Web

Why a Webpage Can Still Look Old After You Refresh It

You know a website has changed, but your browser still shows the old logo, an earlier image, or styling that should have disappeared. You press refresh, yet the page still does not look right. The usual explanation is caching: keeping a temporary copy of web content so it does not have to be transferred again every time it is needed. Caching makes ordinary browsing quicker and reduces unnecessary data transfer, but it also means that loading a page is not always the same as downloading every part of it again.