Avoid resizing images in HTML
An image that is resized in HTML will definitely slow up the loading speed as the URL requested the original large file size. Best to use thumbnails with specified HTML width and height attribute width=”400″ height=”280″.
Optimize image size by compressing the image file size
There are many ways to optimize image size, by reducing its size without losing the quality of the image. Use image editing software such as Irfanview or Photoshop to compress the file.
For Photoshop user, you can adjust the image quality to its optimized level at 55% and save the file using Save For Web & Devices. refer to the picture below
Minimize HTTP redirects
Minimizing and eliminating unnecessary HTTP redirects will reduce the wait time for site visitors.
Use Content Delivery Network
Content Delivery Network (CDN) is a large scale of distributed server systems deployed at the different region around the globe. Therefore CDN will be able to pull and deliver contents faster depending on the location of the website visitors, this definitely speeds up website loading speed.
Optimize the website with .htaccess caching
The htaccess cache is a method of using browser caching to speed up your site. The basic way for using htaccess caching is by setting up Cache-Control Headers. This is where you specify the type of files to cache and set the number of seconds until it expires.