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.