Expires headers tell the browser whether a resource on a website needs to be requested from the source or if it can be fetched from the browser's cache. When you set an expires header for a resource, such as all jpeg images, the browser will store those resources in its cache.
Where do I put expired headers?
How to Add Expires Headers With . htaccess on Apache Web Server
- Connect to your server using FTP in your preferred FTP client.
- Locate the . htaccess file in the root folder.
- Download a backup copy of the . htaccess file to your local computer. ...
- Add the code snippet below near the top of the file.
What does the Expires header do?
The Expires header contains the date/time after which the response is considered stale. Invalid dates, like the value 0, represent a date in the past and mean that the resource is already expired.
