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.

McCrossen Marketing

McCrossenSEO™ handles all standard on-page SEO requirements out of the box — meta titles and descriptions, robots meta, canonical URLs, Open Graph, Twitter/X cards, JSON-LD schema markup, XML sitemap generation, redirect management, and bulk editing.
Free features (no account required):
<ul>
<li>Meta title and description management per post, page, and custom post type</li>
<li>Character count indicators (60 for titles, 160 for descriptions)</li>
<li>Global title pattern with configurable separator</li>
<li>Robots meta controls (noindex, nofollow, max-snippet, max-image-preview, max-video-preview)</li>
<li>Canonical URL management with paginated content support</li>
<li>Open Graph meta (title, description, image) with fallback chain</li>
<li>Twitter/X Card meta with card type selector</li>
<li>JSON-LD schema markup (Article, WebPage, BreadcrumbList, Organization, LocalBusiness)</li>
<li>XML sitemap with configurable post types and automatic noindex exclusion</li>
<li>Redirect manager (301, 302, 307)</li>
<li>Bulk editor for titles and descriptions across all content</li>
<li>Internal link suggestions</li>
<li>Import from Yoast, RankMath, AIOSEO, and SEOPress (one-click migration)</li>
<li>Analytics and tracking code injection (GA4, GTM, Facebook Pixel) — only loads when administrator configures IDs</li>
<li>Site verification codes (Google Search Console, Bing Webmaster)</li>
<li>robots.txt editor</li>
<li>Diagnostics panel with rate-limited automatic error reporting</li>
</ul>
Optional connected features (requires McCrossen Marketing account):
<ul>
<li>URL Optimization scoring across 59 ranking signals</li>
<li>AI-powered SEO recommendations</li>
<li>One-click Plugin Bridge: apply meta titles, descriptions, headings, alt text, and schema changes directly from the platform to your WordPress site</li>
<li>Platform-pushed llms.txt with audit-score-weighted content</li>
</ul>
The free version is fully functional as a standalone SEO plugin. No account or external connection is required for free-tier features.
<h3>External Services</h3>
This plugin connects to external services depending on which features the site administrator enables. The plugin makes zero external connections by default. All listed services activate only after explicit administrator configuration or connection.
<h4>McCrossen Marketing Platform</h4>
When: Only when the site is connected via the “Connect to McCrossen” button under McCrossenSEO™ > Connect2McCrossen. 
What is sent: Site URL, WordPress version, PHP version, plugin version, account identifier, and installed McCrossen plugin list. (The plugin also sends sanitized error reports rate-limited to one per error type per hour, even when not connected, to surface plugin-specific issues to the maintainer. This can be disabled by deactivating the plugin.) 
Why: Authenticated delivery of platform-generated SEO recommendations, audit data, and (where the account permits) llms.txt content. 
Service URL: https://mccrossenmarketing.com 
Privacy Policy: https://mccrossenmarketing.com/privacy-policy/ 
Terms of Service: https://mccrossenmarketing.com/terms-of-service/
<h4>Google Analytics 4</h4>
When: Only when an administrator configures a GA4 Measurement ID under McCrossenSEO™ → Tracking & Verification. 
What is loaded: The <code>gtag.js</code> script from <code>https://www.googletagmanager.com/gtag/js</code>. 
Where: Site frontend, in <code><head></code> for site visitors, only on installs that have configured a GA4 Measurement ID. 
Service: Google Analytics — https://policies.google.com/privacy and https://www.google.com/analytics/terms/
<h4>Google Tag Manager</h4>
When: Only when an administrator configures a GTM Container ID under McCrossenSEO™ → Tracking & Verification. 
What is loaded: The GTM script from <code>https://www.googletagmanager.com/gtm.js</code>, and a <code><noscript></code> iframe fallback to <code>https://www.googletagmanager.com/ns.html</code>. 
Where: Site frontend, only on installs that have configured a GTM Container ID. 
Service: Google Tag Manager — https://policies.google.com/privacy and https://www.google.com/analytics/terms/tag-manager/
<h4>Meta (Facebook) Pixel</h4>
When: Only when an administrator configures a Facebook Pixel ID under McCrossenSEO™ → Tracking & Verification. 
What is loaded: The pixel script from <code>https://connect.facebook.net/en_US/fbevents.js</code> and a tracking image from <code>https://www.facebook.com/tr</code>. 
Where: Site frontend, only on installs that have configured a Pixel ID. 
Service: Meta Platforms — https://www.facebook.com/policy.php and https://www.facebook.com/legal/terms/businesstools

McCrossenSEO

WordPress SEO plugin with meta management, schema markup, XML sitemap, Open Graph, redirect manager, and optional platform-powered optimization.

THiS SEO vs McCrossenSEO