How can I improve performance score website in the gtmetrix?

by Success Man   Last Updated September 10, 2019 23:04 PM - source

I test my web with gtmetrix. The result like this :

enter image description here

I want to improve grade of add expires headers, compress component with gzip and all recommendation which has a bad grade

How can I do it?

Update :

See my update image :

enter image description here

enter image description here

Tell me how to improve only 4 recommendations. That is add expires headers, make fewer http requests, use cookie free domain and reduce dns lookups

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