dvcrn QR Code
Generate QR codes from text/URLs and decode QR codes from images.
Capabilities
- Generate QR codes from any text, URL, or data
- Customize QR code size and error correction level
- Save as PNG or display in terminal
- Read/decode QR codes from image files (PNG, JPG, etc.)
- Read QR codes from screenshots
Requirements
Install Python dependencies:
For Generation
pip install qrcode pillow
For Reading
pip install pillow pyzbar
On Windows, pyzbar requires Visual C++ Redistributable.
On macOS: brew install zbar
On Linux: apt install libzbar0
Generate QR Code
python scripts/qr_generate.py "https://example.com" output.png
Options:
--size: Box size in pixels (default: 10)--border: Border size in boxes (default: 4)--error: Error correction level L/M/Q/H (default: M)
Example with options:
python scripts/qr_generate.py "Hello World" hello.png --size 15 --border 2
Read QR Code
python scripts/qr_read.py image.png
Returns the decoded text/URL from the QR code.
Quick Examples
Generate QR for a URL:
import qrcode
img = qrcode.make("https://openclaw.ai")
img.save("openclaw.png")
Read QR from image:
from pyzbar.pyzbar import decode
from PIL import Image
data = decode(Image.open("qr.png"))
print(data[0].data.decode())
Scripts
scripts/qr_generate.py- Generate QR codes with customization optionsscripts/qr_read.py- Decode QR codes from image files