Why We Left WordPress for Next.js (And Didn't Look Back)

Eighteen months ago we ran most of our client sites on WordPress. Today, none of them do. Fourteen migrations later, here is the honest story — what broke, what got faster, and why we are not going back.

The breaking point: a client lost $40,000 in a weekend

A B2B client based in Morristown ran a WordPress site with 38 plugins. On a Friday night, an automatic plugin update collided with their booking widget. The site looked fine. Forms silently dropped to a hosting log nobody read. By Monday morning, 11 qualified leads — about $40,000 in pipeline — were gone.

That was not a WordPress flaw. WordPress is a perfectly capable CMS. The flaw was the plugin tax: every site we ran had between 25 and 50 plugins, each one a moving part with its own update cadence, security profile, and ability to break things at 11 p.m. on a Sunday.

Three things WordPress could not give us anymore

1. Speed that survives the homepage

The average WordPress site we audited was shipping 1.8 to 3.4 MB of JavaScript on the homepage alone. Lighthouse scores rarely cleared 60 on mobile. Largest Contentful Paint averaged 4.2 seconds. Google's threshold for "good" is 2.5.

Our Next.js sites ship 100-300 KB of JavaScript per page. LCP averages 1.4 seconds. Same content, same imagery, fraction of the payload — because Next.js renders the page on the server and only sends the JavaScript a page actually needs.

2. SEO that doesn't require a plugin to fix what the platform broke

Yoast, RankMath, All-in-One SEO — every WordPress site we ran needed one of them just to emit clean meta tags and structured data. With Next.js, schema markup, canonical tags, OpenGraph, and sitemap generation are part of the framework. Nothing to install. Nothing to update. Nothing that breaks when the underlying CMS upgrades.

3. Code you actually own

WordPress technically lets you export your data, but the value of a WordPress site is largely tied up in plugins, themes, and configurations that don't travel cleanly. With our Next.js builds, the entire site lives in a Git repository the client owns. They can read it, fork it, hand it to another developer. We hand over keys on day one.

What we use instead

The stack is intentionally boring: Next.js 15 + React 19 + TypeScript + Tailwind CSS on the frontend. Supabase Postgres for content and data. Vercel for hosting and the global CDN. Then Brandlism, our own growth platform, wired in for SEO, lead capture, and analytics.

Every tool above has documentation, a hireable talent pool, and a track record running production sites for companies bigger than ours. None of it is experimental.

What clients keep — and what they lose

The biggest fear during a migration is "will I still be able to write blog posts?" Yes. We build a CMS into every project. Clients log in, write, publish — the experience is the same as WordPress. The difference is that the published page is server-rendered, hits the CDN edge in milliseconds, and doesn't carry the weight of 47 plugins on the way down.

What clients lose: nothing they were using. About 60% of installed WordPress plugins on the sites we audited were either inactive, redundant, or doing something the modern web platform now handles natively. The remaining 40% — booking, forms, analytics, e-commerce — we replaced with first-party tools that we maintain.

The migration playbook

1. Audit. We crawl the existing site, inventory every page, every form, every redirect, and every plugin doing real work.
2. Content port. Posts, pages, images, metadata — exported from WordPress, transformed, loaded into the new CMS.
3. SEO preservation. Every URL gets a 301 redirect. Schema is rebuilt. Internal linking is preserved. Google notices no disruption.
4. Design upgrade. Most sites get a real refresh during migration — not because we want to charge more, but because the original design was usually a Squarespace template the founder bought in 2019.
5. Cutover. DNS flip happens off-hours. Old site stays live and accessible until we are sure nothing was missed.

Average timeline: 4 to 6 weeks. Average performance gain: 2-3x faster page loads and a 20-40 point bump in Lighthouse scores.

Should you migrate?

If your WordPress site is fast, stable, and converting well — keep it. We are not on a crusade. But if you are reading this because something is going wrong — slow load times, plugin conflicts, security alerts, conversion rates that won't budge — the platform may be the bottleneck.

For a longer breakdown of cost, ROI, and timing differences, see our custom website vs template comparison. For a free 15-minute conversation about your specific site, book a call.