Solution: 64% of any website’s page is made up of images. The loading speed of the websites also slows down due to this much contribution of images in a web page. To reduce this loading time we use web performance optimization.

Solution: Optimus WordPress plugin is used for lossless as well as lossy image compression. It automatically reduces the size of the file. Reduction in size is possible up to 70%. There are three versions of Optimus i.e. Optimus HQ, Optimus, Optimus HQ PRO. Speed test tools are used to measure/note down your pages speed performance. WordPress cache enable a plugin used to enable caching.

Solution: HTTP stands for Hypertext Transfer Protocol. For fetching, data from server browser uses HTTP request, and in between client and host. The more HTTP request slower the loading of a page will be.

Solution: For better web performance we use removal of unnecessary characters from the source code like white space characters, comments, new line characters, block delimiters etc.
E.g. the given JavaScript code 
var arr=[]; for(var i=0;i<10;i++) {arr[i]=i}; } 
is equivalent to the code 
for(var arr=[i=0];++i<10;arr[i]=i);

Solution: HTML, CSS and JavaScript are render blocking resources to the DOM. To enhance the speed of your web page these resources should be properly used.

Solution: For better loading time of the page it is always recommended to put JavaScript code at the bottom of the main code of the page before  tag. CSS code should be at the beginning of the code.

Solution: TTFB stands for time to the first byte and measures the responsiveness of server. Its calculation is done as: process request time+ HTTP request time+ HTTP response time. This speed up the website by downloading various smaller images through sockets.

Solution: HTTP 404 is an error which indicates that the client was able to communicate with the server but the server could not find the request. Due to missing of any file 404 error is generated, this is a taxing error for the page.

Solution: Basically Gzip compression is used to compress text data in websites. Gzip compression is very useful in web performance optimization. It compresses web pages, JavaScript and CSS. Gzip is also one of the file formats. Gzip compression can be enabled via webserver configuration. Common webservers where it can me make enable is .htaccess, Nginx, Apache and Litspeed.

Solution: Hotlink protection is a kind of tool. Hotlink protection is related to restricting HTTP, it stops other sites from displaying images of your webpage. We can create a list of hostnames that can access the resources of our website.