WordPress SEO Yoast RankMath SlimSEO 2025
Comparison of Slim SEO, Yoast SEO, and Rank Math — specifically for schema, automation, and overall SEO performance:
1. Schema Support
| Feature | Slim SEO | Yoast SEO | Rank Math |
|---|---|---|---|
| Built-in Schema Types | ✅ Basic + clean JSON-LD | ✅ Limited (unless Pro) | ✅✅ Extensive (free + Pro) |
| Custom Schema Editor | ❌ No | ❌ (Pro-only) | ✅ (Visual editor even free) |
| Auto-Generated Schema | ✅ Yes, no config needed | ✅ Yes, decent default | ✅✅ Yes, with deep controls |
| WooCommerce Schema | ❌ Not built-in | ❌ (Pro only) | ✅ Free |
| Schema Templates | ❌ None | ❌ Pro only | ✅ Free & Pro |
| Extendable by code | ✅ Yes (dev-friendly) | ✅ (filter-based) | ✅ (builder + hooks) |
Winner for Schema: Rank Math (even free version beats Yoast’s free limitations)
2. Automatic Settings / Ease of Use
| Feature | Slim SEO | Yoast SEO | Rank Math |
|---|---|---|---|
| One-click setup | ✅ Yes | ❌ (multi-step wizard) | ✅ Yes |
| Automatically handles: | |||
| – Meta tags | ✅ Yes | ✅ Yes | ✅ Yes |
| – Open Graph / Twitter | ✅ Yes | ✅ Yes | ✅ Yes |
| – Canonical URLs | ✅ Yes | ✅ Yes | ✅ Yes |
| – Sitemap | ✅ Yes | ✅ Yes | ✅ Yes (customizable) |
| – Robots.txt, .htaccess | ❌ No | ✅ (Pro) | ✅ (GUI editor) |
| – Breadcrumbs | ❌ No | ✅ Yes | ✅ Yes |
| Bloat / ads | ❌ None | ❌ Ads in free | ⚠️ Some nags, upsell |
Winner for Simplicity: Slim SEO
Winner for Control: Rank Math
3. SEO Features
| Feature | Slim SEO | Yoast SEO | Rank Math |
|---|---|---|---|
| Content Analysis | ❌ None | ✅ (basic free) | ✅ (strong free) |
| Focus Keyword | ❌ No | ✅ Yes (1 in free) | ✅ Yes (multiple) |
| Redirection Manager | ❌ No | ❌ Pro only | ✅ Free |
| 404 Monitor | ❌ No | ❌ Pro only | ✅ Free |
| Local SEO | ❌ No | ❌ Pro only | ✅ Free/Pro |
| WooCommerce SEO | ❌ No | ❌ Pro only | ✅ Free/Pro |
👉 Winner for Power Users: Rank Math
👉 Winner for Basic Sites: Slim SEO
Final Verdict
| Use Case | Best Choice |
|---|---|
| Max SEO power + schema | ✅ Rank Math |
| Simplicity, no bloat | ✅ Slim SEO |
| Classic, reliable, heavy | ✅ Yoast (Pro) |
My Take:
- Slim SEO is ideal if you want fast, no-fuss automatic SEO with minimal config.
- Rank Math is the power tool — even the free version crushes Yoast for schema and SEO depth.
- Yoast SEO feels increasingly outdated unless you pay for Pro — which still offers less than Rank Math Free.
