If you’d rather websites not be able to see your browsing activity on other sites, select Block third-party cookies instead. This might make some websites act a little different than you’d expect—if so, just return here and switch to Allow all cookies instead.

If you’d rather websites not be able to see your browsing activity on other sites, select Block third-party cookies instead. This might make some websites act a little different than you’d expect—if so, just return here and switch to Allow all cookies instead.

You may also want to ensure there aren’t any sites in the “Not allowed to use JavaScript” section in the lower half of this page.

Cookies and Java are both enabled on Chrome for iPhone and iPad by default. There’s no way to turn either on or off—they are both always on.

If the Cookies switch is blue or green, cookies are already enabled. You can also check the “Allow third-party cookies” box near the top of the page to allow websites to view your cookies.

If the JavaScript switch was already blue or green, JavaScript was enabled and no changes are necessary.

If you don’t want websites to be able to track your browsing on other websites you visit, select Prevent cross-site tracking.

JavaScript is permanently enabled on Firefox, but you can still change your cookie preferences. If you’re encountering JavaScript errors in Firefox, uninstall and then reinstall Firefox.

Windows: Click the three horizontal lines at the top-right corner and select Settings. Mac: Click the Firefox menu at the top of the screen and select Preferences. [3] X Research source

If you’d rather not allow cross-site cookies to track you, select Strict instead. This could make websites act a little different than you’d expect, so if you run into problems, return to this screen and select Standard instead.

JavaScript is turned on by default in Firefox on Android and iOS—it’s not possible to turn it on and off manually.

If the “Strict” option is selected under “Protection Level,” you won’t receive cross-site cookies—this means that websites can’t use cookies to track your browsing on other sites. If you’re okay with these cross-site cookies, select Standard (default) instead.

If you don’t want websites to use cookies to track your browsing on other websites, toggle the “Block third-party cookies” switch to On as well.

Check the “Block” list below the switch to make sure no sites you want to use are there. If you see a site you want to use JavaScript on, click the three dots next to its name and select Remove.