or paste an image. A square image with transparent background works best.
- Social icon — Pick a built-in icon (Facebook, YouTube, X (Twitter), Instagram, LinkedIn, or TikTok) instead of uploading.
- Logo Size — Slider to set how much of the code the logo occupies (percentage).
- Logo Background Margin — Space in pixels between the logo and the surrounding modules.
Why does the QR code look like it grows in the preview when I add more text?
Adding more text means the QR code needs more small squares (modules) to store the data. The white border around the code (the quiet zone) is always kept at a fixed size in modules—at least 4 modules on each side for reliable scanning. So the overall image size stays the same, but as you add content, more of that space is used by the pattern and less by the white border. The border is still 4 modules wide; each module just gets a bit smaller, so the pattern appears to grow. This is normal and your downloaded QR code will scan correctly.
Best Practices
Do
- Test your QR code before printing or publishing
- Maintain high contrast between foreground and background (aim for 4.5:1 ratio per WCAG)
- Use a quiet zone (margin) around the code—at least 4 modules per the standard
- Size appropriately for viewing distance (min 2cm for close-up)
- Include a call-to-action near the code
- Use HTTPS URLs for security and trust
Don't
- Use low contrast colors (e.g., light gray on white)
- Invert colors (dark background, light foreground)
- Print too small or stretch/distort the code
- Place on highly textured or reflective surfaces
- Link to content that's not mobile-friendly
- Use a logo that covers more than 30% of the code
Test your QR code before you use it
Every generated QR code should be fully tested. After downloading, scan it with your phone's camera (or another device your audience might use) and confirm the result is correct.
- URL / link codes — Scan and confirm the correct page opens and loads.
- WiFi codes — Scan from a second device and confirm it joins the right network.
- vCard / contact — Scan and check that the saved contact has the right name, number, and details.
- Other types — Run through the action (SMS, email, event, etc.) to ensure the pre-filled content is correct.
If you're printing the code, test at a similar size (e.g. on screen at the print dimensions) so you catch any readability issues before going to press.
Scanning & Compatibility
QR codes generated by QRStylist are compatible with all modern devices and scanning apps.
iPhone (iOS)
Open the Camera app and point at the QR code. A notification banner appears - tap it to open. Works on iOS 11 and later. For WiFi codes, a "Join Network" prompt appears automatically.
Android
Most Android phones (Android 9+) can scan QR codes directly from the Camera app. Some may require enabling the feature in camera settings. Google Lens is also built into most Android devices for enhanced scanning.
Third-Party Apps
Any QR scanner app can read codes from QRStylist. We use standard formats (URL, WIFI:, MECARD:, VEVENT, etc.) that are universally supported.
Standards & Resources
QR codes and the data formats they encode are built on open standards. Here are the official specifications and helpful resources:
QR Code Standard
The official international standard for QR code symbology, including error correction and encoding.
ISO/IEC 18004:2024QR Code Origins
Learn about the history and development from Denso Wave, the original inventors of QR codes.
QRCode.com (Denso Wave)vCard Specification
The IETF standard for electronic business cards used in vCard QR codes.
RFC 6350 (IETF)iCalendar Format
The standard for calendar event data used in event QR codes (VEVENT format).
RFC 5545 (IETF)Accessibility Guidelines
WCAG guidelines for color contrast, important for creating scannable QR codes.
WCAG 2.1 Contrast (W3C)Contrast Checker Tool
Verify your QR code colors meet accessibility contrast requirements.
WebAIM Contrast Checker