What a barcode can tell you
A barcode can point to a database record. That record may be missing, outdated, regional, or connected to a different formulation.
Barcode or ingredient label?
For allergy checks, the ingredient list matters more than the barcode
A barcode identifies a product, but it does not display the current ingredients on the package. Food Checker works from a label photo, food photo, or product name.
What to know
A clearer way to use this check
Use the method that fits the information available, then verify the exact food before making a decision.
What the label shows
The package in your hand contains the manufacturer’s current ingredient list and allergen declaration for that item.
The Food Checker approach
Capture the complete ingredient panel whenever possible. Use a food photo or name only when printed ingredients are unavailable, and always verify before eating.
Choose the best input
Label, photo, or name?
Use a complete ingredient label whenever it is available. Photos and product-name checks are helpful starting points when packaging is missing.
Continue your check
Compare the three methods and learn what each one can - and cannot - show.
Explore FeaturesLearn before your next check
Guides for this check
Practical label-reading guides that pair well with this check.
Food labels
How to Read Food Labels for Allergens
Learn how to read U.S. food labels for allergens, including ingredient lists, Contains statements, and voluntary may contain wording.
Read guide →
Gluten labels
Gluten-Free Label Claims Explained
Understand FDA gluten-free label claims, the 20 ppm limit, wheat-free wording, Contains statements, and certification marks.
Read guide →
Everyday routine
Grocery Shopping with Food Allergies
Build a practical grocery shopping routine for food allergies, from planning a list to checking labels, bulk bins, and online orders.
Read guide →
Scan an Ingredient Label
Get Food Checker for iPhone and keep a quick ingredient check within reach.