Most plugin or server-based caches will take care of those for you.
Here’s a whole bunch of specific details: https://codex.wordpress.org/WordPress_Optimization
Also, make sure that you use more than one speed test so that you have a good variety of results. Besides Pingdom, I also recommend https://www.webpagetest.org/ and https://gtmetrix.com/
Ok, I tested 7 different plugins from the list on the site you suggested and none of them corrected my errors on Pingdom. I also tested on the other two speed test sites with the same errors.
When reading the documentation on these plugins, the .htaccess file is always referenced. I don’t have a .htaccess file as I am running Windows.
Thoughts
Thanks again,
Jim
In that case, I recommend choosing a caching plugin you like the best, then following up with their support about its operation on Windows-based servers.
(or, of course, move your site to a Linux-based server) 😉
Also, make sure you check and optimize your page load speed for both 1st-time and return visitors. I use this tool to check both.
Thanks James, I took your advice and had my site moved to a Linux server and all issues are resolved.
Thanks to you pushe for the additional page test link.
Jim