Web browsers store small files called "cookies" that contain information about a user such as a password and name. You may not want to store them on your computer for privacy reasons. Here is a step-by-step guide to help you delete cookies on your Safari browser. Deleting cookies is simple: go to the browser settings menu, find out where they are and select the delete option.
Steps

Step 1. Select "Preferences" from the main Safari preferences menu

Step 2. Under the "Security" tab, select "Show Cookies"

Step 3. Select "Delete All"
Alternatively, if you only want to delete a specific group of files, select it and click delete.

Step 4. Check out the warning window and click "Delete"
The cookies have now been deleted!

Step 5. Click "Finish" and close the dialog box
Method 1 of 4: For Safari 5.1 (for OS version Lion and Snow Leopard): New menu

Step 1. Select the "Preferences" menu from the Safari menu

Step 2. Under the "Privacy" panel, select "Details"
This will display different data. Please note that Safari 5.1 has changed the display of this menu to be more "human", but less detailed than in previous versions, which means you no longer have the option to delete cookies for a specific site only.
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If you'd like to have more options when uninstalling, check out the workaround below.
Delete Cookies Using the Safari Web Browser Step 8 Step 3. Select "Delete All"
Alternatively, if you only want to delete cookies for several selected sites, select them and click on the "Delete" button.
Delete Cookies Using the Safari Web Browser Step 9 Step 4. Check out the warning window and click "Delete"
The cookies have now been deleted!
Delete Cookies Using the Safari Web Browser Step 10 Step 5. Click "Finish" and close the dialog box
Method 2 of 4: For Safari 5.1 (Lion and Snow Leopard OS): Bypassing the new menu
Delete Cookies Using the Safari Web Browser Step 1 Step 1. Select "Preferences" from the main Safari menu
Delete Cookies Using the Safari Web Browser Step 12 Step 2. Under the Advanced panel, select Show Developer Menu In Panel
This will enable you to view a more detailed list of cookies that are associated with a specific site.
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If you just want to remove the binding of cookies to sites, use the previous method.
Delete Cookies Using the Safari Web Browser Step 13 Step 3. Select "Show Web Inspector"
It is in Developer menuthat you just connected. Step 4. Under the "Resources" panel, expand the "Cookies" menu.
Here you can view the cookies of various sites. Step 5. To delete cookies, use the "X" button.
Just highlight the ones you want to remove and then hit the "X" at the bottom of the window. Step 6. Close the web inspector tool.
If you want to remove the developer menu again, simply go back to Settings> Advanced and uncheck Show developer menu in panel.
Method 3 of 4: Permanently deleting cookies
Step 1. In the main menu select "Settings". 2 In the Security panel, check Never next to Accept Cookies
Method 4 of 4: Disable WiFi or Ethernet
Step 1. Disable WiFi or Ethernet connection. 2 Click Safari> Preferences> Privacy> Delete Site Data, click on Delete Site Data again to completely delete the tricky, tenacious cookies. 3 Click Safari> Reset Safari to clear history / cache, then click Safari> Quit Safari. 4 Connect a WiFi or Ethernet connection. 5 Restart Safari. 6 See if there are any other annoying factors that you would like to get rid of
They shouldn't be there anymore.
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