One of the nifty ways to speed up a website is using some quick htaccess cache control. If you allow your website to cache page content locally, then users will have faster load times of your website as they browse around.
Open your htaccess file
To enable cache control on your website, open your primary .htaccess file. Usually located inside of the public_html folder on your web server. Most website will already have a .htaccess file, so you can simply edit yours and add the cache control lines below.
Don't have a .htaccess file?
No worries. You can create one very quickly. You can either make one locally on your computer and upload the file to your web server, or create one using an online manger like cPanel.
Either way, create a new file on in the root of your public website directory and name it .htaccess. You may need to enable viewing of hidden extensions and enable editing file extensions, depending on the method you chose to use.
You can also create an empty text file and rename it to ".htaccess", without any actual file name. Just the extension. I usually end up doing this a lot.
Enable htaccess cache control
Inside of your .htaccess file, you need to add the following code in order to enable htaccess cache control:
Using the mod_expires module inside of htaccess, I set the expiration time (aka cache) time for each of the file types. Feel free to change the expiration time to your hearts desire.
Typically, I set the CSS/JS cache time to be a month or more and the images to be even longer. My reasoning is that if I am more likely to make changes to the design of my sites far more often than changes to images. You know?