Chrome browser allows third-party cookies by default, but users can manually turn them off to improve privacy. 1. Go to Settings → Privacy and Security → Website Settings → Cookies and other website data; 2. Check "Block third-party cookies" to block cookies in external domain names such as advertisers; 3. If some websites are abnormal, you can click the "Add" button to temporarily allow specific sites to use cookies; 4. Advanced users can further control cookie behavior through the experimental function of chrome://flags; 5. The private browsing mode blocks third-party cookies by default, but does not affect the normal settings. Turning off third-party cookies helps reduce tracking, but may affect compatibility of some websites and needs to be adjusted as appropriate.
Chrome browser allows third-party cookies by default, but if you want to improve privacy protection and reduce ad tracking, you can manually turn off third-party cookies. The operation is actually not complicated, but many people may not know where the specific path is.

Go to the privacy section of Chrome settings
Open Chrome browser and click three dots in the upper right corner → Settings → Privacy and Security → Website Settings → Cookies and other website data.
This is the core entrance to managing cookies. In the Cookies and Other Website Data page, you will see several options:
- Default: All cookies are allowed
- Block third-party cookies in invisible mode
- Block all cookies (not recommended)
There is a key point here: The option "Block third-party cookies" is not checked by default . You need to enable it manually to truly restrict third-party cookies.

Turn on the "Block third-party cookies" option
On the "Cookies and Other Website Data" page, find the "Block Third-Party Cookies" item and check it.
The effect of this is: when you visit a website, only the cookies of the website itself are allowed, and cookies from other domain names such as advertisers and analytics providers will be automatically blocked.
It should be noted that some websites may experience functional abnormalities, such as unstable login status or failure to load certain services. At this time, you can choose to temporarily close this setting, or add exception sites.

Add exceptions or temporarily allow third-party cookies
If you find that a website cannot use normally after enabling "Block Third-Party Cookies", you can temporarily release it:
- Click the "Add" button at the bottom of the "Cookies and Other Website Data" page
- Enter the website address where you want to allow cookies (for example
https://example.com
) - Check "Allow this website to use cookies and other data"
This method is suitable for websites that you trust and rely on third-party services. For example, some e-commerce platforms, social platforms or online video websites.
Other precautions
- Chrome has phased out third-party cookies , but they are still supported, so manual settings are still necessary.
- If you are an advanced user, you can also further control cookie behavior through the experimental functions of
chrome://flags/#same-site-by-default-cookies
andchrome://flags/#cookies-without-same-party
. - When using private browsing mode, third-party cookies are blocked by default, but they will not affect the settings in the regular mode.
Basically that's it. After setting it once, you basically don’t need to move again unless you encounter compatibility issues and need to adjust it temporarily.
The above is the detailed content of How to block third-party cookies in Chrome. For more information, please follow other related articles on the PHP Chinese website!

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