GlossaryBarcode
Barcode
also: GTIN, UPC, EAN
The number printed under the stripes on a box. Most things sold online don't have one. Comparison sites usually match products by barcode. Unbranded goods sold by many resellers rarely carry one, and those are exactly the products where prices differ most. As of October 23, 2026, Vessim has matched 387 listings into 376 products without reading a single barcode.
One photo, 2 titles
Mountaineering Leisure And Tactical High-Capacity Backpack For Men And Women
Large-capacity Commuter Outdoor Travel Backpack
2 of 11 words in common. The photo is the same, so it is one product.
Why it matters here
At Vessim.
That is why Vessim matches the photo instead.
How it worksThe whole method, from a photo to every price.Put it to work
Now say it your own way.
You don't need any of these words to search. Describe what you want, and we'll find the cheapest one that fits.