How to Speed Up WordPress Sites?

By April

In the 84th episode of Semantic Mastery's weekly Hump Day Hangouts, one participant asked about the ways on how to improve the site speed of WordPress sites.

The exact question was:

wondering if you can share some ways that you speed up your wordpress sites… some plugins maybe?
what do you use to leverage browser caching, optimize images, eliminate render-blocking JavaScript and CSS, etc…
thank you so much for all the knowledge you share with the community.
IFTTTSEO V2 is fantastic!

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