DiagnoSEO.com

DiagnoSEO is the ultimate SEO plugin for WordPress in 2025. It includes all features you need to optimize your WordPress website and rank better in search engines. Moreover, it’s the most lightweight and fastest SEO plugin on the market in 2025 (optimized for Core Web Vitals). It’s the fastest SEO plugin according to WP Hive tests. Use the best SEO plugin and boost your organic rankings, traffic, and sales!
Key SEO features:
<ul>
<li>Custom meta title text (essential for SEO)</li>
<li>Custom meta description text</li>
<li>Meta tags templates</li>
<li>Google snippet preview</li>
<li>Custom rel canonical URL</li>
<li>Meta robots control</li>
<li>Optimization for multiple related keywords</li>
<li>Advanced Schema.org settings (review, product, event, etc.)</li>
<li>Breadcrumbs (schema and HTML)</li>
<li>Easy to insert web analytics tracking code (e.g. Google Analytics or Google Tag Manager)</li>
<li>Social settings and previews</li>
<li>Useful SEO checkpoints</li>
<li>XML Sitemap</li>
<li>Feature to redirect attachment page links to image file</li>
</ul>
Unique SEO features:
<ul>
<li>Focus keyword placement checkpoints</li>
<li>Content analyzer checkpoints</li>
<li>Multiple related keywords checkpoints</li>
<li>Advanced SEO settings (you can’t find them in the other SEO plugins)</li>
<li>Lightweight code (less than 100KB)</li>
<li>Minimal usage of memory and database (optimized for Core Web Vitals)</li>
<li>Unique SEO features (used by SEO experts)</li>
<li>Live SEO score</li>
<li>Great UX</li>
<li>Easy to run and customize</li>
<li>Easy to import data and switch from popular SEO plugins (you can import data from Yoast SEO, Rank Math, SEOPress, and many more)</li>
<li>Many many more unique features.</li>
</ul>
Pro SEO features:
<ul>
<li>Related keywords suggestions (data based on real search results analysis and TF IDF algorithm)</li>
<li>Unlocked advanced and useful content quality checkpoints (data based on real search results analysis)</li>
<li>Same as schema.org for better social media accounts connections</li>
<li>LocalBusiness schema.org</li>
<li>Redirections (301, 302)</li>
<li>Google News sitemap (XML)</li>
<li>Multiple schema.org support</li>
<li>Table of contents block</li>
<li>Related posts widget</li>
<li>Featured posts widget</li>
<li>SEO Categories widget</li>
<li>SEO Categories widget for WooCommerce</li>
<li>Advanced WooCommerce metadata support</li>
<li>Anchor text control on posts lists (you can control anchor text on your blog page)</li>
<li>Affiliate link hider (better solution than rel nofollow)</li>
<li>Internal linking suggestions (data based on real search results analysis)</li>
<li>Option to change all external links to nofollow (Multisite supported)</li>
<li>IndexNow support (for super-fast indexation in Bing and Yandex)</li>
</ul>
ChatGPT integration – GPT-3-Turbo or GPT-4 API – technology from OpenAI company (available only in Pro version):
<ul>
<li>Generate or improve metadata based on AI (artificial intelligence) and best SEO practices</li>
<li>Generate SEO-friendly content directly in WordPress editor based on settings</li>
<li>Generate comments based on settings</li>
</ul>
The plugin was created based on over 15 years of experience in SEO and WordPress.
<a href="https://diagnoseo.com/wordpress-seo-plugin/" rel="nofollow ugc">WordPress SEO plugin – read full features list and details</a>
The plugin includes a unique content analyzer and keyword placement checkpoints.
Optimize your posts and pages for the best SEO performance!
Switch your SEO plugin to DiagnoSEO and feel a positive difference!

DiagnoSEO On-page SEO

DiagnoSEO is simply the best SEO plugin for WordPress. It's the most lightweight (less than 100KB) and fastest plugin on the market (optimized for Core Web Vitals). At the same time, it's loaded with useful and unique SEO features. Moreover, it has got the most advanced content analyzer and the most accurate SEO checkpoints for the focus keyword placement. It's the first SEO plugin that supports the IndexNow. Use DiagnoSEO plugin for WordPress and rank higher in search engines!

The Best SEO Plugin for WordPress


It’s very lightweight and easy to set up. Thank you. 


Easy to Use and Setup

Powerful and lightweight SEO plugin for WordPress. The best solution on the market in 2025.

sh1zen

Flexy SEO contains most requested features for your website seo, carrying many options to optimize and analyze the SEO of your website. 
All customizable in few and easy steps.
WHY USING Flexy SEO (WPFS)?
<ul>
<li>All In One: WPFS carries many features to bring you a full control on the SEO.</li>
<li>Easy to use: WPFS was designed to be intuitive, allowing also non experts to be able to make that changes to have a great website. </li>
<li>Performances oriented: WPFS is built to speed up your site, every single module is optimized to ensure the best performance.</li>
<li>Privacy: WPFS does not collect nor send any data.</li>
<li>No subscription email is asked or required.</li>
<li>Free.</li>
</ul>
BENEFITS
<ul>
<li>Improvements in search engine result page rankings. </li>
<li>Fast and with a lower memory usage compared to other SEO plugins.</li>
</ul>
FEATURES
<ul>
<li>Full control over SEO.</li>
<li>Webmaster tools: allow site verification (Google, Bing, Yandex, Baidu).</li>
<li>Social support: support open graph by facebook and metacard data for Twitter, furthermore allow site verification and profile connection in schema.org info (Facebook, Linkedin, Twitter, …).</li>
<li>Adaptive: easy adapts to custom post types or custom taxonomies.</li>
<li>Knowledge Graph.</li>
<li>Standard Breadcrumbs.</li>
<li>Flexed Breadcrumbs: a powerful tool to help you create personalized breadcrumb structure.</li>
</ul>
DONATIONS
This plugin is free and always will be, but if you are feeling generous and want to show your support, you can buy me a 
beer or coffee <a href="https://www.paypal.com/donate/?business=dev.sh1zen%40outlook.it&item_name=Thank+you+in+advanced+for+the+kind+donations.+You+will+sustain+me+developing+FlexySEO.&currency_code=EUR" rel="nofollow ugc">here</a>, I will really appreciate it.

Flexy SEO

Optimize your WordPress website for search engines (SEO) and improve the search engines ranking with this flexible plugin (WPFS).

DiagnoSEO On-page SEO vs Flexy SEO