How different are they, really?
They aren't really the same category of thing, which is where most of these comparisons go wrong. WordPress is a CMS, a content management system,
What a CMS is and it also renders your pages, on a server, on request, through a theme and however many plugins have accumulated.
Next.js is a framework you build a site with, and the usual output is static HTML generated ahead of time and served off a CDN, a content delivery network holding copies of your pages near your visitors.
What a CDN is
WordPress runs roughly two in every five websites, which makes it the default answer for most of the internet. W3Techs CMS usage Being the default isn't an argument for it or against it. It does mean the ecosystem around it is enormous, and that's genuinely both the appeal and the problem.
Is WordPress insecure?
WordPress core is maintained seriously by people who know what they're doing. The risk almost always lives somewhere else. Patchstack's 2026 review of the ecosystem counted 11,334 new vulnerabilities disclosed during 2025, up 42% on the year before, and 91% of them were in plugins with 9% in themes. State of WordPress Security The core isn't what's getting people.
The number from that report that should actually change how you behave is a different one though. Roughly a third of disclosed vulnerabilities had no patch available at the moment they were made public. So the standard advice about keeping everything updated, which really is the single most effective control you have, ASD small business guide doesn't cover you for that window. The real mitigation is running fewer plugins in the first place, because every one you install is a supply chain you haven't audited and aren't going to.
Where does the speed difference come from?
Mostly from when the work happens. A statically generated page did all its work at build time and arrives as a file. A conventional WordPress page does the work per request, so it boots PHP, queries the database, runs the theme, runs the plugin hooks, assembles the HTML and then sends it. Caching hides a lot of that, and a well-tuned WordPress site on good hosting genuinely is fast. It's just fast because somebody made it fast, not because it started there.
What matters in the end is whether you land inside the thresholds. Largest Contentful Paint under 2.5 seconds,
Interaction to Next Paint under 200 milliseconds,
Cumulative Layout Shift under 0.1, at the 75th percentile of real visits.
Core Web Vitals Both stacks can pass. One of them just starts a lot closer to the line.
So when should you stay on WordPress?
When you have a site that works, somebody who maintains it, and no problem that the platform is causing. Rebuilding a functioning website because the technology underneath it has gone out of fashion is a bad trade, and I have talked people out of it. Migrations cost money, eat attention, and put your search performance at risk while the redirects settle.
It's also the right answer when you need something the plugin ecosystem already solves properly and you would otherwise be paying to rebuild it from nothing. Memberships, forums, complicated storefronts. There's no prize for building that yourself.
And when is it worth moving?
When maintenance has quietly become the product. If your year involves plugin conflicts, a builder that fights you, a site that got slower every time somebody added a feature, and an annual bill for tools that mostly exist to patch over the last set of tools, then you're paying for that platform in time even if the licences look cheap.
If you do move, treat the redirects as the actual project rather than the last item on the list. Every old URL needs to land on its closest new equivalent with a permanent redirect, or you throw away whatever search position you had built up. Redirects and site moves That's the part people skip, and then the rebuild gets the blame.
Will I still be able to edit my own site?
Yes. A headless CMS gives you the editing without the rendering, so you still change your own copy and images, the pages just get built rather than assembled on every request.
Is a migration going to hurt my rankings?
It can, and the redirects are why. Map every old URL to its closest new one with a permanent redirect and you generally hold position. Redirects and site moves Skip that step and you will lose it.
How many plugins is too many?
Fewer than you have. Every one is code you didn't write and can't audit, and 91% of the ecosystem's disclosed vulnerabilities last year were in plugins. State of WordPress Security