Free Custom QR Code Generator: Add Logo, Colors & More

How to Create the Best Custom QR Codes

QR codes bridge the gap between physical marketing and digital experiences. A well-designed QR code on a business card, flyer, event poster, or product packaging can drive traffic, capture leads, and create memorable brand moments - but only if the code is scan-friendly and clearly tells people what to expect when they scan it. You can also generate specialized types like WiFi QR codes for instant guest network access, or vCard QR codes for business cards that save contact info with a scan.

Color Customization and Brand Matching

Our QR code generator lets you set both foreground (dots) and background colors to match your brand guidelines exactly. A few important rules for custom-colored QR codes:

• Always maintain contrast: The foreground (dark) color must be significantly darker than the background (light) for scanners to work reliably. A light gray dot on white or dark blue on black will fail. Aim for at least a 4:1 contrast ratio.
• Never invert colors: Light-on-dark QR codes (e.g., white dots on black) are not universally supported by all scanner apps. Stick to dark dots on a light background.
• Test before printing: After customizing, scan the QR code with multiple smartphone camera apps (iOS native camera, Android native, Google Lens) before committing to a print run.

Adding a Logo to Your QR Code

Embedding your logo in the center of a QR code dramatically improves brand recognition and scannability trust. QR codes use a built-in error correction system specifically designed to allow this - up to 30% of the code's surface can be obscured and the data can still be recovered.

When adding a logo, raise the Error Correction Level to High (H) in the Advanced settings. This tells the encoder to include more redundancy, so the logo area remains fully recoverable. Keep your logo within approximately 25-30% of the total code area for optimal reliability.

Best QR Code Sizes for Different Uses

• Business cards: Minimum 1.5 × 1.5 cm (0.6 × 0.6 inches). Any smaller and most cameras struggle to focus in time.
• Posters and flyers: 3 - 5cm (1.2 - 2 inches). Users will scan from arm's length.
• Billboards and signage: The rule of thumb - QR code size (cm) = viewing distance (meters) × 3. A sign viewed from 5 meters needs a code at least 15cm wide.
• Product packaging: 2 - 3cm minimum with maximum quiet zone (blank white margin). GS1 standards recommend a minimum 1cm quiet zone on all sides.

File Format: When to Use PNG, SVG, or PDF

• PNG: Best for websites, presentations, email signatures, and digital-only uses. High-resolution PNG files look sharp on screen at intended size but will pixelate if dramatically scaled up.
• SVG: Best for all print applications. SVG is a vector format - it scales to any size (billboard or postage stamp) with perfect sharpness and zero quality loss. Always use SVG for printed materials when possible.
• PDF: Ideal for sending to print shops and embedding in design files. PDF preserves vector integrity, is universally openable, and is the preferred delivery format for commercial printers.