Why most Jacksonville business websites are slow, and how to fix yours
We tested the homepages of six Jacksonville-area web design agencies that rank on Google’s first page. The median mobile score was about 48 out of 100. Here is what slows sites down and what actually fixes it.
If web design agencies, the people who build websites for a living, struggle with speed on their own homepages, it is a safe bet that many local business sites do too. That is what we found when we ran a quick, informal test, and it is why speed is one of the first things we check when a Jacksonville business asks us to look at their site.
What we tested
On October 26, 2026, we ran the homepages of six Jacksonville-area web design agencies that appear on the first page of Google for local web design searches through Google PageSpeed Insights, using the mobile test. We are not naming them; the point is the pattern, not the companies. We also tested our own homepage three times the same way.
| Homepage | Mobile performance score |
|---|---|
| Agency A | 59 |
| Agency B | 56 |
| Agency C | 50 |
| Agency D | 46 |
| Agency E | 45 |
| Agency F | 21 |
| sociallybold.com | 94 (median of three runs) |
The six agency homepages had a median score of about 48. Their Largest Contentful Paint, which measures how long the main content takes to appear, ranged from 13.5 to 23.3 seconds in the test. Our homepage’s LCP ranged from 2.4 to 3.1 seconds across three runs, right around Google’s 2.5-second “good” threshold, so we have room to improve too.
A fair caveat: this is a small, single-day lab test, not a scientific study. PageSpeed scores vary from run to run, and the mobile test simulates a mid-range phone on a slower connection. Real visitors on fast Wi-Fi will see faster loads. But the lab test is a useful, consistent way to spot problems, and the gaps here are too large to be noise.
Core Web Vitals, briefly
Google measures real-world page experience with three Core Web Vitals. According to web.dev, a page passes when at least 75% of visits meet each “good” threshold:
- Largest Contentful Paint (LCP): how quickly the main content appears. Good is 2.5 seconds or less.
- Interaction to Next Paint (INP): how quickly the page responds when someone taps or clicks. Good is 200 milliseconds or less.
- Cumulative Layout Shift (CLS): how much the layout jumps around while loading. Good is 0.1 or less.
The PageSpeed score at the top of the report is a lab estimate. The “Discover what your real users are experiencing” section, when it appears, shows field data from real Chrome users, which is closer to what Google uses. Core Web Vitals are one of many signals Google considers, and relevant, helpful content still matters more. But a slow site loses visitors before they ever read that content, especially on phones.
Why speed matters more for local businesses
Think about how people actually find a local business. A homeowner in Arlington taps your website from the Google map results while standing in a flooded laundry room. A parent in Oakleaf looks you up between errands on a spotty cell signal. A property manager at the beach compares three vendors on a phone between meetings. None of them will wait twenty seconds for a homepage to appear; they will tap the next result.
Speed also affects paid traffic. Google Ads considers landing page experience when evaluating ads, so a slow page can make every click you pay for work less hard. And a fast site is usually a well-built site, with cleaner code that is easier for search engines, AI tools and assistive technology to read.
The seven most common causes, and their fixes
1. Oversized images
The most common culprit. A hero photo straight from a camera or stock site can be several megabytes, when a properly sized version would be a small fraction of that.
Fix: resize images to the largest size they are actually displayed, serve modern formats such as WebP or AVIF, use responsive image sizes for phones, and lazy-load images below the fold. Do not lazy-load the main hero image, because that delays LCP.
2. Heavy page builders and themes
Drag-and-drop builders and multipurpose themes make sites easy to assemble, but they often load large amounts of CSS and JavaScript for features a page never uses, and wrap content in many layers of extra markup.
Fix: on an existing site, turn off unused builder modules and enable the builder’s own performance settings. On a rebuild, a lean, custom theme usually outperforms a general-purpose one by a wide margin. We cover the trade-offs in WordPress vs Webflow vs custom.
3. Too many plugins and scripts
Every slider, popup, social feed, animation library and form plugin adds code. Many load on every page, even where they are not used.
Fix: audit plugins and remove what you do not need. Load scripts only on the pages that use them, and defer non-critical JavaScript so it does not block the page from appearing.
4. Render-blocking CSS and fonts
Browsers will not paint a page until they have downloaded the CSS in the page head. Large stylesheets and several web font files can hold the screen blank for seconds on a mobile connection.
Fix: inline the small amount of CSS needed for the top of the page, load the rest without blocking, limit font families and weights, self-host fonts where practical and use font-display: swap so text appears right away.
5. Cheap or overloaded hosting
If the server takes a long time to respond, everything else waits. Budget shared hosting can be slow, especially at busy times, and missing page caching makes it worse.
Fix: use quality hosting with server-side page caching, a current PHP version for WordPress sites and a CDN for static files. In PageSpeed Insights, look at the server response time (often called time to first byte) to see whether hosting is part of your problem. Our small business hosting and maintenance guide covers what to look for in a host.
6. Third-party tags and widgets
Chat widgets, review carousels, embedded videos, booking widgets, ad pixels and multiple analytics tools all load code from other companies’ servers. Each one adds requests you do not control and can hurt both LCP and INP.
Fix: keep only the tags you actually use, load chat and video embeds only when someone clicks them, and manage marketing tags through one tag manager with a regular cleanup.
7. Sliders, background video and heavy animation
Homepage sliders and autoplaying background videos look impressive in a design review, but they are expensive on a phone. They often delay the main content, shift the layout as they load and add scripts that keep running after the page appears.
Fix: replace sliders with one strong, well-optimized hero image and a clear headline. If video matters, show a lightweight poster image and load the video only when someone presses play.
A practical order of operations
- Test your three most important pages in PageSpeed Insights on mobile: usually the homepage, your top service page and your contact page.
- Find the LCP element. The report shows which element is the Largest Contentful Paint. It is often a hero image or a large heading. Make that element load first and fast.
- Fix images, which is usually the quickest big win.
- Remove or defer scripts you do not need on every page.
- Check server response time and caching.
- Retest two or three times and compare medians, since scores vary between runs.
- Watch field data in Google Search Console’s Core Web Vitals report over the following weeks.
For a deeper dive into the largest of the three metrics, web.dev’s guide to optimizing LCP is excellent.
Fix it or rebuild it?
Sometimes a focused cleanup gets a site into good shape. Other times the theme, builder and plugin stack are the problem, and every fix is fighting the foundation. If your site is also outdated, hard to edit or not bringing in leads, a rebuild may be the better investment. Our guide to signs your website needs a redesign can help you decide.
How we build fast sites
When we build websites for Jacksonville businesses, speed is part of the design brief, not an afterthought. We use lean custom themes instead of heavy multipurpose ones, size and compress every image, keep plugins to a minimum, load third-party tools only where they are needed and test on mobile before launch. Our own homepage is the example: a median mobile score of 94 in the same test the agencies above were run through.
Curious where your site stands? Request our free website speed and SEO report and we will show you what is slowing it down and which fixes matter most.
Frequently asked questions
What is a good PageSpeed Insights score?
Google labels 90 to 100 as good, 50 to 89 as needs improvement and below 50 as poor. The score is a lab estimate, so also check whether your pages pass Core Web Vitals in real-user field data.
Why is my mobile score so much lower than desktop?
The mobile test simulates a mid-range phone on a slower connection, so heavy images, scripts and fonts have a much bigger impact. Most of your local customers are likely visiting on phones, so the mobile result is the one to prioritize.
Does website speed affect Google rankings?
Core Web Vitals are one of many signals Google uses, and relevant content matters more. Speed has a bigger effect on whether visitors stay, read and contact you, which is reason enough to fix it.
Can a caching plugin fix a slow WordPress site?
Caching helps with server response time, but it cannot fix oversized images, heavy page builders or too many third-party scripts. Most slow sites need those addressed as well.