Blog / friday roundup
Yoast vs Rank Math on our servers
Two long-established WordPress SEO plugins, compared from what we actually see in databases, logs and support tickets on our shared hosting.
A question lands in our support queue most weeks: which SEO plugin should I use? We do not sell either one and we have no stake in the answer, but we do see both of them on hundreds of sites, and we see what they leave behind in the database and the logs. Here is the comparison as it looks from our side of the server, not from a feature table.
What both of them get right
Either plugin will handle the basics properly: editable titles and meta descriptions, canonical tags, Open Graph tags, noindex controls and an XML sitemap. Both are maintained by teams who have been at this for years and both ship security fixes quickly when something turns up. On a small business site, neither one will hold your rankings back. The choice is mostly about how much you want installed and how you prefer to work.
Database weight is the real difference
Yoast builds its own table to hold what it calls indexables, a precomputed row per URL. That table makes its own queries fast, and on a site with a few hundred pages it is unremarkable. On sites with tens of thousands of URLs, usually large stores or old news archives, we have watched that table and its rebuild become the heaviest thing in the database, and it is a common reason a site outgrows an entry-level hosting plan. Rank Math spreads its data across post meta instead, which keeps the table count down but makes a messy postmeta table messier.
Sitemaps behave differently under load
Both plugins generate their sitemap index on request and cache it. The practical difference shows up on large sites: a cold sitemap request can take long enough to time out, and we see that with either plugin. If your sitemap is slow or empty, the fix is almost never the plugin, it is the number of URLs you are asking it to list. We wrote about which URLs belong in a sitemap in XML sitemaps for small sites.
Redirects and 404 logging
Rank Math includes a redirect manager and a 404 monitor in the free plugin. Yoast keeps its redirect manager in the paid add-on. That single difference explains a lot of the installs we see: site owners who moved a site and needed redirects reached for the plugin that gave them redirects without a purchase. Worth knowing that a 404 monitor writes a database row for every miss, so on a site getting hammered by bots we have seen that log grow to hundreds of megabytes. Turn it off once you have finished your cleanup.
Modules you can switch off
Rank Math is built as a set of modules, and you can disable the ones you are not using from its dashboard. We like that. On a small brochure site we will usually turn off the 404 monitor, the redirection module if there is nothing to redirect, and the analytics integration. Yoast has fewer moving parts to begin with, which amounts to the same thing by a different route.
Schema markup
Both write JSON-LD structured data and both let you pick a type per page. Rank Math exposes more of it in the interface, with templates and custom fields, which is genuinely useful if you are marking up a lot of products or local listings. Yoast's output is more opinionated and harder to break. For most small sites, the plugin's defaults plus the right page type is as far as you need to go.
The mistake we see most: running both
Every month or two we open a site with two SEO plugins active, usually because someone installed a second one to compare and never deactivated the first. The result is duplicate title and canonical tags in the page source, conflicting sitemap routes, and search results that look nothing like what either plugin was told to output. Pick one, deactivate and delete the other, then view the page source and confirm you have exactly one canonical tag.
Switching between them
Both ship an importer that reads the other plugin's titles, descriptions and noindex settings, and in our experience it works on the vast majority of posts. The parts that do not travel cleanly are redirects, custom schema and anything you set through a theme or a page builder's own SEO fields. Take a backup first, run the import, then spot check twenty or thirty of your most important URLs before you delete the old plugin. Leaving both installed while you check is the one case where having two is fine, as long as only one is active.
Which one we would pick
For a straightforward small business site with a handful of pages and a blog, we would install Yoast and leave it alone, because there is less to configure and less to get wrong. For a site that needs redirects, heavy schema or local listings without a paid add-on, Rank Math earns the extra surface area, provided you turn off the modules you do not use. On a large catalogue we would test whichever one you choose against your own database rather than trusting anyone's benchmark, including ours. If redirects are what pushed you into this decision in the first place, our guide to redirects covers doing them at the server level instead.
Either plugin runs fine on our shared plans. If a sitemap is timing out, a 404 log has filled your disk quota, or you are simply not sure which of the two is installed, open a ticket with our support team and we will look at the actual queries rather than guessing.