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GS1 Assistant (UPC EAN GTIN)

GTIN, UPC codes, EAN barcodes from your GS1 company prefix

by Left Foot Software · Launched: May 2024

4.2 (13) on Shopify Built for Shopify
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UPC codes and EAN barcodes from your own GS1 company prefix. Assign GTINs in bulk, find missing and duplicate codes, download GS1 import files.

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About GS1 Assistant (UPC EAN GTIN)

For brands that make their own products and license barcodes from GS1. GS1 Assistant assigns GTINs (UPC barcodes and EAN codes) from your GS1 company prefix to your variants, one at a time or in bulk, and writes each to the barcode field. It shows which products have missing, invalid or duplicate GTINs. Where your GS1 organization has an API, Auto Sync sends your products to GS1. US brands can license a GS1 prefix in the app. Every plan includes email & online setup help.

Last verified: November 7, 2026 · Fresh

App details

Developer
Left Foot Software
Category
Sales channels
Pricing
Paid
Launched
May 2024
Rating
4.2 (13) on Shopify

Key features

  • Supports prefixes up to 100 GTINs
  • Assign GTIN/ UPC/ EAN to your products
  • Identify missing and invalid GTINs
  • Import files for 10 GS1 organizations
  • Email + Zoom setup & onboarding support
Integrations with:

GS1 Brazil GS1 Germany GS1 Netherlands GS1 Sweden GS1 US Channel Partner Shopify Admin Shopify Flow Verified by GS1

3 plans · 7-day free trial

Essential
Growth
Automation

$29.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 17 Shopify App Store reviews

Use the arrows to read individual reviews

thanks for the call it was very helpful
— Denner Cashmere
What a useful app. I'm a multi-brand retailer and this takes a lot of the work out of uploading and managing barcodes.
— Hiking Food Australia
Had issues with the connection with GS1 Uk and the app in shopify, but the support was excellent and exceeded my expectations. Yes, their is integration between GS1 and shopify. Just need to have the connection settings easier to use. I do recommend this app, as it does exactly what it says! Any issues with the app, contact their support!
— The Tshirt Emporium
Excellent app and outstanding support. We run a Shopify store with more than 20,000 SKUs and manage our own GS1 Norway company prefix. Before finding GS1 Assistant, our workflow relied heavily on manual Excel spreadsheets, GS1 imports, and countless hours of administrative work. From the very first email, Brian was incredibly responsive and helpful. He took the time to understand our unique busi...
— Retrospillkongen
First class app with first class support. If you need barcodes then this is the only app you need. It can connect to your GS1 account is needed. We have been using this app for 2+ years and in that time have been able to use the barcodes ( Ean and UPC ) to upload products to Amazon , eBay and Etsy ). We also use the barcodes internally for stock verification when picking and packing. This app is i...
— TESLARY
empty
— ocean+main
An Incredibly Helpful and Time-Saving Tool! The GS1 Assistant made working with GTINs and UPCs so much smoother and more intuitive. It takes the guesswork out of product identification and helps ensure everything is formatted and validated correctly. I was impressed by how quickly it provided accurate guidance, especially when managing large datasets. The interface is clean and user-friendly, and...
— Grunt Style, LLC
We have been using the app for a few months now and must say it is the best thing that is available for GS1 code management. We have no prior knowledge and the app makes its extremely easy to navigate the complex world of EANS, GTINS etc. Support is also 5 star. Special thank you to Brain, who is extremely is responsive and kind enough to arrange a call to help get through any difficulty. The ap...
— ÚCHÈ Fashion Brand
GS1 Assistant is a must-have tool for any Shopify store managing UPC, EAN, or GTIN barcodes. It seamlessly integrates with your GS1 Company Prefix, ensuring accurate barcode assignments without duplicates. The app makes syncing with GS1 effortless, preventing errors and streamlining product management. The support team is amazing, quick to reply and detailed. Highly recommend this app!
— Uniqfind
I needed urgently to create GTIN code to our older stock (600 SKU), which would else be a nightmare, since GS1 has changed its layout of the bulk upload files. This App saved me 2 days of work! So I do recommend it
— Infantium Victoria
GS1 Assistant hat die Verwaltung von GTINs in unserem Shopify-Shop unglaublich einfach gemacht. Das Zuweisen von UPC/EAN-Codes ist unkompliziert, und die direkte Integration mit GS1 Germany spart enorm viel Zeit. Sobald ich EAN-Codes zuweise, werden unsere Produkte automatisch mit GS1 synchronisiert – einfacher geht es nicht ! Was diese App besonders auszeichnet, ist der hervorragende Support. Br...
— VAAM SPORT
There is no active help center. Also, if you have 500 products, there’s no way to upload them all to the GS1 database in a single file. Furthermore, there is no integration between GS and Shopify.
— Saintby
Great, they appeared to have been assigned to the products. But according to the GS1 dashboard, they ALL state unassigned, no information and the numbers are available.
— The Tshirt Emporium
I'm being investigated; I uninstalled the app months ago, and they're still charging me for not installing it.
— Jadoreh
Funktioniert in der Schweiz nicht. Habe die App installiert und am gleichen Tag wieder gelöscht, trotzdem wurde mir der Jahresbetrag berechnet. Shopify übernimmt das nicht: https://help.shopify.com/en/manual/your-account/manage-billing/refund-policy-subscriptions
— Tamvath
Absolut keine Empfehlung. Bei größeren Artikellisten ab ca. 18.000 Artikel bzw. Varianten wird alles extrem langsam. Ab ca. 20.000 vergebenen GTINs gibt das System seinen Geist auf und funktioniert gar nicht mehr. Nach anfänglicher Begeisterung bin ich absolut enttäuscht.
— Leynwendt
GS1 Assistant has made managing UPC codes effortless for our Shopify store. Assigning GTINs to products is simple, and the products appear in Verified by GS1 shortly after uploading to GS1. This means we don’t have to worry about issues with Amazon or Google Shopping—they work. The app is straightforward, reliable, and takes the stress out of synchronizing our Shopify products with GS1. The suppo...
— JESSICA RICH

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