How to Scan a Barcode and Find Product Information Online

Scanning a barcode to find product information is one of the most useful things your smartphone can do. Whether you're comparing prices in a store, checking if a product is authentic, or looking up nutritional information, barcode scanning gives you instant access to product data.

How Barcode Scanning Works

Every barcode encodes a numeric identifier — typically a UPC (12 digits) or EAN (13 digits). When you scan a barcode, your device reads this number and then queries a product database to retrieve the associated product information.

The process is:

1. 1Scan — Camera reads the barcode pattern and decodes the number
2. 2Lookup — The number is sent to a product database API
3. 3Display — Product details are shown on your screen

Best Ways to Scan Barcodes in 2026

1. Smartphone Camera (Built-in)

Both iPhone and Android now have barcode scanning built into their camera apps. Just point your camera at a barcode and tap the notification that appears.

Pros: No app installation needed Cons: Limited product data, usually just a Google search

2. Dedicated Barcode Scanner Apps

Apps like EcomSource, ShopSavvy, and Barcode Scanner+ are purpose-built for product lookups.

Best free options:

• EcomSource Chrome Extension — Best for Amazon product data and UPC/EAN cross-referencing
• Google Lens — Good for visual search and basic barcode scanning
• ShopSavvy — Good for price comparisons at retail stores

3. Browser-Based Barcode Lookup

Don't want to install anything? Go to EcomSource.ai and type the barcode number directly into the search bar. You'll get:

• Full product name and brand
• All associated identifiers (UPC, EAN, ASIN, GTIN)
• Product images
• Weight and dimensions
• Category information

4. API-Based Scanning (For Developers)

Building your own barcode scanning feature? Use EcomSource's API:

// After scanning barcode with camera library
const barcode = "012345678901";
const response = await fetch("https://api.ecomsource.ai/api/v1/search/product", {
  method: "POST",
  headers: {
    "X-Access-Key": "your_access_key",
    "X-Secret-Key": "your_secret_key",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ identifier: barcode, identifierType: "upc" }),
});
const product = await response.json();

What Information Can You Get from a Barcode?

A barcode lookup typically returns:

• Product name and description
• Brand and manufacturer
• Category and subcategory
• Images (multiple angles when available)
• Weight and dimensions
• Pricing (current and historical)
• Marketplace listings (Amazon, Walmart, etc.)
• Nutritional info (for food products)

Common Barcode Scanning Use Cases

Price Comparison Shopping

Scan items in-store to check if they're cheaper online. This alone can save hundreds of dollars per year.

Product Authenticity Verification

Worried about counterfeit products? Scan the barcode to verify it matches the legitimate manufacturer's product data.

Inventory Management

Small business owners can scan products to quickly add them to inventory systems without manual data entry.

Dietary Tracking

Scan food barcodes to instantly log nutritional information in your health tracking app.

Why EcomSource Is the Best Barcode Lookup Service

With 1.6 billion+ products in our database, EcomSource returns results for virtually any consumer product barcode. Our data includes:

• Complete Amazon product data
• Cross-referenced UPC, EAN, ASIN, and GTIN codes
• Product variations (size, color, style)
• Sub-200ms response times

Try Free Barcode Lookup →/signup

---

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
• b2b api — 52 impressions
• product data api — 36 impressions
• amazon api to get product details — 18 impressions
• gtin vs upc — 43 impressions
• b2b apis — 31 impressions
• amazon product advertising api official 2026 — 27 impressions
• amazon api product — 26 impressions
• matching product on different marketplaces — 35 impressions

Related searches: UPC, barcode & product identifier keywords

This section expands on How to Scan a Barcode and Find Product Information Online 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 code

Upc code is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* 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/barcode-lookup across 1.6B+ indexed products.

Barcode lookup

Barcode lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use barcode lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run 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/barcode-lookup across 1.6B+ indexed products.

Barcode finder

Barcode finder is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use barcode finder to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run barcode 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/barcode-lookup across 1.6B+ indexed products.

Barcode of a product

Barcode of a product is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use barcode of a product to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run barcode of a product 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/barcode-lookup across 1.6B+ indexed products.

Product barcode

Product barcode is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use product barcode to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run product barcode 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/barcode-lookup across 1.6B+ indexed products.

International product code

International product code is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use international product code to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run international product 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/barcode-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 to Scan a Barcode and Find Product Information Online* 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/barcode-lookup across 1.6B+ indexed products.

Upc product code

Upc product code is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use upc product code to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc product 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/barcode-lookup across 1.6B+ indexed products.

Find barcode

Find barcode is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use find barcode to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run find barcode 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/barcode-lookup across 1.6B+ indexed products.

Barcode number search online

Barcode number search online is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use barcode number search online to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run barcode number search online 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/barcode-lookup across 1.6B+ indexed products.

Upc product

Upc product is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use upc product to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run upc product 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/barcode-lookup across 1.6B+ indexed products.

Product code lookup

Product code lookup is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use product code lookup to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run product 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/barcode-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

• barcodelookup
• upc code scanner
• upc scanner for iphone
• scan upc
• barcode scanner identifier
• nike barcode scanner
• scan upc code
• scan barcode to find item
• universal product code lookup
• barcode lookup api
• api shoes
• barcode search api
• upcitemdb api barcode lookup
• gtin lookup api
• go upc api

Free lookup tools on EcomSource.ai

• [BARCODE lookup tools](/barcode-lookup)
• [SCANNER lookup tools](/barcode-lookup)
• [PRODUCT lookup tools](/barcode-lookup)
• [B2B lookup tools](/b2b-data-api)
• [API lookup tools](/product-data-api)

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

Frequently asked questions

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 to Scan a Barcode and Find Product Information Online* 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/barcode-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 How-To.

Amazon api to get product details?

Searchers looking for amazon api to get product details usually need fast, accurate product identification — not a generic description. EcomSource supports this query as part of unified UPC, EAN, GTIN, and ISBN lookup/barcode-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 How-To.

Amazon product advertising api official 2026?

Amazon product advertising api official 2026 is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use amazon product advertising api official 2026 to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run amazon product advertising api official 2026 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/barcode-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 How-To.

Amazon api product?

Amazon api product is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use amazon api product to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run amazon api product 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/barcode-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 How-To.

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 to Scan a Barcode and Find Product Information Online* 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/barcode-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 How-To.

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/barcode-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 How-To.

Amazon product advertising api current status 2026?

Amazon product advertising api current status 2026 is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use amazon product advertising api current status 2026 to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run amazon product advertising api current status 2026 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/barcode-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 How-To.

Amazon product data api?

Amazon product data api is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use amazon product data api to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run amazon 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/barcode-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 How-To.

Amazon product advertising api reviews 2026?

Searchers looking for amazon product advertising api reviews 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/barcode-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 How-To.

Amazon product advertising api 2026?

Amazon product advertising api 2026 is one of the highest-intent searches in product data — and it is exactly what this guide on *How to Scan a Barcode and Find Product Information Online* helps you solve. Sellers and developers use amazon product advertising api 2026 to identify products, validate supplier manifests, and connect barcodes to Amazon ASINs. With EcomSource.ai you can run amazon product advertising api 2026 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/barcode-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 How-To.

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