GS1 Assistant (UPC EAN GTIN)

Assign, manage GTIN/UPC/EAN barcodes from GS1 Company prefix

by Left Foot Software · Launched: May 2024 · Free plan available.

5.0 (9) on Shopify Built for Shopify

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Assign, manage GTIN/ UPC/ EAN directly in your store. Reduce manual work. Save time. Prevent errors.

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About GS1 Assistant (UPC EAN GTIN)

Does your GS1 workflow still rely on manual Excel spreadsheets? GS1 Assistant can reduce hours of admin work and save time. Seamlessly integrates with GS1 Company Prefix & simplifies barcode management for stores of any size. Assign GTINs from the number block you already own, without duplicates. It takes the stress out of synchronizing your Shopify products with GS1: where your GS1 has an API, your products are automatically synchronized. Your products appear in Verified by GS1 shortly after. Supports your GS1 organization's import format. Download a ready-to-upload file. Ensures barcodes are formatted and validated correctly, without duplicates. Upload products to Amazon, Google Shopping, eBay, Etsy, & more, with no issues. Easy to use, even if you're new to GS1. Fast, responsive support that listens to your feedback. Show more Show less

Last verified: July 16, 2026 · Fresh

App details

Developer: Left Foot Software
Category: Sales channels
Pricing: Free plan available
Launched: May 2024
Rating: 5.0 (9) on Shopify

Key features

GTIN Validation (Format & Check Digit)
GTIN Status Visibility (OK/Discontinued)
Duplicate GTIN Detection
Verified by GS1 Status & Details
Manage Your Company Prefixes

Integrations with:

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

3 plans · starts free · 7-day free trial

Free

Basic

$4.99/month

Pro

$11.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 12 Shopify App Store reviews

Use the arrows to read individual reviews

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

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— 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

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

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

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