Do barcode symbols need to be a particular size?
Yes - there are global guidelines on the ideal size for each type of barcode symbol.
Technical specifications for barcode symbols
For further details on barcode symbol specifications including X-dimensions and quiet zones please see the following pages:
EAN 13 specifications
ITF 14 specifications
Useful Guide to Creating a Barcode:
For answers to all the common questions about barcodes - how they are composed, what size and colour they should be and where they should be placed on a product, download a copy of the GS1 Ireland Express Guide to Retail Barcodes - an introductory guide to GS1-standard barcodes for products and outer cases.