Chrome Browser Extensions: How to Install Them Safely and What to Avoid

Chrome extensions are small add-on programs that install into the Chrome web browser to give it extra features. Some extensions block ads, others help you save passwords, check your spelling, or read text aloud. Extensions can genuinely make your browser more useful — but they also carry risks if you install the wrong ones.

Because extensions can see what you do in your browser — including websites you visit, text you type, and even passwords — a malicious extension could steal your personal information. Unfortunately, some bad extensions disguise themselves as useful tools. This is why it is important to install extensions only from the official Chrome Web Store, check who made the extension, and look at user reviews before installing.

The Chrome Web Store is Google's official marketplace for extensions, found at chromewebstore.google.com. Every extension on the Web Store has been submitted to Google and reviewed, though not every extension is fully vetted — reviews and developer reputation still matter. Extensions from well-known companies (Google, Microsoft, Adobe, LastPass, Grammarly) are generally safe. Extensions from unknown developers with very few reviews should be treated with caution.

Permission warnings are your first line of defense. When you install an extension, Chrome tells you what it wants access to — for example, "Read and change all your data on websites you visit." This is a very broad permission. If a simple extension asks for much more access than it needs to do its job, that is a warning sign.

It is also good practice to periodically review which extensions you have installed and remove any you no longer use. Fewer extensions means fewer potential vulnerabilities.