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Websites store information such as site preferences and login status in "cookies" on your computer. Learn how to delete cookies in Firefox.

[[Cookies - Information that websites store on your computer|Cookies]] are stored on your computer by websites you visit and contain information such as site preferences or login status. This article describes how to delete cookies in Firefox. * To clear your browsing history, cookies, and temporarily cached files at once, see [[Delete browsing, search and download history on Firefox]]. * To prevent websites from storing cookies on your computer, see [[Block websites from storing site preferences or login status in Firefox]]. __TOC__ = Delete cookies for a single site = To delete cookies for one website: {for not fx60} # [[T:optionspreferences]] # [[T:customhistory]] # Click {button Show Cookies...}. The Cookies window will appear. #;{for not fx56}[[Image:Privacy - show cookies - firefox 38]]{/for}{for =fx56}[[Image:Fx56CustomHistory-ShowCookies]]{/for}{for fx57}[[Image:Fx57CustomHistory-ShowCookies]]{/for} # In the '''Search:''' field, type the name of the site whose cookies you want to remove. The cookies that match your search will be displayed. #;{for win}[[Image:Privacy - show cookies - remove selected - firefox 38]]<br>{/for}{for win}{for not win10}'''Tip:''' Select the first cookie and press {key Shift + End} to select all the cookies in the list.{/for}{/for} # Select the cookie(s) in the list to remove and click {button Remove Selected}. # {for win,linux}Click {button Close} to close{/for}{for mac}Close{/for} the Cookies window. Close the about:preferences page. {/for} {for fx60} # [[T:optionspreferences]] # Select the {menu Privacy & Security} panel and go to the '''Cookies and Site Data''' section. #;[[Image:Fx60settings-CookiesAndSiteData]] # Click the {button Manage Data…} button. The Manage Cookies and Site Data dialog will appear. # In the '''Search websites''' field, type the name of the site whose cookies you want to remove. Items that match your search will be displayed. #;[[Image:Fx60ManageCookiesAndSiteData-RemoveSelected]] #* To remove all cookies and [https://developer.mozilla.org/docs/Web/API/Storage_API storage data] for the website, click {button Remove All Shown}. #* To remove selected items, select an entry and click {button Remove Selected}. # Click {button Save Changes}. # In the ''Removing Cookies and Site Data'' confirmation dialog that opens, click {button Remove}. # Close the about:preferences page. <!--We should define Site Data, if we explain how to delete cookies for individual websites using the Manage Data and Clear Data options available in the Privacy & Security panel's "Cookies and Site Data" section. Site storage is defined here: https://developer.mozilla.org/en-US/docs/Web/API/Storage_API --> {for =fx60}<!-- This option was removed in Firefox 61. See https://support.mozilla.org/en-US/kb/delete-cookies-remove-info-websites-stored/discuss/7496 and bug 1348223 --> {note}'''Note:''' You can remove individual cookies for a specific website from the [[Firefox Page Info window|Page Info window]] {menu Security} tab {button View Cookies} button, in [[Find what version of Firefox you are using|Firefox version]] 60 and below.{/note} {/for} {/for} = Delete all cookies = To delete all cookies stored on your computer, {for not fx60}either open the Cookies window as explained above and use the {button Remove All Cookies} button,{/for}{for fx60}either go to your '''Cookies and Site Data''' settings as explained above, click {button Clear Data…} and then click {button Clear} to remove all cookies and site data{/for} or else do the following: {for fx57} # Click the menu button [[Image:Fx57Menu]] and click {menu Library} (or click the Library button [[Image:57 library icon]] in the toolbar). # Click {menu History} and then click {menu Clear Recent History…}. # Set '''Time range to clear''' to '''Everything'''. # Click on the arrow next to '''Details''' to expand the list of history items. # Select '''Cookies''' and make sure that other items you want to keep are not selected. # Click {button Clear Now} to clear the cookies and close the Clear Recent History window. {/for} {for not fx57} # Click the menu button [[Image:New Fx Menu]], choose {button History} and then {menu Clear Recent History…}. # Set '''Time range to clear''' to '''Everything'''. # Click on the arrow next to '''Details''' to expand the list of history items. # Select '''Cookies''' and make sure that other items you want to keep are not selected. #;{for win}[[Image:ab963d736461b221f497eb33a7f09b1a-1260044801-604-2.png]]{/for}{for mac}[[Image:ab963d736461b221f497eb33a7f09b1a-1260044801-604-1.png]]{/for} # Click {button Clear Now} to clear the cookies and close the Clear Recent History window. {/for}