Batch Generate Multiple QR Codes

Batch QR Code Generation

Batch generation creates multiple QR codes in a single workflow. This is essential for inventory management, event ticketing, mass mailing campaigns, and product labeling.

Common Batch Scenarios

Scenario	Data per Code	Typical Volume
Product serial numbers	10-30 chars	100-10,000
Event tickets	URL + ID (50-80 chars)	50-5,000
Inventory labels	SKU + location (20-50 chars)	100-50,000
Marketing campaign URLs	URL + UTM params (80-150 chars)	10-500
Wi-Fi credentials	WIFI string (40-80 chars)	1-50

Data Preparation

Prepare your batch data as a structured format:

id,data,label
001,https://example.com/product/001,Widget-A
002,https://example.com/product/002,Widget-B
003,https://example.com/product/003,Widget-C

Consistent Code Settings

When generating a batch, maintain consistent settings across all codes:

• Same error correction level — All codes in a batch should use the same EC level for visual consistency
• Same module size — Fixed pixel-per-module ratio ensures uniform physical size
• Same quiet zone — Consistent border width
• Same color scheme — Brand-consistent foreground and background colors

File Naming Conventions

Use a systematic naming scheme:

qr_product_001.svg
qr_product_002.svg
qr_product_003.svg

Or include the data hash for uniqueness:

qr_a1b2c3d4.svg
qr_e5f6g7h8.svg

Output Formats

Choose the right format for your use case:

• SVG — Best for print. Infinitely scalable, small file size, editable.
• PNG — Good for web and digital displays. Set resolution to at least 300 DPI for print.
• PDF — Ideal for direct printing. Each page can contain one or more QR codes.

Validation Strategy

After batch generation, validate a sample:

1. Automated scanning — Use a QR scanning library to verify each generated code decodes correctly
2. Visual inspection — Check a random sample for rendering issues
3. Size verification — Ensure all codes meet minimum size requirements for the target medium
4. Quiet zone check — Verify the border is intact on all codes

Performance Considerations

For large batches (1,000+ codes):

• Generate codes in parallel using Web Workers or server-side processing
• Write output files asynchronously to avoid memory issues
• Consider generating in chunks of 100-500 codes
• Monitor memory usage for high-version (dense) QR codes

Print Layout

For label sheets or product tags, arrange QR codes in a grid with:

• Consistent spacing between codes
• Human-readable labels below each code
• Cut marks for physical cutting
• Sequential numbering for tracking