A developer has launched Knockoff, a free browser extension that hides questionable brands and sponsored listings on Amazon. The tool quickly gained attention for giving users more control over what they see while shopping.
For publishers, content creators, and anyone managing digital commerce, the flood of unfamiliar brands on Amazon can make product research and affiliate strategies more challenging. A new browser extension called Knockoff aims to address this by automatically filtering out questionable brands and sponsored listings from Amazon search results.
Knockoff, available for Chrome and Firefox, was developed by Josh Pigford. The extension can hide, gray out, or filter products from brands that appear suspicious, based on criteria such as brand name structure and user reports. Pigford said the idea came after he struggled to find recognizable brands while shopping for tools, noticing a surge of listings from names like “SUNHZMCKP,” “SACATR,” and “ROTTOGOON.”
The extension quickly attracted attention on social media, with Pigford noting that brands such as WNPETHOME, EHEYCIGA, YXYL, LU&MN, JOYIN, TOMY, GODONLIF, YOOJEE, LINGTENG, LANEIGE, VISCOO, BIODANCE, COOFANDY, BALENNZ, TOSY, and LUENX are among those filtered. Users can customize which brands to allow or block, and can report both suspicious and mistakenly flagged brands. Knockoff also blocks all sponsored product listings if desired.
Unlike some previous tools, Knockoff runs locally, requires no account, and does not send data to any server. It is free to use and relies on community input to refine its filtering. Pigford emphasized that he created the extension as a personal project, not for direct economic benefit.
For those who avoid Amazon due to concerns about labor practices or platform quality, Knockoff highlights the scale of the issue. The extension’s popularity reflects ongoing frustration with Amazon’s search experience, where pay-to-play ads and algorithm-driven listings often crowd out established brands. In some cases, users reported that nearly all visible products on a search page were grayed out by the extension, underscoring the prevalence of lesser-known brands.
Pigford said the goal is to give users more control over their shopping experience and push back against algorithmic clutter. The extension builds on earlier efforts like AmazonBrandFilter and The Markup’s Amazon Brand Detector, but adds real-time community reporting and customization.
This focus on user control and transparency echoes broader moves in digital commerce, such as Walmart's recent investment in streaming ad platforms to shape shopping experiences.
