Question 1

Which barcode type should I use?

Accepted Answer

Code128 for general alphanumeric data. EAN-13/UPC-A for retail products. Code39 for industrial use. ITF-14 for shipping containers.

Question 2

What's the difference between 1D and 2D barcodes?

Accepted Answer

1D barcodes (like Code128) use lines and encode data horizontally. 2D barcodes (like QR codes) use patterns and encode more data in both directions.

Question 3

What content can be encoded?

Accepted Answer

Depends on the type. Code128 supports full ASCII. UPC/EAN are numbers only. Some types have specific length requirements.

Question 4

What size should my barcode be?

Accepted Answer

Ensure minimum bar width of 1-2 pixels for screen display, larger for print. Height should allow easy scanning (typically 1-2 cm minimum).

Question 5

Can I customize barcode colors?

Accepted Answer

Yes, but maintain high contrast. Dark bars on light background work best. Avoid red bars as some scanners use red lasers.

Barcode Generator

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