Google PageSpeed Insights [1] is a great tool to see how your website perform. In case you got a poor score, here is a series of articles with easy to implement solutions to solve most of the issues.

This allowed me to go green on the Google PageSpeed Insights [1], going up from a score of 17 on mobile (Fig 1) to 89 (Fig 14), and up from 35 (Fig 3) to 89 on desktop (Fig 16).

Optimize images

This allowed me to pass the Google PageSpeed [1] test Optimize images [2] on a website, going up from a score of 17 on mobile (Fig 1) to 51 (Fig 2), and up from 35 (Fig 3) to 59 on desktop (Fig 4).

Mass process and update a batch of images using GIMP [3]

Eliminate render-blocking JavaScript and CSS in above-the-fold content

This allowed me to pass the Google PageSpeed [1] test Eliminate render-blocking JavaScript and CSS in above-the-fold content (along with Leverage browser caching [6]) on a website, going up from a score of 51 on mobile (Fig 5) to 72 (Fig 6), and up from 59 (Fig 7) to 79 on desktop (Fig 8).

Fix Google PageSpeed Eliminate render-blocking JavaScript and CSS in above-the-fold content [4]

Leverage browser caching

This allowed me to pass the Google PageSpeed [1] test Leverage browser caching [5] (along with Eliminate render-blocking JavaScript and CSS in above-the-fold content [4]) on a website, going up from a score of 51 on mobile (Fig 9) to 72 (Fig 10), and up from 59 (Fig 11) to 79 on desktop (Fig 12).

Fix Google PageSpeed leverage browser caching in htaccess [6]

Enable compression

This allowed me to pass the Google PageSpeed [1] test Leverage browser caching [7] on a website, going up from a score of 72 on mobile (Fig 13) to 89 (Fig 14), and up from 79 (Fig 15) to 89 on desktop (Fig 16).

Fix Google PageSpeed enable compression in PHP and htaccess [8]