Delete Cookies and Cache in Safari
You can choose to delete all your stored cookies and caches or only specific data you want to remove, leaving the others behind.
Delete Safari Caches
If you prefer to leave the cookies in place and delete only the caches, do so through the Developer menu on the Safari menu bar. The Developer menu isn’t enabled by default. You turn it on in the Safari preferences menu and then clear the caches: Select multiple sequential websites using the Shift key. Select the first cookie, then hold the Shift key and select the second website. Any websites in between the two are selected. Use the Command key to select noncontiguous websites. Select the first cookie and then hold the Command key as you select each additional cookie. Select Remove to delete the selected cookies.
Corrupt Cookies Affect the Safari Experience
When a web browser accumulates cookies over a long time, bad things can happen. Cookies eventually become out of date, consuming space while serving no benefit. Cookies can also become corrupt from Safari freezes, power outages, unplanned Mac shutdowns, and other events. Eventually, you may find that Safari and some websites no longer work well together, if at all. Troubleshooting the reason Safari and a website fail to work well together is challenging. A corrupt cookie or cached data may be the culprit.