Cookies are small files that websites store on your computer to remember information about you
When you visit a website, it can ask your browser to save a small text file called a cookie. That file sits on your device and contains information the website wants to remember — your login status, items in your shopping cart, your language preference, or what you looked at last time you visited. The next time you go back to that site, your browser sends the cookie back automatically, so the site knows who you are and what you were doing.
Most browsers have cookies turned on by default, but some people turn them off for privacy reasons, and then find websites stop working the way they expect. If you've disabled cookies and now a site won't let you stay logged in, or keeps forgetting your preferences, you'll need to turn them back on for that site or for all sites.
Key Takeaways
- Cookies are turned on in most browsers automatically, but you can check your settings to confirm.
- The steps to enable cookies differ slightly depending on whether you use Chrome, Firefox, Safari, or Edge.
- You can turn cookies on for all websites, or only for specific sites you trust.
- Turning cookies on means websites can track some of your activity, so understand what you're trading for convenience.
How to enable cookies in Google Chrome
Open Chrome and click the three vertical dots in the top right corner. Select Settings from the menu. On the left side, click Privacy and security, then click Cookies and other site data.
You'll see three options. Allow all cookies turns cookies on for every website. Block all cookies turns them off entirely. Block third-party cookies in Incognito is the middle ground — it allows cookies from the websites you visit, but blocks cookies from advertisers and other companies tracking you across multiple sites. Choose whichever matches what you need, then close the settings page. The change takes effect when ready.
If you want cookies on for one specific site but off for others, scroll down on that same page to Sites that can always use cookies and click Add. Type the website address and click Add again.
How to enable cookies in Mozilla Firefox
Open Firefox and click the three horizontal lines in the top right corner. Select Settings. On the left, click Privacy & Security. Under the Cookies and Site Data section, make sure the checkbox next to Cookies and site data is checked.
Below that, you'll see options for what Firefox remembers. If you want cookies on for all sites, leave the default setting as is. If you want to block third-party cookies (the ones advertisers use to follow you across the web), check the box that says Only from sites you visit. Close the settings tab when you're done.
How to enable cookies in Safari
Open Safari and click Safari in the menu bar at the very top of your screen. Click Settings (or Preferences on older Macs). Click the Privacy tab. Look for the section labeled Cookies and website data.
You'll see options like Always allow, Allow from websites I visit, and Never allow. Choose Allow from websites I visit if you want cookies on but want to block tracking cookies from advertisers. Choose Always allow if you want full cookie support. Close the window when you're finished.
How to enable cookies in Microsoft Edge
Open Edge and click the three dots in the top right corner. Select Settings. On the left side, click Privacy, search, and services. Scroll down to Cookies and other site data.
You'll see a toggle switch next to Cookies and other site data. Make sure it's turned on (it should be blue). Below that, you can choose whether to Allow all cookies, Block only third-party cookies, or Block all cookies. Select the option that fits your needs and close the settings page.
What cookies do and why websites need them
Cookies serve different purposes depending on who sets them. First-party cookies come from the website you're visiting — they remember your login, your shopping cart, or your font size preference. These are usually harmless and make the site work better for you.
Third-party cookies come from advertisers, analytics companies, or social media platforms embedded in the website. These cookies track what you do across many different websites so companies can build a profile of your interests and show you targeted ads. This is the main reason people turn cookies off — not because cookies themselves are dangerous, but because they enable tracking you may not want.
If you turn cookies off completely, many websites will stop working. You won't be able to stay logged in, sites won't remember your preferences, and shopping carts will empty when you leave. That's why most people either turn cookies on for all sites, or turn on first-party cookies while blocking third-party ones.
The privacy trade-off: what you gain and lose
Turning cookies on makes websites more convenient. You stay logged in longer, sites load faster because they remember your settings, and you don't have to re-enter information you've already given. But convenience comes with a cost: websites and advertisers learn more about what you do online.
If you turn on all cookies, third-party trackers can follow you across the web and build a detailed picture of your interests, habits, and behavior. This information is sold to advertisers, used to build credit profiles, and sometimes shared with data brokers. You don't see this happening — it's invisible — but it's real.
A reasonable middle ground for most people is to allow first-party cookies (so websites work properly) while blocking third-party cookies (so advertisers can't track you across the web). This is what the Block third-party cookies or Only from sites you visit options do. You get most of the convenience with less tracking.
Frequently Asked Questions
Are cookies a security risk?
Cookies themselves are not malware or viruses — they're just text files. But they can be stolen if you use an unsecured WiFi network, and they can be used to track you. If you're on public WiFi, consider using a VPN, which encrypts your connection and protects your cookies from being intercepted.
Will enabling cookies slow down my browser?
No. Cookies are tiny files, usually just a few kilobytes. They won't noticeably affect your browser's speed. The slowdown people sometimes notice when they turn cookies back on is usually because websites can now load their full features, including ads and tracking scripts, which do use more resources.
Can I delete cookies without turning them off?
Yes. You can clear your cookies periodically without disabling them entirely. In Chrome, go to Settings > Privacy and security > Clear browsing data, check "Cookies and other site data", and click Clear. In Firefox, go to Settings > Privacy & Security and click "Clear Data". This removes old cookies but allows new ones to be created.
What if a website says it won't work without cookies?
The website is telling you the truth — it needs cookies to function. You have two choices: enable cookies for that specific site only (most browsers let you do this), or enable cookies for all sites. If you don't trust the site, don't use it. If you do trust it, add it to your exceptions list.
Do I need to restart my browser after enabling cookies?
No. Changes to cookie settings take effect when ready. You don't need to close and reopen your browser, though you may need to refresh the page you're on for the website to recognize that cookies are now allowed.