A browser cache stores reusable website responses, such as images and other page resources, so a later visit may not need to download everything again. Clearing it removes saved copies and lets the browser request those resources afresh.
Why websites keep local copies
As MDN explains, reusing a stored response can reduce network work and make loading faster. The browser also uses freshness rules: some copies can be reused, while others need checking with the server. A check can confirm that the existing copy is still valid without downloading the whole thing again.
Caching happens in more places than your browser. Shared caches can sit between you and the original website. Deleting a local copy therefore does not empty every cache involved in delivering a page.
When a reset can help
Google’s troubleshooting guidance lists loading and formatting problems as reasons to clear cached information. It also notes that pages may feel slower afterward as resources load again.
Here is a useful troubleshooting note to write before changing anything: “The navigation looks broken on this page, but the rest of the site opens.” Record the page address and what you expected. That is more helpful than simply remembering that the site was “weird.”
Choose what you delete
Cache and cookies often appear near each other in browser settings, but they do different jobs. Read our cookie explainer before deciding to remove both.
Our suggested approach: save unfinished work, reload the affected page, and then consult your browser’s official help if the problem persists. In any deletion dialog, review the time range and selected categories. Do not assume the word “clear” refers only to temporary pictures.
If the problem remains after a refresh, tell the site owner the exact page and symptom. Repeating the same reset is less informative than reporting what changed—or what did not. A cache is one possible part of the explanation, not a diagnosis of every broken website.
Curious about the step before a page loads? Read how DNS finds a website.
