Cookies are small files websites leave on your phone so they can remember your site preferences or track your browsing activity. Sometimes, a website will show content from a third-party website (for example, “Like” buttons from Facebook, ads or embedded videos) and those other websites might leave a cookie too.
Firefox Klar does not block cookies by default. Here’s how to turn on the cookie blocker for all, just third-party cookies or just third-party tracking cookies.
- Tap the menu button at the top right corner.
- Tap .
- Scroll down to the Privacy section and tap Block cookies.
- Choose Yes to block all cookies or certain types of cookies only (Block 3rd-party cookies only or Block 3rd-party tracker cookies only). Firefox Klar will save your selection and close the menu prompt.
Blocking all cookies: This prevents trackers, but it will also keep websites from remembering anything you’ve told it (for example, you will be asked to click the “Submit” button over and over again).
Blocking third-party cookies: This blocks third-party trackers, but some websites rely on features that load from other domains. Parts of the page (for example, embedded videos or commenting tools) might not work properly.
Blocking third-party tracking cookies: This blocks third-party tracking cookies from known tracking domains, which avoids unexpected breakage from the more aggressive settings while still preventing the user from being followed across multiple websites.