Key Takeaways
- Next.js is not automatically faster than WordPress. Either platform can be quick or slow depending on design, hosting, caching, code, content and third-party services.
- In our bounded mobile Lighthouse test, the confirmed Next.js page produced a median performance score of 87 and median Largest Contentful Paint of 3.98 seconds. The confirmed WordPress page produced 69 and 7.74 seconds respectively.
- This was not a controlled platform experiment. The pages serve different purposes and contain different content, so the result describes those two pages under one lab setup, not every Next.js and WordPress website.
- Lighthouse does not measure field Interaction to Next Paint in this test. Core Web Vitals should be judged with real-user field data where it is available.
- Choose the platform around editing, integrations, ownership, skills and total maintenance as well as speed. Then set and test a performance budget.
Is Next.js faster than WordPress? It can be, but the platform name is not a performance result.
Next.js gives developers useful tools for server rendering, static output, code splitting, images, fonts and caching. WordPress can also deliver fast pages with good hosting, page caching, a lean theme, controlled plugins and properly prepared media. Both can become slow when a project ships oversized images, excessive JavaScript, marketing tags or expensive server work.
Rather than repeat a broad claim, we ran a small, documented comparison. The results are useful as an example of how two real pages behaved in one test environment. They cannot isolate the effect of the platform.
The Short Answer
The tested Next.js page was faster in this bounded set of Lighthouse runs. That does not prove Next.js is inherently faster than WordPress.
The two pages were not equivalent. They had different designs, content, scripts, hosting and traffic conditions. A fair scientific platform test would require the same page, assets, functionality, location, server conditions and optimisation effort implemented on both systems. Even that would only represent the chosen implementations.
Use the numbers below to understand the method and limitations, not as a promise for your next website.
How the Test Was Run
We tested two public pages that clearly expose their technology in delivered source:
- https://nextjs.org, the official Next.js website;
- https://wordpress.org/news/, the official WordPress News page, which delivers WordPress assets.
The test was run on 22 July 2026 with Lighthouse 13.4.1 from the command line. We used Lighthouse's default mobile configuration, simulated throttling and a headless Chrome session. Each URL was tested three times. The figures below are the median of those three consecutive runs, which reduces the influence of one unusually fast or slow result without pretending to remove normal variability.
| Metric | Confirmed Next.js page | Confirmed WordPress page |
|---|---|---|
| Lighthouse performance score | 87 | 69 |
| First Contentful Paint | 1.38 s | 2.83 s |
| Largest Contentful Paint | 3.98 s | 7.74 s |
| Cumulative Layout Shift | 0.000 | 0.000 |
| Total Blocking Time | 20 ms | 99 ms |
The individual Next.js performance scores were 81, 93 and 87. Its LCP results were 4.44, 3.18 and 3.98 seconds. The WordPress scores were 69, 69 and 69, with LCP results of 8.42, 7.65 and 7.74 seconds. Showing the spread matters because a single test can look more certain than it is. The six raw Lighthouse JSON reports and test notes are retained with this content batch so the figures can be checked rather than taken on trust.
Chrome's Lighthouse performance scoring documentation explains that the score can fluctuate due to traffic routing, test devices, page changes and other underlying conditions. It also explains that the overall score is a weighted calculation rather than a direct load time.
Why This Is Not a Core Web Vitals Verdict
Core Web Vitals are based on real user experience. Lighthouse provides controlled lab data. The two are related, but they do not answer exactly the same question.
Google's explanation of why lab and field data can differ notes that field data includes real devices, networks, locations and behaviour, while a lab run limits those variables. Field tools normally assess Core Web Vitals at the 75th percentile across a period of visits.
This test recorded a lab LCP and CLS. It did not produce a field Interaction to Next Paint result because INP needs real interactions across visits. Lighthouse's Total Blocking Time is a useful diagnostic metric, but it is not interchangeable with INP.
There may also be insufficient public field data for a particular page or origin. When it is available, review Search Console's Core Web Vitals report, PageSpeed Insights field data or your own real-user monitoring alongside lab tests. Our guide to improving Lighthouse scores without chasing a meaningless 100 explains how to use the tools in context.
What Gives Next.js a Strong Performance Starting Point?
Current Next.js production guidance describes several built-in approaches that can support performance:
- Server Components can render without adding their code to the client JavaScript bundle.
- Route-based code splitting limits what each page initially needs.
- Static rendering and caching can avoid repeated server work for public content.
- the Image component can resize images, serve modern formats and reserve layout space;
- the Font module self-hosts and optimises fonts;
- the Script component helps control third-party loading.
The official Next.js production checklist also warns developers to review client boundaries, data caching, bundle size and Core Web Vitals. The existence of a feature does not mean a project uses it well.
A Next.js site can still ship a large client bundle, fetch data through unnecessary layers, disable useful caching or load several third-party widgets. A highly animated marketing page may be slower than a simple WordPress article even when its architecture is technically modern.
Next.js also changes the operational model. The team needs JavaScript and React skills, a build and deployment process, monitoring and a planned editing interface. If a content team loses the ability to publish safely, a faster front end has not solved the whole business problem.
Our WordPress to Next.js migration service is therefore scoped around content, URLs, editing and integrations as well as rendering speed. The related WordPress to Next.js rebuild guide covers the migration decisions in more detail.
What Makes a WordPress Site Fast or Slow?
WordPress generates pages through PHP and a database, but full-page caching can serve many public visits without rebuilding the page on every request. A content delivery network, current PHP version, suitable database, optimised media and lean theme can make a substantial difference.
The official WordPress performance optimisation handbook identifies hosting, configuration, software versions, themes, plugins and image sizes as performance factors. It recommends caching as an important early improvement and advises testing rather than guessing.
Common WordPress problems include:
- a visual builder that loads a broad asset set on every page;
- several plugins solving overlapping jobs;
- uncached database queries or slow external requests;
- large original images displayed at small dimensions;
- fonts, sliders, pop-ups and trackers added without a budget;
- cheap hosting that struggles under normal administration or traffic;
- an old theme that makes safe updates difficult.
Those are implementation and maintenance problems, not proof that every WordPress website is slow. A bespoke lean theme with page caching may outperform a poorly built Next.js application.
If the current site is valuable but sluggish, compare a rebuild with WordPress development and focused website speed optimisation. Our article asking whether a WordPress rebuild is worth it gives a practical way to make that choice.
Compare the Same Business Journey
Do not compare your home page with a framework documentation site and call it procurement evidence. Test the templates and journeys your business actually depends on:
- home and priority service pages;
- a representative article;
- product, category and search pages;
- basket and checkout;
- account or member areas;
- forms with validation;
- pages carrying consent, chat or advertising tools.
Record the device and network profile, test location, tool version, URL, time and whether the cache was warm. Run more than once. Keep screenshots or exported reports so changes can be compared later.
Set budgets for image weight, client JavaScript and third-party scripts. Agree who can add a new tag or plugin after launch. Many performance problems arrive through ordinary marketing and editorial changes rather than the original build.
A website audit and consultation can establish this baseline before a platform decision. It is often cheaper to identify the actual bottleneck than to rebuild on the assumption that the CMS name is responsible.
Speed, SEO and Conversion Are Related but Different
A quicker page removes friction, but it does not make a weak offer relevant. Google says its systems use Core Web Vitals and other page-experience signals, while also prioritising helpful, relevant content. A better score cannot guarantee a ranking.
Similarly, a fast page with unclear pricing, weak proof or a broken enquiry route will not become commercially effective through milliseconds alone. Measure leads, sales and task completion alongside technical metrics.
Protect search foundations during any rebuild: preserve useful content, map changed URLs, use relevant permanent redirects, test canonical tags and sitemaps, and monitor Search Console after launch. A platform migration creates more risk than a performance plugin change, so the evidence should justify it.
When Next.js Is Likely to Be the Better Fit
Next.js may suit a business when:
- the website needs a bespoke application-like experience;
- the team has reliable React and deployment skills;
- content comes from several systems or a headless CMS;
- there are clear benefits from static rendering, streaming or server components;
- the business accepts a developer-led maintenance model;
- the current platform genuinely limits performance or integration work.
It is not automatically the right choice for a small brochure site that a non-technical team updates daily. The simplest maintainable system that meets the requirements is often the stronger decision.
When WordPress Is Likely to Be the Better Fit
WordPress may suit a business when:
- editors need a familiar integrated publishing system;
- the required features are well served by maintained themes and extensions;
- the team has dependable WordPress support;
- content workflows matter more than application-style interaction;
- budget and timescale favour improving an existing installation;
- the current performance faults can be fixed without migration.
WordPress still needs ownership. Plugins, PHP, themes, backups and security require updates and testing. “Easy to edit” should not mean “anyone can install anything in production.”
Frequently Asked Questions
Is Next.js always faster than WordPress?
No. Next.js provides strong performance tools, but results depend on implementation, content, hosting and third-party scripts. A well-optimised WordPress site can be faster than a poorly built Next.js site.
What did your Next.js and WordPress test show?
Across three mobile Lighthouse runs on 22 July 2026, the tested Next.js page had a median score of 87 and LCP of 3.98 seconds. The tested WordPress page had 69 and 7.74 seconds. The pages were not equivalent, so this is illustrative rather than a platform verdict.
Does Lighthouse measure all Core Web Vitals?
No. Lighthouse provides lab measurements including LCP and CLS, plus diagnostic metrics such as Total Blocking Time. Field INP requires real user interactions and should be reviewed through field data when available.
Should I rebuild a slow WordPress site in Next.js?
Only after identifying the causes and comparing the full cost and risk. Hosting, caching, images, themes, plugins or scripts may be fixable without migration. A rebuild makes sense when wider requirements justify it.
Is Next.js better for SEO than WordPress?
Neither platform guarantees SEO performance. Both can provide crawlable HTML, metadata, sitemaps, structured data and fast pages when implemented properly. Content quality, site structure, links and technical maintenance remain important.
Test the Site You Need, Not the Platform Label
Our small comparison found the tested Next.js page faster than the tested WordPress page under one repeatable setup. The honest conclusion stops there. It does not turn two different pages into a universal rule.
If you are weighing a rebuild, contact MattDarm. We can audit the current bottlenecks, price the practical fixes and compare them with a properly scoped migration before you replace a system that may simply need better engineering.
