How Our UPC Lookup Chrome Extension Works

Our UPC Lookup Chrome Extension is one of the most popular tools for Amazon sellers. Here's how it works under the hood and how you can get the most out of it.

What It Does

1. 1Detects the ASIN from the URL
2. 2Queries the EcomSource API
3. 3Displays the UPC, EAN, GTIN, and other identifiers in a clean overlay

No copy-pasting, no manual searches, no switching tabs.

How to Install

1. 1Visit the Chrome Web Store and search "UPC Lookup" or use our direct link
2. 2Click "Add to Chrome"
3. 3Navigate to any Amazon product page
4. 4The extension icon will show the product identifiers

Use Cases

Quick Verification Suppliers send you a list of ASINs. Before committing to a purchase order, quickly verify each product's UPC to ensure you're getting the right items.

Cross-Marketplace Research See a great deal on Amazon? The extension instantly gives you the UPC to search on Walmart, Target, or any other retailer.

Listing Creation Need to create a listing on another platform? The extension gives you all the identifiers you need without leaving Amazon.

Tips for Power Users

• Keyboard Shortcut: Press Ctrl+Shift+U to toggle the overlay
• Bulk Mode: Open multiple Amazon tabs and the extension works on each one independently
• Export: Click the export button to copy all identifiers to your clipboard in CSV format

Privacy & Security

The extension only activates on Amazon product pages. It doesn't track your browsing, store personal data, or access any information beyond the ASIN visible in the URL.

---

Queries already finding EcomSource on Google (Search Console)

These are real searches where ecomsource.ai already earns impressions — prioritize the same topics in your tooling and content:

• asin to upc api — 139 impressions
• b2b data api — 121 impressions
• ecomsource — 10 impressions, 2 clicks
• gtin vs upc — 43 impressions
• b2b api — 52 impressions
• upc vs ean vs gtin for selling products online differences how to choose — 11 impressions
• upc code — 36 impressions
• walmart upc lookup extension — 2 impressions
• how to choose between upc-a or ean-13 for a gtin? — 1 impressions
• asin to upc lookup — 12 impressions

Related searches: UPC, barcode & product identifier keywords

This section expands on How Our UPC Lookup Chrome Extension Works with search terms sellers and developers use — including queries from Google Search Console and our keyword research. Whether you need asin to upc api, product data api, gtin vs upc, b2b data api, or bulk barcode lookup, the workflows below connect to EcomSource tools.

Upc lookup

Upc lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc code lookup

Upc code lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc code lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc finder

Upc finder is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc finder to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc finder free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc code

Upc code is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc code to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Search for upc

Search for upc is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use search for upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run search for upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc code search

Upc code search is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc code search to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code search free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Go upc

Go upc is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use go upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run go upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc codes

Upc codes is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc codes to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc codes free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc number lookup

Upc number lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc number lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc number lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Find upc

Find upc is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use find upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run find upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc barcode lookup

Upc barcode lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc barcode lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc barcode lookup free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Upc code scanner

Upc code scanner is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use upc code scanner to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc code scanner free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products.

Terminology & search intent reference

Understanding *why* a query matters helps you pick the right tool. High-volume navigational searches like upc lookup (22K+), upc code lookup (15K+), and barcode lookup (12K+) expect an instant free tool. Commercial queries such as barcode lookup api, upc api, and bulk barcode lookup expect documentation, pricing, and batch endpoints — all available on EcomSource.

Additional long-tail searches in this topic cluster

• barcode scanner identifier
• nike barcode scanner
• scan barcode to find item

Free lookup tools on EcomSource.ai

• [UPC lookup tools](/upc-lookup)
• [SCANNER lookup tools](/barcode-lookup)

• [All guides & blog posts](/blogs)
• [API documentation](/docs)
• [Pricing for high-volume barcode lookup](/pricing)

Frequently asked questions

Upc vs ean vs gtin for selling products online differences how to choose?

Searchers looking for upc vs ean vs gtin for selling products online differences how to choose usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Walmart upc lookup extension?

Searchers looking for walmart upc lookup extension usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

How to choose between upc-a or ean-13 for a gtin?

Searchers looking for how to choose between upc-a or ean-13 for a gtin? usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Asin to upc lookup?

Searchers looking for asin to upc lookup usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Upc vs ean vs gtin differences for selling products online 2025 or 2026?

Searchers looking for upc vs ean vs gtin differences for selling products online 2025 or 2026 usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Product data api?

Product data api is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use product data api to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run product data api free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Matching product on different marketplaces?

Matching product on different marketplaces is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use matching product on different marketplaces to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run matching product on different marketplaces free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Asin to upc converter?

Asin to upc converter is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use asin to upc converter to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run asin to upc converter free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Is gtin same as upc?

Is gtin same as upc is one of the highest-intent searches in product data — and it is exactly what this guide on *How Our UPC Lookup Chrome Extension Works* helps you solve. Sellers and developers use is gtin same as upc to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run is gtin same as upc free on the web, via [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb)Chrome Extensionhttps://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb, or through our barcode lookup API/upc-lookup across 1.6B+ indexed products. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

How upc codes work?

Searchers looking for how upc codes work usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/upc-lookup with Amazon catalog mapping, variation trees, and bulk batch endpoints. Use the free search on [ecomsource.ai](https://www.ecomsource.ai)ecomsource.aihttps://www.ecomsource.ai or read the related sections above for step-by-step workflows tied to Product.

Step-by-step: run your first lookup after reading this guide

1. 1Copy a UPC, EAN, GTIN, ISBN, or ASIN from packaging or your supplier sheet.
2. 2Open [ecomsource.ai](/) or a dedicated tool page ([UPC lookup](/upc-lookup), [barcode lookup](/barcode-lookup), [GTIN](/gtin-lookup), [ISBN](/isbn-lookup)).
3. 3Paste the code and search — results include brand, title, images, and Amazon identifiers.
4. 4For lists of 20+ codes, use [bulk barcode lookup](/bulk-barcode-lookup) via the API ([docs](/docs)).
5. 5Pin the [Chrome Extension](https://chromewebstore.google.com/detail/upc-lookup/pglhhlcbcbmfebnagjgmbchpmgokbmpb) for on-page Amazon/Walmart lookups.

Why EcomSource for barcode & UPC data

Competitors excel at single-purpose pages; EcomSource combines free online lookup, Amazon-native ASIN mapping, variation intelligence, and real-time bulk barcode lookup in one platform. If you are outgrowing BarcodeLookup pricing, Go-UPC email bulk turnaround, or EAN-Search rate limits, start with a free account/signup and run your first asin to upc api in seconds.

Try free UPC & barcode lookup →/

Get API keys for bulk search →/signup