how can i use googel inspect netword to know how to increase my website perfomance

Question

my web application is slow i don't know why i use php with firebase, but i think css and js files its the reason , its take too long time as you can see in image how i can increse perfomance of my website, i try to use inspect-> network to see how much time every file take to excute on my web application and i see that the problem in css and js but i don't know how to fix it enter image description here

Answer 1

I think you use a bad algorithm to do your job or garbage code you need to check js files how it work and use modern js code instead of nested loop of nested if statement all of that maybe one of reason why your website is slow