AI Browser Extensions and Privacy, What They Can See

An AI browser extension can see whatever its permissions allow, which can include every page you open, your browsing history and text you copy. If it has access to all sites, that can cover email, banking and work tools while you use them. Check each extension's site access, set it to run only when you choose, and remove any you do not use.

AI writing helpers, summarizers, meeting tools and sidebars are popular because they work on the page in front of you. That is also why they deserve a review. To do its job, an AI feature may need to send page content to a service. Whether it does, and what happens next, depends on that extension and its privacy policy.

What extensions can reach

Chrome's permissions reference shows the warnings users see. Other browsers based on Chromium, such as Edge and Brave, use a similar system. These are the ones to look for:

• Read and change all your data on all websites: the widest warning. It can cover page content on any site you visit.
• Read your browsing history: the extension can see where you go.
• Read data you copy and paste: the clipboard, which can hold passwords and private text.
• Communicate with cooperating native applications: the extension can talk to a program installed on your computer.
• Access the page debugger backend: a powerful grant that few extensions need.

Some permissions are narrower. Chrome's activeTab gives temporary access to the current page after you act, and it shows no warning. An extension built this way asks for less.

Permissions can also change. Chrome's permission warnings guide says that when an update adds a permission with a new warning, the extension is disabled until you accept it. So read that prompt, and do not accept it by reflex.

A permission shows what an extension may reach. It does not show what the extension collects or where it sends it.

How to check Chrome

1. Open Chrome and select More (three dots) at the top right.
2. Select Extensions > Manage extensions, or go to chrome://extensions.
3. Read the full list. Remove anything you do not recognize or use, by selecting Remove.
4. For each AI extension you keep, select Details.
5. Next to the site access setting, choose On select if the extension allows it. Otherwise pick On specific sites.
6. Add only the sites you need under Allowed sites.
7. Check that Allow in Incognito is off unless you need it.

Google's extension help page covers these steps, and labels can differ slightly between versions. Brave uses the same model at brave://extensions.

How to check Edge

1. Open Edge and go to edge://extensions, or select Settings and more > Extensions > Manage extensions.
2. Review the list and turn off any extension with its toggle.
3. Select Details on each AI extension and limit its site access.
4. To remove one, right-click its toolbar icon and select Remove from Microsoft Edge, then confirm.

An extension marked with a briefcase icon is usually installed by a policy. On a work device, ask your IT team about it. Microsoft explains the basics on its Edge extensions page.

How to check Firefox

1. Go to about:addons and select Extensions.
2. Use the toggle to disable an extension, or the three-dot menu to remove it.
3. Select an extension and open its permissions tab to review optional permissions.
4. Set Run in Private Windows to Don't Allow unless you need it. Firefox leaves this off by default.

How to check Safari on Mac

1. Choose Safari > Settings, then click Extensions.
2. Deselect an extension's checkbox to turn it off, or use Uninstall to remove it.
3. Select Edit Websites to allow, deny or ask for each site.
4. Avoid Always Allow on Every Website unless the extension truly needs it.
5. Leave Allow in Private Browsing off unless you need it.

Apple describes these options in its guide to Safari extensions. On Sonoma or later, extensions that need website access are off by default in private windows.

If you use several browsers, one way to check this quickly is Prycheck. It is a local Mac and Windows app that lists AI extensions across your browsers and sends nothing anywhere. It shows what they are allowed to reach, not what they actually do or send.

How to choose an AI extension you can trust

Before you install, or when you decide whether to keep one, ask these questions:

1. Who makes it? Look for a named company or developer with a real website and support contact.
2. Does it need this access? A grammar tool for one site should not need your history.
3. Does the privacy policy answer the basics? Look for what is collected, where it goes, how long it is kept, and whether it is used for AI training.
4. Does it work on click? An extension that runs when you select it sees far less.
5. Is it still maintained? Check the last update date and support replies.
6. Is there a simpler option? A chat app in its own tab sees only what you paste in.

Install from the official store for your browser. Be wary of a file sent by a stranger, or instructions to turn on developer mode to install an extension.

Habits that limit exposure

• Keep separate browser profiles, one for work and banking and one for trying new tools.
• Keep AI extensions out of the profile you use for sensitive accounts.
• Sign out of AI sidebars when you handle health, legal or financial data.
• Review your extensions every few months, and after any browser migration, since sync can carry extensions between devices.
• At work, ask your IT team which extensions are approved. Admins can manage this with browser policies.

Frequently asked questions

Can an AI extension read my passwords?

It can read what is on a page it has access to, and the clipboard if it has that permission. Password fields and autofilled values may be within reach on those pages. Limit site access and keep AI extensions away from sensitive sites.

Does incognito or private mode stop extensions?

Mostly, by default. Chrome and Firefox keep extensions off in private windows unless you allow them, and Safari turns off those needing website access on recent macOS. Check each extension's setting, because you may have allowed it in the past.

Should I remove all AI extensions?

Not if you use them. Keep the ones you need, set them to run on click or on chosen sites, and remove the rest. Fewer extensions means fewer things to review.