Browser cache is a temporary storage location on your computer where your browser automatically saves website files — such as images, CSS files and scripts — so that pages load faster on subsequent visits.
How does browser cache work?
When you visit a website for the first time, your browser downloads all the files needed to display the page. On a subsequent visit, the browser checks which files are already stored locally and reuses them instead of downloading everything again.
This saves bandwidth and significantly speeds up load time. Files that are stored in the cache include:
- Stylesheets (CSS) — the design of the website
- Scripts (JavaScript) — interactive functionality
- Images — logos, photographs and icons
- Fonts — web fonts such as Google Fonts
Why is browser cache important?
Browser caching is one of the simplest ways to improve the performance of your WordPress website:
- Faster load times — returning visitors see pages load instantly.
- Fewer server requests — your hosting is placed under less strain.
- Better SEO — Google rewards fast websites with higher rankings.
- Lower costs — less data traffic means lower hosting costs.
Clearing your browser cache
Sometimes you want to clear the cache, for example when a website still looks the same after an update. Here is how:
- Chrome:
Ctrl + Shift + Delete(orCmd + Shift + Deleteon Mac) - Firefox:
Ctrl + Shift + Delete - Safari:
Cmd + Option + E
Setting up caching in WordPress
With plugins such as WP Rocket or LiteSpeed Cache you can set caching headers that tell browsers how long files should be kept. A well-configured cache strategy combines browser cache with server-side caching for optimal speed.
