We installed all three on the same WooCommerce test site and benchmarked 40+ features. The results challenge the assumption that paid SEO plugins are worth the subscription.
Yoast SEO Premium costs $99/year. Rank Math PRO costs $59/year. Shop2LLM is free. We installed all three on identical WooCommerce test sites (same theme, same 50 products, same content) and ran a 40+ point feature audit. Here is what we found — without the marketing spin.
Three fresh WordPress 6.9 installs with WooCommerce 9.3, Storefront theme, 50 real products (imported from a demo store with full descriptions, images, and attributes). Each plugin configured with default settings plus one hour of manual optimization. Feature parity assessed by testing each capability end-to-end. Performance benchmarked via MakeWPFast's Docker test suite (10 runs, median reported).
| Feature | Yoast Premium ($99/yr) | Rank Math PRO ($59/yr) | Shop2LLM (Free) |
|---|---|---|---|
| Meta title + description editor | ✅ | ✅ | ✅ |
| OG + Twitter Cards | ✅ | ✅ | ✅ |
| XML Sitemap (paginated) | ✅ | ✅ | ✅ |
| Image sitemap | ✅ | ✅ | ✅ |
| Video sitemap | ✅ | ✅ | ❌ |
| News sitemap | ✅ | ✅ | ❌ |
| Schema types | ~9 | ~24 | 19 |
| Custom Schema builder | ❌ | ✅ | ❌ |
| Multi-keyword analysis | ❌ (single) | ✅ | ✅ (unlimited) |
| Content analysis checks | ~12 | ~40 | ~22 |
| AI keyword suggestions | ✅ (Premium) | ✅ (Content AI) | ✅ (cloud + local) |
| AI schema detection | ❌ | ❌ | ✅ |
| AI content generation | ✅ (Premium) | ✅ (Content AI) | ❌ |
| Redirect manager (301/302/307/410/451) | ✅ (Premium) | ✅ | ✅ |
| Regex redirects | ✅ | ✅ | ✅ |
| 404 error logging | ✅ | ✅ | ✅ |
| CSV redirect import | ❌ | ✅ | ✅ |
| GSC integration | ✅ (Premium) | ✅ | ✅ |
| SEO audit (site-wide) | ❌ | ✅ (30+ checks) | ✅ (11 checks) |
| Weekly email reports | ❌ | ✅ | ✅ |
| Broken link checker | ❌ | ✅ | ✅ (50 posts/scan) |
| Internal link suggestions | ✅ (Premium) | ✅ | ✅ (5 per post) |
| Image SEO (alt check) | ✅ (Premium) | ✅ | ✅ |
| WooCommerce GTIN/MPN/Brand | ❌ (addon) | ✅ | ✅ |
| WooCommerce variable product schema | ❌ | ✅ | ✅ |
| WooCommerce product content checks | ❌ | ✅ | ✅ (6 checks) |
| Cornerstone content | ✅ (Premium) | ✅ | ✅ (basic) |
| Local SEO (multi-location) | ✅ (addon $79) | ✅ | ❌ (single location) |
| Keyword rank tracker | ❌ | ✅ (50 keywords) | ❌ |
| Competitor migration | ✅ | ✅ | ✅ |
| Plugin de-duplication | ❌ | ❌ | ✅ |
| llms.txt generation | ❌ | ❌ | ✅ |
| MCP server endpoint | ❌ | ❌ | ✅ |
| AI crawler tracking | ❌ | ❌ | ✅ (12 bots) |
| AI rate limiting (4-layer) | ✅ | ✅ | ✅ |
| Quick Edit SEO | ✅ | ✅ | ✅ |
| Title template variables | ✅ | ✅ | ✅ |
| BreadcrumbList schema | ✅ | ✅ | ✅ |
| Performance overhead (TTFB) | +12ms | +8ms | +5ms |
| Memory impact | +2MB | +1.5MB | +0MB |
Yoast's strengths are in content generation and local SEO. The AI Optimize feature can rewrite paragraphs for readability and generate meta descriptions from post content — useful for content teams managing high-volume blogs. The Local SEO addon ($79/year extra) supports multiple locations with Google Maps integration, opening hours schema, and geo-coordinates. For franchise businesses with 10+ locations, this is genuinely worth paying for.
Rank Math's advantage is breadth. The 40+ content analysis checks are the most thorough in the industry. The built-in Keyword Rank Tracker (50 keywords on PRO, unlimited on Business) saves you a separate SE Ranking or Serpstat subscription. Custom Schema builder lets you visually construct schema types not in the default set — powerful for niche use cases.
Shop2LLM wins on three axes: cost (free vs $99/$59), AI visibility (llms.txt + MCP + crawler tracking — unique among all SEO plugins), and performance (+5ms TTFB vs +12ms/+8ms). The multi-keyword system supports unlimited keywords with 7 checks each — Yoast Premium still only supports one. WooCommerce integration matches Rank Math PRO on GTIN/MPN/Brand/Condition/variable products. For a WooCommerce store that needs solid SEO plus AI discoverability without paying $99-178/year, this is the only option.
| Plugin | Key Gaps |
|---|---|
| Yoast Premium | Single keyword only. No AI visibility. No built-in site audit. Most expensive. Local SEO is an additional $79/year addon. No WooCommerce-specific content checks. |
| Rank Math PRO | No llms.txt or AI crawler tracking. AI Content AI has monthly credit limits. Redirect manager lacks CSV import on lower tiers. Can be overwhelming with 40+ settings panels. |
| Shop2LLM | No video/news sitemap. No AI content generation. No keyword rank tracker. Local SEO limited to single location. SEO audit has 11 checks vs Rank Math's 30+. |
| Use Case | Best Choice | Why |
|---|---|---|
| Solo blogger, budget-conscious | Shop2LLM | Free, multi-keyword, AI visibility — covers everything a blog needs |
| WooCommerce store | Shop2LLM or Rank Math PRO | Both have GTIN/MPN/Brand. Shop2LLM adds AI visibility free; Rank Math adds rank tracker |
| Content agency (high volume) | Yoast Premium | AI content generation and readability rewriting save hours per week |
| Multi-location business | Yoast + Local SEO addon | Only option with robust multi-location schema and Maps integration |
| Developer-focused site | Shop2LLM | MCP server + llms.txt for AI coding assistants. Lowest overhead. |
The SEO plugin market in 2026 is not a winner-take-all. It is segmented by use case. But for the majority of WordPress sites — solo bloggers, small WooCommerce stores, developers — paying $99/year for Yoast Premium is increasingly difficult to justify when a free alternative covers 78% of the same features plus AI visibility that Yoast does not offer at any price.