Capital One Shopping is a

browser plugin A browser extension is a software module for customizing a web browser. Browsers typically allow users to install a variety of extensions, including user interface modifications, cookie management, ad blocking, and the custom scripting and styl ...

, website and

mobile app A mobile application or app is a computer program or software application designed to run on a mobile device such as a smartphone, phone, tablet computer, tablet, or smartwatch, watch. Mobile applications often stand in contrast to desktop appli ...

that offers

e-commerce E-commerce (electronic commerce) refers to commercial activities including the electronic buying or selling products and services which are conducted on online platforms or over the Internet. E-commerce draws on technologies such as mobile co ...

comparison shopping Comparison or comparing is the act of evaluating two or more things by determining the relevant, comparable characteristics of each thing, and then determining which characteristics of each are similar to the other, which are different, and t ...

and cash back at online retailers (more than 30,000) that participate in its programs, but has been accused of being a malicious cookie stuffing

Trojan horse In Greek mythology, the Trojan Horse () was a wooden horse said to have been used by the Greeks during the Trojan War to enter the city of Troy and win the war. The Trojan Horse is not mentioned in Homer, Homer's ''Iliad'', with the poem ending ...

. It is operated by Wikibuy, LLC of

Plano, Texas Plano ( ; Spanish language, Spanish for "flat surface" /'plano/) is a city in the U.S. state of Texas, where it is the largest city in Collin County, Texas, Collin County. A small portion of Plano is located in Denton County, Texas, Denton Count ...

, and is primarily aimed at consumers in the United States.

Services

Services include product search, automated coupon codes, shopping credits, and watchlist. Capital One Shopping searches the internet for products and automated coupon codes for relevant products. It also compares prices among various merchants. When shoppers purchase from participating retailers using the Capital One Shopping browser extension or app, they earn rewards in the form of shopping credits, which can then be used to buy gift cards. The watchlist function lets users know when prices drop on products that they have viewed and/or purchased.

Technical specifications

Capital One Shopping's browser extension is compatible with Google Chrome, Mozilla Firefox, Microsoft Edge and Safari. The mobile version is available for both iOS and Android devices and is designed primarily for use within the U.S.

Reception

Consumer financial site

NerdWallet NerdWallet is an American personal finance company, founded in 2009 by Tim Chen and Jacob Gibson. It has a website and app that earns money by promoting financial products to its users. History NerdWallet was founded in August 2009 by Tim Chen ...

recommends Capital Online Shopping, among several other competitors, but warns that such sites collect basic information about users such as name, mailing address, and email address, which are often used for marketing purposes. CNET rated the service "Best for Gift Cards".

Lawsuit

In 2025, a class action lawsuit was filed by multiple attorneys that allege that the Capital One Shopping plugins and apps are

Trojan horses In Greek mythology, the Trojan Horse () was a wooden horse said to have been used by the Greeks during the Trojan War to enter the city of Troy and win the war. The Trojan Horse is not mentioned in Homer's ''Iliad'', with the poem ending befor ...

that steal affiliate commissions from content creators by substituting Capital One Shopping's affiliate code for the actual content creators' affiliate codes, causing the merchant to send the commission to Capital One Shopping instead of the actual content creators which helped initiate the sales. This is a type of cookie stuffing.

References

{{Customer loyalty programs Reward, cashback and comparison-shopping digital platforms Android (operating system) malware

Shopping Shopping is an activity in which a customer browses the available goods or services presented by one or more retailers with the potential intent to purchase a suitable selection of them. A Retail#Shopper profiles, typology of shopper types ha ...

Client-side web security exploits iOS malware Social engineering (security) Trojan horses