Boycat: Ethical Shopping & Ad Blocker by Boycat
Instantly checks websites and Amazon products against ethical campaigns, finds better brand alternatives, and blocks ads. Shop with your values. BuycatVPN coming soon.
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About this extension
Shop with your values. Boycat checks websites and Amazon products against live ethical campaign databases, finds you better brands to buy from, and blocks ads. It runs in the background and only speaks up when it finds something worth knowing.
No spreadsheets. No manual research. Just browse.
ETHICAL SHOPPING SCANNER
Every website and Amazon product you visit gets checked against the ethical campaigns you follow. The result shows up instantly in your toolbar icon.
What the icon tells you:
Checks are split between the website (the company behind the domain) and the product (the brand you're buying). On Amazon you can see both at once.
FOLLOW THE CAMPAIGNS YOU CARE ABOUT
Boycat lets you choose which ethical campaigns to follow and only flags brands that violate the ones you've selected.
Campaigns are maintained by the Boycat team and updated as things change. Follow as many as you want. If a brand violates any one of them, Boycat flags it and tells you exactly which campaign caught it. Switch campaigns from inside the popup and the current page rescans immediately.
Ethical shopping means different things to different people. Some care about labour rights, others about environmental harm, animal welfare, or political spending. Boycat lets you set your own boundaries.
AMAZON PRODUCT SCREENING
Browse Amazon normally. Boycat checks every product page against your active campaigns in the background.
If the brand is flagged, you'll see which campaign it violates, why it was flagged, and alternative products from brands that pass your standards. Click through to any alternative without leaving the page.
Boycat does not change any Amazon prices, listings, or page content.
BETTER BRAND ALTERNATIVES
When something is flagged, Boycat finds alternatives from brands that meet your ethical standards so you can still buy what you need. Alternatives load automatically and appear in the extension popup. One click opens the product on Amazon.
BUILT-IN AD BLOCKER
An ad blocker you can turn on or off from the Protection tab. When enabled it filters ads, banners, and tracking scripts across every site you visit. Pages load faster with fewer distractions. A live count shows how many ads have been blocked this session.
Off by default. One tap to enable.
BUYCATVPN — COMING SOON
BuycatVPN is in active development and will be available for Firefox in an upcoming release. When it launches, it will route your browser traffic through an encrypted tunnel, keeping your browsing private from your ISP and anyone on the same network. Follow Boycat on addons.mozilla.org to be notified when it arrives.
REPORT AN ERROR
If you find a brand that's been incorrectly flagged or a listing that's out of date, you can report it directly from the popup. Reports go to the Boycat team for review.
PRIVACY
Compliance checks send an anonymous request containing only the domain name or brand identifier. Nothing is tied to your account. Boycat does not log which pages you visit, how long you spend on them, or what you purchase.
Optional usage analytics (feature-level only, no browsing data) are off by default and can be changed at any time from the consent screen.
Boycat does not sell user data to anyone. Full privacy policy.
GETTING STARTED
FREQUENTLY ASKED QUESTIONS
Does Boycat slow down my browser?
No. Scans run asynchronously and do not block page loading. Most complete in under a second.
Does it work on every website?
It runs on every website. Whether a result comes back depends on whether the brand or domain is in the Boycat database. For unknown sites it shows a neutral result and stays quiet.
Does it work on Amazon?
Yes. Boycat is built specifically for Amazon product pages. It reads the brand from the listing and checks it against your active campaigns.
Is the ad blocker like uBlock Origin?
Boycat's ad blocker uses the browser's built-in filtering system and is designed to be lightweight and always-on. It covers the most common ad and tracker networks.
Is Boycat free?
The compliance scanner, brand alternatives, and ad blocker are free. BuycatVPN will require a Boycat Plus or Pro subscription when it launches.
Website | Support | Privacy policy
No spreadsheets. No manual research. Just browse.
ETHICAL SHOPPING SCANNER
Every website and Amazon product you visit gets checked against the ethical campaigns you follow. The result shows up instantly in your toolbar icon.
What the icon tells you:
- Green: the brand or site is aligned with your selected campaigns
- Red: it's been flagged, with a clear reason shown in the popup
- Grey: scanning, or no data available for this page
Checks are split between the website (the company behind the domain) and the product (the brand you're buying). On Amazon you can see both at once.
FOLLOW THE CAMPAIGNS YOU CARE ABOUT
Boycat lets you choose which ethical campaigns to follow and only flags brands that violate the ones you've selected.
Campaigns are maintained by the Boycat team and updated as things change. Follow as many as you want. If a brand violates any one of them, Boycat flags it and tells you exactly which campaign caught it. Switch campaigns from inside the popup and the current page rescans immediately.
Ethical shopping means different things to different people. Some care about labour rights, others about environmental harm, animal welfare, or political spending. Boycat lets you set your own boundaries.
AMAZON PRODUCT SCREENING
Browse Amazon normally. Boycat checks every product page against your active campaigns in the background.
If the brand is flagged, you'll see which campaign it violates, why it was flagged, and alternative products from brands that pass your standards. Click through to any alternative without leaving the page.
Boycat does not change any Amazon prices, listings, or page content.
BETTER BRAND ALTERNATIVES
When something is flagged, Boycat finds alternatives from brands that meet your ethical standards so you can still buy what you need. Alternatives load automatically and appear in the extension popup. One click opens the product on Amazon.
BUILT-IN AD BLOCKER
An ad blocker you can turn on or off from the Protection tab. When enabled it filters ads, banners, and tracking scripts across every site you visit. Pages load faster with fewer distractions. A live count shows how many ads have been blocked this session.
Off by default. One tap to enable.
BUYCATVPN — COMING SOON
BuycatVPN is in active development and will be available for Firefox in an upcoming release. When it launches, it will route your browser traffic through an encrypted tunnel, keeping your browsing private from your ISP and anyone on the same network. Follow Boycat on addons.mozilla.org to be notified when it arrives.
REPORT AN ERROR
If you find a brand that's been incorrectly flagged or a listing that's out of date, you can report it directly from the popup. Reports go to the Boycat team for review.
PRIVACY
Compliance checks send an anonymous request containing only the domain name or brand identifier. Nothing is tied to your account. Boycat does not log which pages you visit, how long you spend on them, or what you purchase.
Optional usage analytics (feature-level only, no browsing data) are off by default and can be changed at any time from the consent screen.
Boycat does not sell user data to anyone. Full privacy policy.
GETTING STARTED
- Install Boycat
- Accept the privacy consent on first launch
- Pick the campaigns you want to follow from the Settings tab
- Browse as normal. Boycat tells you when something comes up.
FREQUENTLY ASKED QUESTIONS
Does Boycat slow down my browser?
No. Scans run asynchronously and do not block page loading. Most complete in under a second.
Does it work on every website?
It runs on every website. Whether a result comes back depends on whether the brand or domain is in the Boycat database. For unknown sites it shows a neutral result and stays quiet.
Does it work on Amazon?
Yes. Boycat is built specifically for Amazon product pages. It reads the brand from the listing and checks it against your active campaigns.
Is the ad blocker like uBlock Origin?
Boycat's ad blocker uses the browser's built-in filtering system and is designed to be lightweight and always-on. It covers the most common ad and tracker networks.
Is Boycat free?
The compliance scanner, brand alternatives, and ad blocker are free. BuycatVPN will require a Boycat Plus or Pro subscription when it launches.
Website | Support | Privacy policy
Rated 4.6 by 14 reviewers
Permissions and data
Required permissions:
- Display notifications to you
- Access browser tabs
- Access your data for all web sites
Required data collection, according to the developer:
- Browsing activity
Optional data collection, according to the developer:
- Authentication information
- Personally identifying information
- Technical and interaction data
More information
- Add-on Links
- Version
- 4.0.0
- Size
- 4.12 MB
- Last updated
- a day ago (29 May 2026)
- Related Categories
- Licence
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Tags
- Add to collection