Trusted by sellers & developers — free to start
EcomSource Chrome Extension: UPC Lookup for Amazon & Walmart Sellers
Product identifiers, right on the page
See UPC, EAN, ASIN, and variation data while you browse. Free daily lookups. Install in about 60 seconds.
| ASIN | UPC | Type |
|---|---|---|
| B0113UZJE2 | 679113377950 | CHILD |
| B097141VBH | 810043374828 | CHILD |
| B0BB6MBR9C | 810043377768 | CHILD |
| B07JB2XRNT | 817915024751 | CHILD |
| B0FMTCKQ89 | 817915023891 | PARENT |
Chrome Extension Toolkit · Fast identifier overlays on product pages
Built for sellers who live on product pages
Stop breaking your research flow. EcomSource puts UPC, EAN, ASIN, and variation data on the listing itself — so wholesale, OA, and retail arbitrage checks happen in place.
Without EcomSource
- Copy-pasting ASINs into separate lookup tools
- Guessing which UPC maps to which variation
- Opening multiple tabs to verify barcodes
- Missing parent/child relationships while sourcing
- Juggling spreadsheet exports for every product check
With EcomSource
- UPC, EAN, and ASIN visible on the product page
- Variation type and sibling identifiers at a glance
- Works on Amazon and Walmart while you browse
- 50 free daily lookups — upgrade only if you need more
- Same catalog powering web search and the REST API
Your extension toolkit
Each capability does one thing well. Together they cover on-page product research for Amazon and Walmart sellers.
UPC / EAN Lookup
See barcodes on Amazon & Walmart product pages instantly — no copy-paste, no tab switching.
Free: 50 lookups/day
ASIN Overlay
Confirm ASIN, parent/child type, and identifier mappings while you browse listings.
Free: Included free
Variation Matrix
View sibling ASINs, UPCs, and variation types for the full product family at a glance.
Free: Included free
Amazon Page Tools
Native overlay on Amazon product pages for sellers researching FBA and wholesale deals.
Free: All users
Walmart Page Tools
Same identifier intelligence on Walmart listings for cross-marketplace sourcing.
Free: All users
API-Powered Data
Every overlay is powered by the EcomSource product database — same data as the API.
Free: Shared catalog
What makes EcomSource different
Most extensions show price widgets. We focus on identifier intelligence tied to a real product catalog.
Free to Start
50 daily lookups with no credit card. Upgrade only when your volume grows.
Identifier-First Design
Built for UPC ↔ ASIN workflows — not a generic product scraper.
Amazon + Walmart
One extension for both marketplaces, powered by the same 1.6B+ catalog.
Variation Intelligence
Parent/child trees and sibling UPCs so you source the full family, not one SKU.
Fast & Lightweight
Runs in your browser with a clean overlay — no heavy dashboard required to look up a code.
Connected to Your Account
Sign in once and your lookup quota syncs across web, extension, and API.
Get started in 60 seconds
Install from Chrome Web Store
Search for EcomSource UPC Lookup or click Install Extension.
Pin the extension
Chrome asks for permissions — confirm, then pin it for one-click access.
Optional: create a free account
Sign up to sync your daily quota across web tools and the API.
Open Amazon or Walmart
Visit any product page — UPC, EAN, ASIN, and variations appear in the overlay.
Common questions
Still have questions? Email team@ecomsource.ai
Ready to look up UPCs on-page?
Join sellers and developers using EcomSource for Amazon & Walmart identifier intelligence. Free daily lookups. No payment required to start.