QR Code 300 DPI

Why 300 DPI is Standard

• ✓ Professional Quality: Sharp and clear at all print sizes
• ✓ Widely Supported: All print vendors accept 300 DPI
• ✓ Reliable Scanning: QR readers have no trouble with this quality
• ✓ ISO Standard: ISO/IEC 18004 recommends 300 DPI for print
• ✓ Cost Effective: Balances quality and file size

300 DPI Specifications

Pixel Dimensions at 300 DPI

Industry Applications

Retail & Packaging

• Product labels
• Box inserts
• Shipping labels
• Price tags

Business

• Business cards
• Invoices & receipts
• Certificates
• Marketing materials

Healthcare & Logistics

• Medical records
• Inventory tracking
• Asset labels
• Supply chain codes

Generation for 300 DPI

Python

import qrcode
from PIL import Image

def generate_300dpi_qr(url, size_inches=1):
    """Generate 300 DPI QR for professional print."""
    
    # 300 DPI = 300 pixels per inch
    pixels = size_inches * 300
    
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=10,
        border=2,
    )
    qr.add_data(url)
    qr.make(fit=True)
    
    img = qr.make_image(fill_color='black', back_color='white')
    
    # Resize to exact dimensions
    img = img.resize((int(pixels), int(pixels)), Image.Resampling.LANCZOS)
    
    # Save with DPI metadata
    img.save('qr_300dpi.png', dpi=(300, 300))
    print(f'Generated: {size_inches}" QR at 300 DPI')

# Generate 1" square at 300 DPI (300×300 pixels)
generate_300dpi_qr('https://example.com', size_inches=1)

Command Line ImageMagick

# Convert existing QR to 300 DPI (1" size)
convert qrcode.png -density 300 -units PixelsPerInch qr_300dpi.png

# Multiple sizes
convert qrcode.png -density 300 -resize 600x600 qr_2inch.png

File Format Options at 300 DPI

Print Ready Checklist

• ☑ Resolution: 300 DPI confirmed
• ☑ Color Space: CMYK for professional printing
• ☑ Size: Verified for intended print dimensions
• ☑ Testing: QR scanned successfully before printing
• ☑ Format: Appropriate for print vendor
• ☑ Margins: 2mm+ white space around QR

Create 300 DPI QR Codes