QR Code Tool

Generate QR codes for URLs, text, WiFi credentials, contact cards, and more. Use when creating scannable links for marketing materials, sharing WiFi password...

Security Scan

The skill is an instruction-only QR code generator whose requirements and instructions match its stated purpose and do not request unrelated credentials or system access.

Purpose & Capability

The name/description (QR code generation for URLs, WiFi, vCards, styled images, batch jobs) aligns with the provided instructions and examples. All code samples and the listed dependency (qrcode[pil]) are appropriate for this functionality.

Instruction Scope

SKILL.md only contains local code examples (Python) that create image files, compose QR payloads (including WiFi/vCard formats), and manipulate images. The instructions do not read unrelated files, environment variables, or send data to external endpoints.

Install Mechanism

There is no install spec and no downloads; the doc recommends installing the public pip package qrcode[pil], which is proportionate for the stated functionality. No extracted archives or external URLs are used.

Credentials

The skill requests no environment variables, credentials, or config paths. Examples accept sensitive inputs (e.g., WiFi password) but those are user-supplied and not read from the environment.

Persistence & Privilege

Skill is not always-enabled and does not request persistent privileges or modify other skills or system-wide settings. Autonomous invocation is allowed (platform default) but not combined with any elevated access.

Assessment

This skill is instruction-only and appears coherent. Before running the code: (1) verify and run examples locally in a safe environment (you’ll need Python and pip), (2) review any inputs you pass (e.g., WiFi passwords or contact details) so you do not accidentally expose secrets, and (3) install the qrcode[pil] package from PyPI using pip in a virtualenv to avoid affecting your system Python. If the skill came from an unknown source, inspect the SKILL.md yourself before use.

QR Code Generator

Create QR codes for URLs, WiFi, contacts, and more.

When to Use

• Creating scannable links for print materials
• Sharing WiFi credentials securely
• Generating digital business cards
• Creating quick app download links
• Sharing locations or maps
• Event check-in codes

Quick Start

Basic URL QR Code

import qrcode

def generate_qr(data, output_path='qr_code.png'):
    """Generate simple QR code"""
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_L,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)
    
    img = qr.make_image(fill_color="black", back_color="white")
    img.save(output_path)
    return output_path

# Usage
generate_qr('https://example.com', 'website_qr.png')

WiFi QR Code

def generate_wifi_qr(ssid, password, security='WPA', output='wifi_qr.png'):
    """
    Generate WiFi connection QR code
    Format: WIFI:S:ssid;T:security;P:password;;
    """
    wifi_string = f"WIFI:S:{ssid};T:{security};P:{password};;"
    return generate_qr(wifi_string, output)

# Usage
generate_wifi_qr('MyHomeNetwork', 'secret123', 'WPA')
# Scan to auto-connect to WiFi

Contact Card (vCard)

def generate_vcard_qr(name, phone, email, output='contact_qr.png'):
    """Generate vCard QR code"""
    vcard = f"""BEGIN:VCARD
VERSION:3.0
FN:{name}
TEL:{phone}
EMAIL:{email}
END:VCARD"""
    return generate_qr(vcard, output)

# Usage
generate_vcard_qr('John Doe', '[phone]', '[e-mail]')

Styled QR Code

def generate_styled_qr(data, output='styled_qr.png', **kwargs):
    """Generate QR with custom styling"""
    qr = qrcode.QRCode(
        version=kwargs.get('version', 1),
        error_correction=getattr(
            qrcode.constants, 
            f"ERROR_CORRECT_{kwargs.get('error_correction', 'M')}"
        ),
        box_size=kwargs.get('box_size', 10),
        border=kwargs.get('border', 4),
    )
    qr.add_data(data)
    qr.make(fit=True)
    
    # Custom colors
    fill_color = kwargs.get('fill_color', 'black')
    back_color = kwargs.get('back_color', 'white')
    
    img = qr.make_image(fill_color=fill_color, back_color=back_color)
    img.save(output)
    return output

# Styled examples
generate_styled_qr('https://mysite.com', 'blue_qr.png', 
                   fill_color='blue', back_color='lightblue')

Error Correction Levels

Level	Correction	Use Case
L	~7%	Clean environments
M	~15%	Default, good balance
Q	~25%	Dirty/damaged possible
H	~30%	Logos/overlays on QR

Advanced Features

Batch Generate

def batch_generate(urls, output_dir='./qr_codes'):
    """Generate QR codes for multiple URLs"""
    import os
    os.makedirs(output_dir, exist_ok=True)
    
    generated = []
    for i, url in enumerate(urls, 1):
        output = f"{output_dir}/qr_{i:03d}.png"
        generate_qr(url, output)
        generated.append(output)
    
    return generated

# Usage
urls = [
    'https://product1.com',
    'https://product2.com',
    'https://product3.com'
]
batch_generate(urls)

Add Logo to Center

from PIL import Image

def add_logo_to_qr(qr_path, logo_path, output_path):
    """Add logo to center of QR code"""
    qr_img = Image.open(qr_path)
    logo_img = Image.open(logo_path)
    
    # Resize logo to fit in center
    box_size = min(qr_img.size) // 5
    logo_img = logo_img.resize((box_size, box_size))
    
    # Calculate position
    pos = ((qr_img.size[0] - box_size) // 2,
           (qr_img.size[1] - box_size) // 2)
    
    # Paste logo
    qr_img.paste(logo_img, pos, logo_img if logo_img.mode == 'RGBA' else None)
    qr_img.save(output_path)

Dependencies

pip install qrcode[pil]