Producing a QR code that is 100% readable starts with the proper layout. Several components of the layout must be taken into consideration on the design side to meet the required delivery of  information.  These are the areas that are most important in the design process.


  • Cell size: how large (or small) is the QR code required to be. The type of printing process that is to be used, controls the ultimate size limits.


  • Content format: ALG uses a combination of numeric and alphanumeric characters. Content size is dependent on how many "characters" are taken up in the encoding of the required information.  Certain formatting also takes up additional characters.
  • Error correction: This allows correction capability to restore data if the code is dirty or damaged. There are four  correction levels (L,M,Q,H) available for encoding depending on the operating environment, with H being the highest. While raising the level improves the error correction ability, it also increases the amount of characters used.


    • As an example, a Level L code correction could be used in a clean environment where a large amount of data is needed, whereas, a Level Q or H might be selected for more of an industrial or factory setting where there is a concern with dirt or debris.


  • Other limitations: Base materials that are needed to perform in certain environments, such as reflective materials and lamination, can cause difficulty in reading any barcodes.  These issues have to be taken into consideration during design so that the encoded information is set larger to counter scanning issues.

ALG Labels and Graphics is a custom manufacturer of pressure sensitive labels and decals celebrating over 50 years in business.  Our focus is delivering value to our customers with responsive service, quality products and low cost production.  Our mission is to make it easy for you to do business with ALG.

3005 4th Avenue South,

Birmingham, Alabama 35233


(f) 205.328.0123

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