Faster Load Times Through Image Optimization
Despite the fact that more Internet clients now have much faster connections, an huge amount of the internet population still have slow connections, at home and especially on mobile devices. In order to keep from excluding them when you're planning your site, optimizing images is an extremely important step for improving the load time of your site. Google and other search engines also give preference to pages with faster load times so image optimization helps with SEO optimization.
By and large, all the content on your site will load quickly even with the slowest internet providers. Large unoptimized images are the main cause for slow loading times in websites. It is important to find a nice balance between a lack of images and so many images that loading takes forever. Websites that load slowly are also more likely to have visitors leave for a site which loads more quickly and easliy.
You can remove extra information that is embedded into images by using Photoshop or other image editing software. This information isn't necessary for use on the web and can greatly affect the size of images. Images online for the most part only display at 72 dpi, with exception for retina screens, this is another area which can be addressed.
There are many online image editors and optimizers which you can use to fix images to improve load time. Just a few are Dynamic Drive, Imageoptimizer, and Kraken. There is also free software such as Gimp which works much like Photoshop and can perform these functions and much more.