Adding a like and dislike feature to your Blogger website helps you to improve your website's user engagement. Several popular websites use this feature to allow users to express their opinion about a post easily and quickly. In Blogger, this feature is not available by default; to add it, we need to use CSS, HTML, JS and Firebase.

Websites are no longer judged by just their design; nowadays, a good website should be well optimised along with its design, and even a small delay in loading can increase bounce rate. Images also have a good role in website optimisation; if images are not optimised very well, it can cause low performance of the website.

The performance issue is the most common issue faced by owners of websites. A website without a good loading speed can affect user experience and cause loading trouble in low internet connections. The improvement of the website speed is also important, along with developing a good interface.