Difference between revisions of "Barcodes"

From Open Food Facts wiki
Jump to navigation Jump to search
(+ Barcodes data quality)
 
Line 23: Line 23:
 
== Testing barcodes with our apps ==
 
== Testing barcodes with our apps ==
 
It's interesting to control that our apps are playing well with different barcodes' size. We build a [https://docs.google.com/document/d/12VtFOsnHfK4PVwBJy_aHwSogX_yKRNfzoiHCPD1sxN0/edit# test document] that you can print and use with the app.
 
It's interesting to control that our apps are playing well with different barcodes' size. We build a [https://docs.google.com/document/d/12VtFOsnHfK4PVwBJy_aHwSogX_yKRNfzoiHCPD1sxN0/edit# test document] that you can print and use with the app.
 +
 +
== Barcodes data quality ==
 +
Sometimes we're not sure a barcode exists or not. Barcodes scanners are sometimes making mistakes.
 +
 +
The following site allows you to verify if a barcode exists or not: https://www.gs1.org/services/verified-by-gs1
  
 
== All things barcode ==
 
== All things barcode ==

Latest revision as of 16:17, 5 September 2024

Other languages:
/ français /

Barcode length

The majority of product codes are following EAN-13 standard, and, as such, are 13 chars length.

As of 2022-04-06, Open Food Facts contains more than 12,000 products (~0.5%) with a barcode longer than 13 chars.

Open Food Facts website can't display a product with a barcode longer than 24 chars (a bug is open).

Barcode weight

For EAN-13 barcodes, GS1 recommend barcodes' weight to be ~32mm. In general, producers tend to use barcodes between 24 and 35 mm. Values below 24mm and above 35 are rare.

Testing barcodes with our apps

It's interesting to control that our apps are playing well with different barcodes' size. We build a test document that you can print and use with the app.

Barcodes data quality

Sometimes we're not sure a barcode exists or not. Barcodes scanners are sometimes making mistakes.

The following site allows you to verify if a barcode exists or not: https://www.gs1.org/services/verified-by-gs1

All things barcode

Barcode related pages on Open Food Facts

News

  • Wikidata is adding support for GS1 country prefixes

Roadmap

  • Features and bugs to work on
  • Adding APIs for mobile scanning apps
    • Get country suggestions
    • Get Manufacturer Code suggestions
    • Get Product Code suggestions
    • Get barcode API
    • Generate barcode SVG

See also