devmarvs

Block Weight Inspector adds a sidebar panel in the block editor that maps blocks in the current post/page to the CSS and JS assets they register. It estimates local asset sizes, highlights top offenders, and exports a JSON report. It can also generate a suggested conditional-loading snippet to help you dequeue assets when a block is not present. 
It also adds a Tools -> Block Weight Inspector screen for auditing existing posts without opening the editor. 
Note: The inspector preserves block comment delimiters when analyzing content so <code>parse_blocks()</code> remains accurate after sanitization.
Key features:
<ul>
<li>Block -> asset mapping using registered block metadata.</li>
<li>Estimated size for local assets.</li>
<li>Top offenders summary and full asset list.</li>
<li>JSON export for sharing or auditing.</li>
<li>Suggested conditional-loading rules (review before use).</li>
</ul>

Block Weight Inspector

See which blocks load which CSS/JS assets on a page and estimate their weight.

ChrisHurst

MyWebsiteAdvisor

Simple Debug Plugin for WordPress analyzes the performance of your WordPress website and shows you the slowest performing functions. 
Also has the ability to display other useful information such as error log, PHP.ini variables, and DB performance varbailes. 
MySQL Database Optimization tool is also included. 
You can also enable and view the debug.log with no editing of wp-config.php file necessary!
Developer Website: http://MyWebsiteAdvisor.com/
Plugin Page: http://MyWebsiteAdvisor.com/tools/wordpress-plugins/simple-debug/
Video Tutorial: http://mywebsiteadvisor.com/learning/video-tutorials/simple-debug-tutorial/
We are looking for testimonials and live examples of our plugins on your website! 
Please submit your website or testimonial here: http://MyWebsiteAdvisor.com/testimonials/ 
If we choose your testimonial or website we can link to your site and generate some free traffic for you!
Requirements:
<ul>
<li>PHP 5.3</li>
</ul>
To-do:

Simple Debug

Analyzes WordPress website performance, helps to locate slow function hooks.

Block Weight Inspector vs Simple Debug