qr

Generate a QR code from text and display it in the terminal or save it as an image file.

Usage

openGyver qr <text> [flags]

Flags

Flag	Short	Type	Default	Description
--output	-o	string		Output file path (.png or .svg). Omit for ASCII terminal output
--size		int	256	PNG image size in pixels
--level		string	L	Error correction level: L, M, Q, H
--invert		bool	false	Invert colors (light-on-dark for dark terminals)
--help	-h			Help for qr

Arguments

Argument	Required	Description
text	Yes	The text or data to encode in the QR code

Output Modes

Mode	Description
Default (no -o)	Prints QR code as Unicode block characters in the terminal
-o file.png	Saves as PNG image (use --size to set pixel dimensions)
-o file.svg	Saves as SVG vector graphic

Error Correction Levels

Level	Recovery	Description
L	7%	Default -- smallest QR code
M	15%	Medium recovery
Q	25%	Higher recovery
H	30%	Maximum recovery, largest QR code, most resilient

Examples

# Display a URL as ASCII QR code in the terminal
openGyver qr "https://example.com"

# Save as PNG image
openGyver qr "Hello World" -o qr.png

# Save as PNG with custom size (512x512 pixels)
openGyver qr "Hello World" -o qr.png --size 512

# Save as SVG vector graphic
openGyver qr "Hello World" -o qr.svg

# Encode Wi-Fi credentials with maximum error correction
openGyver qr "wifi:WPA;S:MyNetwork;P:secret;;" --level H

# Invert colors for dark terminal backgrounds
openGyver qr "some data" --invert

# Generate a large, high-quality PNG
openGyver qr "https://myapp.com/download" -o download-qr.png --size 1024 --level H

# Encode a vCard contact
openGyver qr "BEGIN:VCARD\nVERSION:3.0\nN:Doe;John\nTEL:+1234567890\nEND:VCARD" -o contact.png

# Generate a small QR code for a short text
openGyver qr "HELLO" -o small.png --size 128 --level L

# Save as SVG for print (scales perfectly)
openGyver qr "https://docs.example.com" -o print-qr.svg --level M