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Mobile Web Performance Optimization by S. Niranga

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Image size matters

As mentioned in the previous chapter, mobile networks have many limitations compared to a wired connection. So, reducing the file size as much as possible is really essential in mobile web development. According to the data (https://developer.yahoo.com/performance/rules.html), 70-80 percent of sites' bandwidth is consumed by the images. Therefore, delivering smaller file size images with acceptable quality to the mobile will always provide a better outcome.

When it comes to image optimization, there are two key factors that you need to always keep in mind. They are as follows:

  • Resize your images to correct image resolution
  • Reduce the file size.

Resize your images to correct image resolution

There are two methods to measure the size ...

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