activity-log.com

Plugin allow you to run most important test for performance: request time, number of database queries, memory usage
You will be able to detect plugin which cause troubles and result with longer waiting time for request results
Testings are executed based on your homepage
<iframe loading="lazy" title="WordPress Profiler – What Slowing Down Your WP" width="750" height="422" src="https://www.youtube.com/embed/3hJbClFbw5s?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
How to use it?
In Dashboard go to Tools->Profiler What Slowing Down
Click on run test on all plugins (first link) and then near wanted plugin, run few tests and compare results
If you get significantly lower results, means that this plugin causing slowness
Hint: Lower numbers are better, means that page load faster without this specific plugin

Profiler – What Slowing Down Your WP

Plugin allow you to run most important test for performance, request time and number of database queries With this Plugin Performance Profiler you wil …

Epsiloncool

Whenever you plan to begin developing applications on WordPress using AJAX technology, you have to solve a number of 
minor issues unrelated to the logic of your application:
<ul>
<li>How to package and transmit data from the browser to the server, so they will not have been distorted?</li>
<li>How to transfer data, if they are multi-dimensional array?</li>
<li>How to implement a custom processing of AJAX response in case, again, it represents a complex set of data (a typical 
example – form sending and on-server validation)?</li>
<li>How to handle data transition errors?</li>
<li>How to debug all this stuff?</li>
</ul>
Usually these issues generates a lot of spaghetti code, moreover, each new request type requires some customization of 
code. Managing all of this, you forget about the function that you would like to implement.
AJAX Manufactory plugin for WordPress have most of these tasks already solved. You can think about functionality and 
business logic instead.
What you can have from the box:
<ul>
<li>A simple function at the client side which allows to send any your complex data from javascript to WordPress server 
side.</li>
<li>An AJAX response wrapper at the server side which gives to you sent data as PHP array and allows you to create 
an AJAX response as a set of simple “commands” like “make an alert”, “set up javascript variable”, “put html text to 
specific html node(s)”, “execute a javascript function”, “go to specific URL” etc.</li>
<li>Automatic execution of “commands” queue at the client side. Additionally you can specify your own callback.</li>
</ul>
<h4>Documentation</h4>
Please refer <a href="http://e-wm.org/ajax-manufactory/#documentation" title="AJAX Manufactory Documentation" rel="nofollow ugc">Documentation</a>.

AJAX Manufactory

Putting "interface part" out of your mind, you can always concentrate on the logic itself. It is increasing programming productivity and lower human errors.



This methodology is good

This plugin allows you to create AJAX applications by simple way. It implements JSON data transfer, data escaping, error handling.

Profiler – What Slowing Down Your WP vs AJAX Manufactory