# meros.io

> AI-optimized mirror of meros.io containing 25 pages totalling 4,953 words of clean markdown content, structured data, and semantic HTML. Original source: https://meros.io/. Last updated: 2026-06-15T04:08:54.154Z.

Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG).

## Homepage

- [Free UPC Code Lookup](/content/site-root.html) (168 words)

## Articles & Blog Posts

- [How Barcodes Are Assigned](/content/info-how-barcodes-assigned/index.html) (361 words)
- [How to Look Up a Product by Barcode](/content/info-product-by-barcode/index.html) (367 words)
- [What Is a UPC Barcode and How Does It Work?](/content/info-what-is-upc/index.html) (368 words)
- [The History of the Barcode](/content/info-history-of-barcodes/index.html) (424 words)
- [Why a Barcode Lookup Sometimes Returns No Results](/content/info-why-no-results/index.html) (340 words)
- [The Difference Between UPC, EAN, QR Codes, and Data Matrix](/content/info-upc-vs-ean/index.html) (415 words)
- [Why the Same Product May Have Different Barcodes in Different Countries](/content/info-different-countries/index.html) (351 words)
- [What to Do When a Barcode Scan Brings Up the Wrong Product](/content/info-scan-wrong-product/index.html) (397 words)
- [Can Two Different Products Ever Share the Same Barcode?](/content/info-two-products/index.html) (376 words)
- [Free UPC Code Lookup](/content/listings-6/index.html) (25 words)
- [Why Some Products Have Multiple Barcodes](/content/info-why-multiple-barcodes/index.html) (372 words)
- [Free UPC Code Lookup](/content/listings-11/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-9/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-7/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-5/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-10/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-8/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-4/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-3/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-1/index.html) (25 words)
- [Free UPC Code Lookup](/content/listings-2/index.html) (25 words)
- [What the Numbers in a Barcode Actually Mean](/content/info-barcode-number-meaning/index.html) (352 words)
- [How to Tell if a Barcode Matches the Exact Product You Have](/content/info-match-exact-product/index.html) (362 words)
- [Free UPC Code Lookup](/content/listings-12/index.html) (25 words)

## Resources

- [Full Page Index](/index.html): Browse all cached pages with rich metadata
- [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines
- [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery
- [Robots.txt](/robots.txt): Crawler directives