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Knockoff

Browser extension that filters Amazon pseudo-brands

Last verified July 2026 3 min read

What is Knockoff?

Knockoff product thumbnail

Knockoff is a free browser extension for Amazon shoppers who are tired of search results filled with trademark-squat pseudo-brands. It checks each brand on a results page against a daily refreshed register of 5,500+ established brands, scores unknown names, then hides, dims, or labels the listings you do not want to see. It works on Chrome, Firefox, and Safari, needs no account, and runs across all 23 Amazon marketplaces.

Why Knockoff works

Amazon search turns comparison shopping into brand archaeology when half the page is all-caps trademarks with no reputation behind them. Knockoff moves that decision upstream by appraising each brand as results render and letting personal trust and block lists override the shared heuristics, so a shopper starts from recognizable brands instead of opening one disposable listing after another.

Knockoff features

  • In-page brand appraisal. Each Amazon page is checked as results load, with known brands passing through and unknown names scored in the browser.
  • Hide, dim, or label. Flagged listings can disappear with a one-click reveal, fade until hovered, or stay visible with a warning chip.
  • Daily brand register. A curated register of 5,500+ established brands refreshes daily, and accepted community fixes reach installs within a day.
  • Personal trust and block lists. Shoppers can mark any brand as trusted or blocked from the results page, and those choices override every other signal.
  • Sponsored listing toggle. A separate setting hides Amazon Sponsored placements from search results, off by default.
  • All Amazon marketplaces. It runs on all 23 Amazon marketplaces, including amazon.com, amazon.co.uk, amazon.de, and amazon.co.jp.

Who Knockoff is for

  • Amazon shoppers who keep seeing random all-caps brands in basic searches and want suspicious names removed before they click.
  • Pet, home, and everyday category shoppers who want familiar brands to survive the first results page.
  • Deal hunters who want the separate Sponsored toggle so paid listings do not take over search results.
  • Privacy-sensitive extension users who want filtering to happen locally without creating an account.

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Frequently asked

Knockoff FAQ

What does Knockoff filter?
It filters trademark-squat pseudo-brands out of Amazon search results using known-brand lists, name scoring, and community corrections.
Is Knockoff free?
Yes. It is free with no accounts, premium tier, or trial clock.
Which browsers does it support?
Chrome, Firefox desktop and Android, and Safari on Mac, iPhone, and iPad are supported. Safari needs macOS 11 or iOS 15 and later.
Does it work outside amazon.com?
Yes. It runs on 23 Amazon marketplaces, including amazon.co.uk, amazon.de, amazon.co.jp, and amazon.com.au.
Does it detect fake reviews or counterfeit goods?
No. It does not read reviews or authenticate counterfeits. It filters pseudo-brands in results before you open a product page.
What data leaves the browser?
Filtering runs locally. Misclassification reports are sent only when clicked. Seller country and Help pick US alternatives send seller or product facts and can be switched off.