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SpeedDoctor is an all-in-one WordPress performance analysis and optimization plugin designed to help you achieve blazing-fast website speeds and top Core Web Vitals scores. With a single click, SpeedDoctor scans your site, identifies slow-loading elements, and delivers clear, actionable recommendations to boost your SEO, user experience, and conversion rates.
Version 1.2 New Feature: Added comprehensive PHP code analysis to detect performance issues, security vulnerabilities, and optimization opportunities in your PHP files. 
Version 1.1 Bug Fix: This release focuses on pure analysis functionality and removes all CSS interference and security headers that could cause site styling issues.
Key Features: 
* Comprehensive Performance Audit: Analyze your entire WordPress site or any specific URL for speed, bottlenecks, and optimization opportunities. 
* HTTP Response & Load Time: Instantly see your page’s HTTP status code and total load time for real-world performance insights. 
* Image Optimization Analysis: Detect large, unoptimized images, see their formats (JPG, PNG, WebP, SVG, GIF), and get suggestions for compression and next-gen formats. 
* Script & Plugin Load Times: Identify slow scripts and plugins that impact your site’s speed, with detailed load time breakdowns. 
* Unused CSS Detection: Find and quantify unused CSS selectors and wasted kilobytes to streamline your site’s stylesheets. 
* External Script Audit: List all third-party scripts and their impact on your site’s performance. 
* REST API Endpoint Analysis: Discover the slowest REST API endpoints and optimize your backend performance. 
* Actionable Suggestions: Get prioritized, easy-to-understand recommendations for every detected issue. 
* One-Click Rescan: Instantly re-analyze your site after making changes to see improvements. 
* Plugin Deactivation: Deactivate heavy plugins directly from the report to quickly improve load times. 
* Modern, User-Friendly Interface: Clean, table-based reports for easy reading and decision-making. 
* SEO & Core Web Vitals Focus: All recommendations are designed to help you pass Google’s PageSpeed Insights and improve your search rankings. 
* Secure & Standards-Compliant: Built with WordPress coding standards and security best practices.
Why Choose SpeedDoctor? 
– Improve your website’s SEO and Core Web Vitals scores 
– Reduce bounce rates and increase conversions 
– Identify and fix performance bottlenecks in seconds 
– No technical expertise required – perfect for site owners, agencies, and developers 
– 100% free and open source
<h3>License</h3>
This plugin is licensed under GPLv2 or later. For more information, visit <a href="https://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">https://www.gnu.org/licenses/gpl-2.0.html</a>.

SpeedDoctor – Advanced Performance Analysis Tool

Analyze your WordPress site speed, find bottlenecks, and get actionable SEO optimization tips with SpeedDoctor.

James Luberda

(if you are not familiar with Zipf’s law, you may wish to look at the screenshots first, as they provide a visual context for the following)
Zipfstats is built around Zipf’s law, which states that given some corpus (in this case, a post/page) of natural language, the frequency of any word is inversely proportional to its rank in the frequency table. In a perfect Zipfian distribution, this would mean that the most frequent word in the corpus will occur twice as often as the second most frequent word, three times as often as the third most frequent word and so on. Any given real world corpus, if large enough, will tend to approximate a Zipfian distribution (this also works for cities as ranked by population, though that observation is less useful in this context).
The Zipfstats widget analyzes and reports word frequency by rank of a given single post or page (aka the corpus). The widget shows a small graph that plots the actual frequency-rank distribution of the content against a perfect Zipfian distribution, thus illustrating the degree to which the content follows Zipf’s law. It also provides for a table of the top-ranked words.
Zipfstats only analyzes the core content of a given post/page. It does not incorporate comments into its calculations. By default, it removes shortcode-generated content from its analysis, though you may optionally enable it. Filters, other than do_shortcode() (in the aforementioned case), are not affected in terms of the analysis. Actual output of the original content is unchanged, regardless of the options selected.
Options
<ul>
<li>Show Only to Admin Users (default = on): only admin-level users see Zipfstats output. If unchecked, all users, logged or non-logged, will see it.</li>
<li>Strip Shortcode Content from Analysis (default = on): skips processing of and removes all shortcodes from the content of the post or page prior to analysis. Actual content remains unaffected.</li>
<li>Include Graph (default = on): Display a log-log plot of word frequency data against a perfect Zipf distribution</li>
<li>Include Word Frequencies (default = on): in addition to the Zipf plot, this option includes a table of the top n words in rank order as well as the frequency of their occurrences in raw terms. A clickable header allows the user to toggle between showing/hiding the wordlist.</li>
<li>Expand Word Frequency Table by Default (default = on): if expand is selected, the wordlist (if also selected) will be displayed on initial page load. Unchecked, the user will have to toggle its display manually via a clickable header. </li>
<li>Number of Words to Show (default = 10, max 25): this determines the number of words to appear in the “top n” wordlist table, if the latter is enabled. This option does not affect any calculations.</li>
</ul>
Some things to note:
<ul>
<li>No site data is modified or stored. Widget results are generated on the fly. Zipfstats does not directly initiate any database activity, but merely uses the the $post object to analyze content, and the WordPress widgets API to store a handful of options.</li>
<li>Post/page content will be displayed as normal. If the widget is added to a sidebar, it will appear where placed, again, without any change to existing post/page content.</li>
</ul>
<h4>Future Enhancements</h4>
<ul>
<li>Add site-wide/category-wide/author-wide analyses</li>
<li>Add to admin post/page edit</li>
<li>Add recommendations to better approximate a Zipfian distribution</li>
</ul>

Zipfstats

Zipfstats provides a widget plotting the frequency each word appears in a post/page and its rank (most frequent->least) against a Zipf distribution …

SpeedDoctor – Advanced Performance Analysis Tool vs Zipfstats