SiteSEO vs Slim SEO (September 2026)
Updated September 7, 2026 · Data from WordPress.org, refreshed daily · How this works
Both rank in the WordPress.org SEO Plugins top 10: SiteSEO at #6 and Slim SEO at #8. They split the 5 measures we track, so the choice comes down to which one you weigh most. Every number below comes straight from WordPress.org and is refreshed every day.
SiteSEO
SiteSEO – SEO Simplified
SiteSEO is an easy, fast and powerful SEO plugin for WordPress. Unlock your Website's potential and Maximize your online visibility with our SiteSEO!
Slim SEO
Slim SEO – AI SEO Plugin, Lightweight, Fast & Automated
An AI SEO plugin for WordPress that's lightweight and fast. Automatically generates meta tags, sitemaps, schemas and more with no bloat.
Who leads on what
They split the 5 measures we track, so the choice comes down to which one you weigh most.
SiteSEO ranks higher on WordPress.org: #6 against #8 in SEO Plugins.
SiteSEO has more users: 500,000+ active installs against 70,000+.
Not enough reviews to compare ratings fairly: SiteSEO has 9, Slim SEO has 136. We compare ratings only above 50 reviews each.
Slim SEO has more reviews behind its score: 136 against 9.
Slim SEO was updated more recently, on August 24, 2026; SiteSEO on August 14, 2026.
Which one to pick
Each plugin is the better answer for the measure it actually leads on. Nothing here is a recommendation we invented.
SiteSEO
Pick SiteSEO if you go by where WordPress.org itself puts them or you want the plugin more sites already run.
Slim SEO
Pick Slim SEO if you want the score backed by more reviews or you want the one shipping releases most recently.
SiteSEO vs Slim SEO side by side
| SiteSEO | Slim SEO | |
|---|---|---|
| SEO Plugins ranking | #6 | #8 |
| Rating | 4.0 | 4.7 |
| Reviews | 9 | 136 |
| Active installs | 500,000+ | 70,000+ |
| Total downloads | 1,777,283 | 2,133,444 |
| Downloads, last 30 days | – | – |
| Last updated | Aug 14, 2026 | Aug 24, 2026 |
| First published | Dec 29, 2023 | Dec 31, 2018 |
| Tested up to WordPress | 7.1 | 7.1 |
| Requires PHP | 7.2 | 7.4 |
| Pricing | Free on WordPress.org | Free on WordPress.org |
30-day download figures appear after both plugins have 30 days of tracking.
SiteSEO ratings
Slim SEO ratings
How we compare these two
Every figure here is pulled from the WordPress.org plugin API every day at 03:00 UTC, for both plugins in the same run, so the two are always read on the same day. We compare only what the directory reports: active installs, the rating and how many reviews stand behind it, the last release date and, once we have a month of history, downloads over the last 30 days. Ratings are only called a win above 50 reviews each, because a handful of five-star reviews is not evidence. Nothing is weighted into an overall score, no measure is worth more than another, and neither SiteSEO nor Slim SEO can pay to appear here: the pair exists only because both plugins reached the SEO Plugins top 10. Full methodology.
SiteSEO vs Slim SEO: common questions
Is SiteSEO better than Slim SEO?
They split the 5 measures we track, so the choice comes down to which one you weigh most. Neither is better at everything, and the answer depends on which measure you weigh. SiteSEO ranks higher on WordPress.org: #6 against #8 in SEO Plugins.
Which has more users, SiteSEO or Slim SEO?
SiteSEO ranks higher on WordPress.org: #6 against #8 in SEO Plugins.
Which is rated higher, SiteSEO or Slim SEO?
SiteSEO has more users: 500,000+ active installs against 70,000+.
Are SiteSEO and Slim SEO free?
Both are free to install from WordPress.org. SiteSEO may also sell a paid version or add-ons. Slim SEO may also sell a paid version or add-ons.
Alternatives to SiteSEO and Slim SEO
Plugins that score close to both in the same WordPress.org rankings and tags.
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