Overview
- Developer Josh Pigford released Knockoff as a free, open-source browser extension that users can install to mark, dim, or hide low-quality pseudo-brands and sponsored product listings on Amazon.
- The extension classifies listings using linguistic name heuristics together with a community-maintained brand list and performs all processing locally on the user’s device to avoid sending data to external servers.
- Knockoff lets users allow or block specific brands, report misflags, and choose whether flagged results are dimmed or fully hidden, and it includes an option to hide sponsored product placements.
- The tool spread rapidly after its release and early users reported clearer search results and fewer low-quality purchase choices, though its heuristics can misidentify legitimate brands and reports conflict about exact browser availability.
- Knockoff builds on earlier projects that flagged sketchy Amazon brands and highlights the platform problems the U.S. FTC has cited about pay-to-play ads and algorithm-driven low-quality listings, a dynamic that could drive more user-led filtering or regulatory attention.