Browser extensions are some of the most useful tools on your computer. Ad blockers, password managers, grammar checkers, coupon finders: one click and your browser gets smarter.
But many extensions can see the pages you visit and, in some cases, what you type on them. Most are honest. Some aren’t. Here’s how to tell the difference before you click Add to Chrome.
Why Extensions Can Be Risky
When you install an extension, you’re giving it permissions. A grammar tool, for example, needs to read the text you type to do its job. That’s fine when the developer is trustworthy.
The risk comes from extensions that ask for more access than they need, collect browsing data to sell, or change hands. A popular, harmless extension can be sold to a new owner who later pushes an update that adds tracking or ads. That’s why it’s worth checking extensions before installing and reviewing them from time to time afterward.
7 Checks Before You Install
1. Install Only From the Official Store
For Chrome, that’s the Chrome Web Store. Avoid extensions offered through pop-ups, emails or download sites.
2. Look for Trust Badges
The Chrome Web Store shows badges such as Featured and Established publisher on some listings. They aren’t a guarantee, but they mean Google has looked more closely at the extension or its developer.
Note: Features and policies may vary by plan, region and app version, and can change at any time. Check the official help center for the latest information.
3. Check the Developer
Scroll to the developer details on the listing. A real company or developer usually has a website, a privacy policy and a support contact. A missing website or a generic email address is a yellow flag.
4. Read Recent Reviews
Sort reviews by most recent. Complaints about new ads, redirected searches or the extension “suddenly changing” can be a sign it was sold or updated badly.
5. Check the Last Updated Date
An extension that hasn’t been updated in years may not work well with today’s browsers and may not get security fixes.
6. Read the Permission Prompt
When you click Add, Chrome shows what the extension can access. The big one to notice is the ability to read and change your data on all websites. Ask yourself whether the extension truly needs that. A tool that only works on one site shouldn’t need access to every site.
7. Check the Privacy Practices Section
Each Chrome Web Store listing has a Privacy practices section showing what data the developer says it collects. If a simple tool collects your browsing history or personal communications, skip it.
After You Install: 3 Habits That Keep You Safe
- Limit site access. Go to chrome://extensions, click Details on an extension, and set Site access to On click or On specific sites.
- Remove what you don’t use. Fewer extensions means fewer risks and a faster browser.
- Review every few months. If an extension starts showing ads or behaving strangely, remove it right away.
Red Flags at a Glance
- It asks for access to all websites but only does one small thing.
- It promises free premium features of a paid service.
- Recent reviews mention new ads or changed search results.
- It came from a pop-up asking you to “install to continue.”
Frequently Asked Questions
Are all extensions in the Chrome Web Store safe?
No. Google reviews them and removes many bad ones, but some get through. These checks help you catch what slips past.
Can an extension steal my passwords?
An extension with broad access to websites could, in theory, read what you type. That’s why permissions and developer trust matter so much.
Do these tips work for Edge and Firefox?
Yes. Both browsers have their own add-on stores and permission prompts, and the same checks apply.
The Bottom Line
Official store, trusted developer, sensible permissions and recent good reviews. Spend one minute checking, and you get all the benefits of extensions without handing your browsing data to a stranger.
Related Guides
- 8 Chrome Extensions That Make Everyday Browsing Faster (Checked for 2026)
- Best Free Password Managers in 2026: Which One Should You Use?
- How to Spot a Fake App Before You Download It (7 Warning Signs)
- How to Turn On Two-Factor Authentication (2FA) for Your Most Important Accounts
Explore more in our Best Browser Extensions hub.
Disclaimer: This article is for general information only and is based on details available at the time of writing. Prices, plans, features, release dates, policies and availability can change at any time and may vary by country. Please verify the latest information on the official website of the company or product mentioned before making any decision or purchase. This is not medical, financial, legal or security advice; consult a qualified professional for your situation. Next DigiTech is an independent website and is not affiliated with or endorsed by the companies mentioned; all trademarks belong to their respective owners. We are not responsible for any loss or decisions made based on this content.
