Frode Heimen

THiS SEO is a focused WordPress SEO plugin built for SEO professionals and agencies who need to work fast. No score widgets, no banner ads, no tracking. Just the workflow tools you actually need.
Used by SEO professionals who already use dedicated analysis tools and AI — THiS SEO handles the technical execution inside WordPress without getting in the way.
<h4>Core Features (Free)</h4>
Meta Editor 
Edit SEO titles and meta descriptions for all your pages and posts in one clean overview. See character counts, spot missing meta, and save everything in seconds without opening each post individually.
Schema Library 
Build and manage JSON-LD schema templates with dynamic variables like <code>{{post_title}}</code>, <code>{{post_url}}</code>, and <code>{{featured_image}}</code>. Assign templates globally or to specific pages. Supports Article, Organization, WebApplication, SoftwareApplication, AboutPage and more.
Redirects 
Create and manage 301, 302 and 307 redirects directly from the WordPress admin. Import and export via CSV. Fast, lightweight redirect handler with no database overhead on uncached requests.
404 Log 
Automatically log all 404 errors on your site. See which URLs are returning not found, how often, and where users came from. Turn common 404s into redirects in one click.
Broken Link Scanner 
Scan any page for broken internal and external links directly from the admin. See HTTP status codes, identify dead links, and fix them before they hurt your rankings.
Sitemap 
Auto-generated XML sitemap at /sitemap.xml. Automatically pings Google and Bing on save. Integrates with robots.txt automatically.
SEO Lock™ – PIN Protection (Free) 
Protect your most sensitive SEO settings with a 4-digit PIN. Uses bcrypt hashing, rate limiting (3 attempts, 15-minute lockout), and session management. Prevents accidental or unauthorized changes to redirects, schema, and robots.txt.
Audit Log 
Track every change made to your SEO settings. See who changed what, when, and from which IP address.
Conflict Detection 
Automatically detects other active SEO plugins and alerts you to potential conflicts.
<h4>Pro Features</h4>
Pro unlocks additional power for larger sites and agencies:
<ul>
<li>Meta Editor – Bulk edit all pages, posts and custom post types in one view</li>
<li>Robots.txt Editor – Full editor with backup, restore and Cloudflare auto-purge</li>
<li>Breadcrumbs – Schema-enriched breadcrumbs via shortcode with drag-to-reorder</li>
<li>URL Replace – Replace URLs across all content including Elementor serialized data</li>
<li>Strip Taxonomy Base – Remove /category/ and /tag/ base with automatic redirects</li>
<li>Custom Schema Variables – Map ACF/postmeta fields to schema template variables</li>
<li>llms.txt PIN protection – PIN-lock the llms.txt editor</li>
<li>Email Alerts – HTML email notifications for security events</li>
<li>Integrity Check – Detects unauthorized changes to plugin files</li>
<li>Cloudflare Integration – Auto-purge robots.txt and sitemap on save</li>
<li>Agency License – Use on up to 50 sites</li>
</ul>
Pro licenses are validated against the THiS SEO license server at thissitechecker.com. No data other than your license key and site URL is transmitted. See our <a href="https://thissitechecker.com/privacy-policy/" rel="nofollow ugc">privacy policy</a> for details.
<h4>Why THiS SEO?</h4>
Most SEO plugins try to do everything. THiS SEO does what matters. It’s built for people who want:
<ul>
<li>A clean meta editor that doesn’t require opening every post</li>
<li>Schema that actually works without a PhD in structured data</li>
<li>Redirects that are fast and don’t slow down your site</li>
<li>Security that keeps settings safe without a full user roles system</li>
</ul>
Built by <a href="https://thissitechecker.com/" rel="nofollow ugc">ThisSiteChecker</a> – a small team from Norway making free SEO tools for DIY website creators.
<h3>External Services</h3>
This plugin connects to the following external services under the conditions described below.
<h4>Google Sitemap Ping</h4>
When a post or page is published or deleted, the plugin can notify Google that your sitemap has been updated. This feature is optional and must be enabled in Settings → Security → Sitemap Configuration.
<ul>
<li>What is sent: Your sitemap URL (e.g. https://yoursite.com/sitemap.xml). No personal data is transmitted.</li>
<li>When it is sent: Only when a post or page is published or deleted, and only if you have enabled “Ping Google” in sitemap settings.</li>
<li>Who receives it: Google LLC.</li>
<li>Google Terms of Service: https://policies.google.com/terms</li>
<li>Google Privacy Policy: https://policies.google.com/privacy</li>
</ul>
<h4>Bing Sitemap Ping</h4>
When a post or page is published or deleted, the plugin can notify Bing that your sitemap has been updated. This feature is optional and must be enabled in Settings → Security → Sitemap Configuration.
<ul>
<li>What is sent: Your sitemap URL (e.g. https://yoursite.com/sitemap.xml). No personal data is transmitted.</li>
<li>When it is sent: Only when a post or page is published or deleted, and only if you have enabled “Ping Bing” in sitemap settings.</li>
<li>Who receives it: Microsoft Corporation (Bing).</li>
<li>Microsoft Terms of Service: https://www.microsoft.com/en-us/servicesagreement</li>
<li>Microsoft Privacy Policy: https://privacy.microsoft.com/en-us/privacystatement</li>
</ul>
<h4>Cloudflare API (Pro only)</h4>
This plugin optionally connects to the following external services:
<h4>Cloudflare API (Pro only)</h4>
THiS SEO Pro includes an optional Cloudflare integration that purges cached copies of your sitemap and robots.txt when they are saved or changed.
<ul>
<li>What is sent: Your Cloudflare Zone ID and a list of URLs to purge (sitemap URL and robots.txt URL). Your encrypted API token is sent as an authorisation header.</li>
<li>When it is sent: Only when you manually trigger a cache purge, or when you save sitemap/robots.txt settings with auto-purge enabled.</li>
<li>Who receives it: Cloudflare, Inc. No data is sent unless you actively configure a Cloudflare API token in Pro settings.</li>
<li>Cloudflare Terms of Service: https://www.cloudflare.com/terms/</li>
<li>Cloudflare Privacy Policy: https://www.cloudflare.com/privacypolicy/</li>
</ul>
<h4>THiS SEO License Server</h4>
Pro license validation connects to the THiS SEO license server at thissitechecker.com.
<ul>
<li>What is sent: Your license key and your site’s domain name.</li>
<li>When it is sent: When you activate or deactivate a Pro license in the plugin settings.</li>
<li>Who receives it: Adventor AS, operator of thissitechecker.com.</li>
<li>Privacy Policy: https://thissitechecker.com/privacy-policy/</li>
<li>Terms of Service: https://thissitechecker.com/terms/</li>
</ul>
No data is sent to any external service for users of the free version. Cloudflare integration is only available in Pro.

THiS SEO

SEO plugin for WordPress professionals and agencies. No ads, no green lights. Just fast workflow tools that save time.

sh1zen

Flexy SEO is a flexible WordPress SEO plugin for managing the technical SEO signals that search engines and social networks read from your site.
Use it to create dynamic SEO titles, meta descriptions, canonical URLs, robots directives, schema.org structured data, Open Graph metadata, Twitter Cards, XML sitemaps, redirects, 404 monitoring and breadcrumbs from one modular control panel.
The plugin is built for site owners, developers and agencies who want practical SEO tools without account lock-in, external tracking or a required subscription.
<h4>Main SEO features</h4>
<ul>
<li>SEO title and meta description templates for posts, pages, archives, taxonomies and custom post types.</li>
<li>Dynamic replacement variables such as title, description, excerpt, site name, pagination, query vars and custom meta values.</li>
<li>Search snippet preview with title and description length counters.</li>
<li>Canonical URL output and index/follow controls.</li>
<li>Schema.org structured data for WebSite, WebPage, Article, NewsArticle, Organization, Person, BreadcrumbList and other supported graph types.</li>
<li>Knowledge Graph settings for organization data, logo, contact details and social profiles.</li>
<li>Open Graph metadata for Facebook and social sharing.</li>
<li>Twitter Card metadata with large image support.</li>
<li>XML sitemap at <code>sitemap.xml</code> with post type, taxonomy, priority and change frequency settings.</li>
<li>Search engine sitemap ping support for Google, Bing and custom endpoints.</li>
<li>Redirect manager for 301, 302 and 410 rules.</li>
<li>Automatic redirects when supported post or term URLs change.</li>
<li>404 monitor to review missing URLs and create redirects from the log.</li>
<li>SEO audit for titles, meta descriptions, image alt text, heavy images, image dimensions, noindex status and canonical availability.</li>
<li>Automatic missing image alt text generation using configurable templates.</li>
<li>Standard breadcrumbs and Flexed Breadcrumbs for custom breadcrumb structures.</li>
<li>Webmaster verification fields for Google, Bing, Yandex and Baidu.</li>
<li>Modular settings so unused SEO features can be disabled.</li>
</ul>
<h4>Why choose Flexy SEO?</h4>
Flexy SEO focuses on the essentials of technical SEO for WordPress: clean metadata, structured data, crawlable sitemaps, redirect handling and content checks.
<ul>
<li>Complete SEO toolkit: manage metadata, schema, social previews, sitemaps, redirects, 404s and breadcrumbs.</li>
<li>Flexible templates: build reusable SEO patterns for posts, pages, categories, archives and custom content types.</li>
<li>Developer friendly: supports custom post types, custom taxonomies and replacement variables for advanced WordPress setups.</li>
<li>Performance aware: modules can be enabled or disabled depending on the needs of the site.</li>
<li>Privacy friendly: Flexy SEO does not require an external account and does not collect or send site data.</li>
<li>Free plugin: no required email subscription and no paid account needed to use the included features.</li>
</ul>
<h4>Common use cases</h4>
<ul>
<li>Improve WordPress SEO metadata across posts, pages, products, listings, archives and categories.</li>
<li>Add schema markup and social sharing metadata without editing theme files.</li>
<li>Generate and manage an XML sitemap for search engines.</li>
<li>Find missing SEO titles, weak meta descriptions, image issues and canonical problems.</li>
<li>Monitor 404 errors and fix broken URLs with redirects.</li>
<li>Create breadcrumbs for themes that need a simple or custom breadcrumb structure.</li>
</ul>
<h4>Developer functions</h4>
Flexy SEO also exposes helper functions for theme developers, including:
<ul>
<li><code>wpfs_document_title()</code></li>
<li><code>wpfs_the_title()</code></li>
<li><code>wpfs_get_the_description()</code></li>
<li><code>wpfs_get_mainImageURL()</code></li>
<li><code>wpfs_get_post_excerpt()</code></li>
</ul>
<h4>Donations</h4>
Flexy SEO is free. If you want to support development, you can donate here: 
<a href="https://www.paypal.com/donate/?business=dev.sh1zen%40outlook.it&item_name=Thank+you+in+advance+for+the+kind+donations.+You+will+sustain+me+developing+FlexySEO.&currency_code=EUR" rel="nofollow ugc">https://www.paypal.com/donate/?business=dev.sh1zen%40outlook.it&item_name=Thank+you+in+advance+for+the+kind+donations.+You+will+sustain+me+developing+FlexySEO.&currency_code=EUR</a>

Flexy SEO

WordPress SEO plugin with meta tags, schema markup, XML sitemap, redirects, 404 monitor, SEO audit and breadcrumbs.

THiS SEO vs Flexy SEO