QR Code Generator CLI

A simple, fast, and powerful command-line QR code generator built with Go.

Features

• Generate QR codes from text, URLs, or files
• NEW! Encode images as base64 data URIs
• NEW! Generate WiFi QR codes for easy connection
• NEW! Create QR codes from vCard contact files
• NEW! ASCII QR preview in terminal
• NEW! Batch processing multiple inputs
• Customizable size and error correction levels
• PNG output format
• URL validation
• Automatic directory creation
• Fast and lightweight
• Quiet mode support
• File overwrite protection

Installation

Option 1: Install from source

git clone https://github.com/yourusername/go-qrgen-cli.git
cd go-qrgen-cli
go mod tidy
go install

Option 2: Build locally

git clone https://github.com/yourusername/go-qrgen-cli.git
cd go-qrgen-cli
go mod tidy
go build -o qrgen main.go

Usage

Basic Examples

# Generate QR from text
qrgen -t "Hello World!"

# Generate QR from URL
qrgen -u "https://github.com/yourusername"

# Generate QR from file
qrgen -f input.txt

# NEW! WiFi QR code
qrgen -w "MyWiFi:password123:WPA" -o wifi.png

# NEW! Image to base64 QR
qrgen -i company_logo.png -o logo_qr.png

# NEW! Preview in terminal
qrgen -t "Preview Test" --preview

# Custom output filename and size
qrgen -t "My Text" -o my_qr.png -s 512

# High quality error correction
qrgen -u "https://important-site.com" -q highest

Advanced Examples

# Contact QR from vCard file
qrgen --vcard contact.vcf -o contact_qr.png

# Batch processing URLs
echo "https://github.com" > urls.txt
echo "https://google.com" >> urls.txt
qrgen -f urls.txt --batch

# Large WiFi QR with preview
qrgen -w "CoffeeShop:free123:WPA" -s 600 --preview -o cafe_wifi.png

# Process image with high quality
qrgen -i screenshot.png -q highest -s 800 -o screenshot_qr.png

# Silent batch processing
qrgen -f company_urls.txt --batch --quiet

Command Line Options

Flag	Long Form	Description	Default
-t	--text	Text to encode in QR code	-
-u	--url	URL to encode in QR code	-
-f	--file	File containing text to encode	-
-i	--image	NEW! Image file to encode as base64	-
-w	--wifi	NEW! WiFi credentials (SSID:PASSWORD:SECURITY)	-
	--vcard	NEW! vCard file for contact info	-
	--batch	NEW! Batch process multiple inputs	false
-o	--output	Output file name	qr.png
-s	--size	QR code size in pixels	256
-q	--quality	Error correction level	medium
	--preview	NEW! Show ASCII QR preview	false
	--quiet	Quiet mode (no output messages)	false
-h	--help	Show help message	-
-v	--version	Show version	-

Examples

You can test this QR code, which will lead to github.com/fdhliakbar

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