The 20-Minute Browser Cleanup Guide: Extensions, Saved Logins, and Sync Settings

Your browser knows more about you than most of your friends do. It remembers your logins, your addresses, your card numbers, and every extension you installed in a moment of optimism and never removed. Twenty minutes of cleanup, done properly, will make it faster, safer, and less leaky. Here is how to do it, in the order that matters.

Set a timer. This is a maintenance job, not a project, and the goal is to finish with a browser you understand, not a perfect browser you never get around to.

Step 1: Audit your extensions

Open your extensions page and look at everything installed. For each one, ask three questions: do I still use it, does it come from a developer I trust, and does it need the permissions it has? Remove anything you do not recognize or have not used in months. Extensions are small programs with broad access to the pages you visit, and an abandoned extension is a liability that nobody is maintaining.

Pay attention to permission changes. An extension that once only read one site and now asks to read all sites deserves a second look. If a useful extension recently changed hands or started behaving oddly, remove it and find an alternative. The Chrome Manifest V2 extensions fix guide explains why some older extensions stopped working and what to replace them with, which is a good prompt for this audit.

Step 2: Clean up saved logins

Open your saved passwords list. Delete logins for sites you no longer use, and look for duplicates and weak passwords. If you are still letting the browser be your password manager, this is the moment to reconsider. A dedicated password manager gives you stronger generation, better breach alerts, and access across devices without tying everything to one browser. The password manager setup guide walks through doing this in about 30 minutes, and it pairs naturally with this cleanup.

While you are here, turn off the browser's offer to save passwords for anything truly sensitive, such as your bank, if your password manager already covers it. Two systems saving the same secrets is not twice as safe. It is twice the attack surface.

Step 3: Review what syncs, and where

Sync is convenient and invisible, which is exactly why it needs review. Check what your browser syncs: passwords, history, open tabs, extensions, settings, payment methods, addresses. Turn off anything you do not need synced, especially payment methods and addresses if you only use them on one device.

Then check signed-in devices. Remove old phones, sold laptops, and any device you no longer own. If your browser offers to encrypt synced data with your own passphrase instead of your account password, consider turning that on. It adds a step when you sign in somewhere new, and it means your synced data is protected even if your account is compromised.

Step 4: Clear cookies, site data, and old permissions

You do not need to nuke everything. Clear cookies and site data for sites you do not use regularly, and keep logins for the handful of sites you visit daily. Then review site permissions: camera, microphone, location, and notifications. Revoke access for any site that does not clearly need it. A shopping site from three years ago does not need your location, and a news site does not need to send you notifications.

Check your notification permissions specifically. Notification spam is not just annoying. It is a phishing channel, because fake alerts are designed to look like system messages. If a site sends notifications you never asked for, revoke it.

Step 5: Fix autofill, search, and homepage hijacks

Autofill is a quiet privacy leak. Remove old addresses, phone numbers, and payment methods you no longer use. Then check your default search engine, homepage, and new tab page. If any of them changed without you changing them, an extension or installer did it, and that is a red flag. Reset them to what you chose, and remove the extension responsible.

Finally, update the browser itself. Most browsers update automatically, but check anyway. An outdated browser with known vulnerabilities undoes every other step in this guide.

Make it a habit, not a chore

Repeat the extensions audit monthly and the full cleanup quarterly. Put a recurring reminder on your calendar for the first Sunday of each month, and keep it to twenty minutes. The browser cleanup guide you actually repeat beats the perfect cleanup you do once.

If this cleanup made you think about what else is floating around the internet under your name, the guide to removing personal data from data brokers is the logical next step. Your browser is the front door. Data brokers are the back rooms. Both deserve a look.