vessim.com
Glossary

Extension
also: browser extension

A small add-on for your browser that checks the product page you are on. It finds the main product photo on a shop's page, turns it into a fingerprint, and asks Vessim who else sells the same photo. As of October 23, 2026, the fingerprint it sends is checked against 376 products in the Vessim index.

Updated October 26, 2026In the full glossary →

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The 64 bits of a real listing’s photo, “12.5 M Durable Flagpole Halyard Rope Flags Pole Rope Nylon Braided Cord White”. This, and only this, is what a fingerprint check sends.
Why it matters here

At Vessim.

Only those 64 bits leave your browser. It brings the comparison to the shop you are already on.

The extensionWhere extension shows up on the site.
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.

Open the app Get PlusThe glossary