TEST 3: PERCENT IMAGE WEIGHT
For fastest mobile page speed use the correct format for your images. For example, saving a simple graphic as a JPEG rather than a PNG can cut its file size by more than half. Compress and resize your images. Advanced optimization techniques will squeeze as much performance juice as possible.
The number of images on a page is the second greatest predictor of conversions. On a retail page, graphic elements such as favicons, logos, and product images easily comprise up to two-thirds of a page’s total weight. Site visits that convert users have 38 percent fewer images than sessions that didn’t convert.
Test the percentage of page weight from images on your WordPress site at Pageweight. The test page will open in a new tab. Just fill in your site’s URL and click the blue “Show Me!” button. When the test is done, make a note of the “Percent Total of Image Weight” in the bottom center section.
What is your site’s percentage of page weight from images?