Author Website Speed and Performance: Why It Matters and How to Fix It

A slow website is a leaky bucket. You spend time and money on SEO, social media, and paid ads to bring readers to your author website — and then your website loads slowly enough that a meaningful percentage of those readers leave before it finishes loading. They don't see your book covers. They don't read your bio. They don't sign up for your email list. They bounce.

Research consistently shows that page load time is one of the most significant factors in visitor retention: a one-second delay in mobile page load time reduces conversions by up to 20%. For an author website that's already fighting for attention in a crowded market, that's a significant leak. Website speed also directly affects your Google search rankings through Core Web Vitals — Google's set of user experience metrics that influence where your pages appear in search results.

This guide covers what author website performance means, how to test it, and — most importantly — the specific improvements that make the biggest difference for each major website platform.

Core Web Vitals: What Google Measures

Core Web Vitals are a set of metrics Google uses to evaluate the user experience of a web page. They became a direct ranking factor in Google's algorithm in 2021, meaning pages that score poorly on these metrics rank lower than comparable pages that score well. The three Core Web Vitals are:

LCP: The Most Important for Author Websites

LCP measures how long it takes for the largest visible content element on the page to load — typically your hero image, your book cover, or your above-the-fold background image. For an author website, LCP is almost always the hero book cover or author photo. This is the most practically important Core Web Vital for authors because it directly measures how quickly the visual hook — the thing that makes a reader want to stay — becomes visible.

A poor LCP (over 4 seconds) means a reader who landed on your Home page waits 4+ seconds to see your book cover. Many won't wait that long.

CLS: The Layout Jump Problem

CLS measures how much the page content moves around while it loads. If your text loads first and then images pop in and shift everything down — so that a reader who started reading your bio suddenly finds their place displaced by a cover image that just appeared — that's CLS. It's disorienting, it interferes with reading, and Google penalizes it. The most common cause on author websites: images without defined dimensions in the HTML, and custom fonts that load and replace placeholder text.

Testing Your Website Speed

Google PageSpeed Insights

Google PageSpeed Insights (pagespeed.web.dev) is the primary tool for evaluating your website's Core Web Vitals performance. Enter your URL and it generates a performance score (0–100) for both mobile and desktop, along with specific diagnostics explaining what is causing poor performance and how to fix each issue.

The PageSpeed score to aim for: 75+ for mobile (green), 90+ for desktop (green). Most author websites score well on desktop and struggle on mobile because mobile testing simulates slower network conditions and less powerful devices. Prioritize your mobile score — a growing majority of readers will visit your website from their phone.

How to Test

• Go to pagespeed.web.dev

• Enter your website's URL

• Review the scores for both Mobile and Desktop (toggle between them)

• Scroll to the Diagnostics section — this shows specific issues causing slow performance, ranked by estimated impact

• Note the top three to five issues by impact — these are your priorities

ScribeCount Website Traffic: Performance Metrics

ScribeCount's Website Traffic feature captures basic page timing metrics as part of its first-party analytics data collection. This means your ScribeCount dashboard can show you actual real-user performance data from your author website visitors — not just the simulated test results from PageSpeed Insights. Real-user performance data reflects your actual audience's experience: their devices, their network speeds, their geographic locations. If ScribeCount's performance data shows elevated page load times for mobile visitors from Australia, that's a specific problem to investigate rather than a general score.

The Most Impactful Performance Fixes for Author Websites

Fix 1: Optimize Your Images (Biggest Single Impact)

Unoptimized images are the most common cause of slow author websites. A book cover exported from a design tool at full print resolution (10 MB+) uploaded directly to your website will be the primary cause of slow LCP on every page it appears on. Images should be:

• Resized to the maximum size they'll be displayed at — a book cover displayed at 400px wide on your Home page does not need to be uploaded at 2,400px wide

• Compressed to reduce file size without visible quality loss — JPEG compression at 70–80% quality produces files 60–80% smaller than uncompressed with no visible difference on screen

• Converted to modern formats — WebP format produces files 25–35% smaller than JPEG at equivalent quality; all modern browsers support WebP

• Served with explicit width and height attributes in the HTML — prevents CLS by reserving the image's space before it loads

For WordPress authors, the ShortPixel or Imagify plugins handle all of this automatically: they compress and convert images to WebP as they're uploaded, and retroactively process your existing image library. This single change can improve your PageSpeed score by 20–30 points on image-heavy author websites.

For Squarespace, Wix, and Shopify: these platforms handle some image optimization automatically, but you should still upload images at display size rather than full resolution. A 400px-wide cover display area does not benefit from a 2,400px wide original.

Fix 2: Use a Content Delivery Network (CDN)

A CDN stores copies of your website's static files (images, CSS, JavaScript) on servers around the world and serves them to each visitor from the nearest server location. A reader in Australia receives your book covers from an Australian CDN server rather than from your hosting server in the US — reducing the physical distance the data travels, which reduces load time.

• WordPress authors: Cloudflare's free plan is the simplest CDN option. Sign up at cloudflare.com, add your domain, and change your domain's nameservers to Cloudflare's. Cloudflare handles CDN, additional performance optimization, and security automatically.

• Squarespace: CDN is built in to Squarespace's infrastructure — no additional setup required.

• Wix: CDN is included in Wix's hosting infrastructure.

• Shopify: Shopify's hosting includes CDN for storefront assets.

Fix 3: Choose the Right Hosting (WordPress)

If you're on WordPress and your PageSpeed score is poor despite image optimization and CDN, your hosting may be the constraint. Shared hosting — where your website shares server resources with hundreds or thousands of other websites — has variable performance. Entry-level shared hosting plans from budget providers often produce consistently slow response times that no amount of optimization can fully compensate for.

For author websites expecting moderate traffic (under 10,000 visitors/month), managed WordPress hosting provides significantly better performance than basic shared hosting:

Fix 4: Minimize JavaScript and Plugin Load (WordPress)

Every plugin installed on a WordPress website adds JavaScript and CSS that loads with every page. A WordPress author website with 25 plugins — each reasonable in isolation — can have significantly more JavaScript loading than is necessary, slowing every page load.

• Audit your plugins: remove any that are deactivated or no longer serving a purpose

• Use a performance plugin: WP Rocket ($59/year) is the most effective WordPress performance plugin, handling JavaScript and CSS minification and deferral, lazy loading, database cleanup, and caching

• Check which plugins are loading JavaScript on every page: Query Monitor (free plugin) shows you what each plugin is loading

Fix 5: Lazy Loading for Images Below the Fold

Lazy loading delays loading images that are not immediately visible (below the fold) until the visitor scrolls to them. This improves LCP because the browser prioritizes loading the images that are actually visible, rather than loading all images on the page simultaneously. Modern browsers and modern website platforms support lazy loading natively or through their image handling settings. For WordPress, WP Rocket and most image optimization plugins enable this automatically.

Fix 6: Custom Font Loading Strategy

Custom fonts — Google Fonts, Adobe Fonts, or custom typefaces loaded from external servers — are a common cause of layout shift (CLS) and slow LCP. Each font file needs to be downloaded before the browser can render the text that uses it. Strategies to reduce font-related performance impact:

• Preload your most critical fonts using a <link rel='preload'> tag in your HTML header — tells the browser to start downloading the font immediately

• Limit your font choices: each weight (Regular, Bold, Italic) of each font family is a separate download. Two fonts in three weights each = six downloads.

• Use system fonts as fallbacks: specify font stacks that include system fonts (-apple-system, BlinkMacSystemFont, 'Segoe UI') so text renders immediately in a system font while your custom font loads

Platform-Specific Performance Notes

WordPress

WordPress has the highest performance ceiling (can be very fast) and the lowest performance floor (can be very slow). Shared hosting, too many plugins, unoptimized images, and no caching are the most common causes of slow WordPress author websites. Install WP Rocket and ShortPixel, switch to managed hosting if your scores are consistently poor, and evaluate your plugin count.

Squarespace

Squarespace manages hosting, CDN, and most performance optimization automatically. Performance issues on Squarespace are usually caused by: very large uploaded images, embedded video from external sources, or custom code blocks added to pages. Check PageSpeed on Squarespace sites and address large images first.

Wix

Wix has improved significantly in performance in recent years. Like Squarespace, it manages most infrastructure automatically. The main controllable performance factor on Wix is image size at upload. Wix's App Market apps can also add JavaScript weight — audit any apps you've installed that may not be serving a purpose.

Shopify

Shopify's core hosting is fast. Performance issues on Shopify author stores are typically caused by: too many installed apps (each adds JavaScript), heavy third-party fonts, or complex theme templates. For author stores using Lulu Direct or BookVault apps, check that these apps aren't loading excessive scripts on pages where they're not needed.

Performance Targets for Author Websites

Common Author Website Performance Mistakes

• Uploading book cover images at full print resolution (5–10 MB) rather than screen-optimized sizes (100–300 KB)

• Installing 20–30 WordPress plugins without auditing which are actually needed

• Using budget shared hosting for a WordPress site with any significant traffic

• Not testing mobile performance — desktop scores can be excellent while mobile scores are poor

• Loading custom fonts from 4–5 different families with multiple weights each

• Not enabling caching on WordPress — every page load re-generates the HTML from scratch rather than serving a cached version

Website performance is not a one-time fix — it's an ongoing part of your author website's maintenance. Check your PageSpeed score quarterly or after any major site changes. Install ScribeCount's website tracking to get real-user performance data alongside your traffic and conversion metrics. A fast, well-performing author website keeps more of the readers you work hard to attract — and earns better rankings from Google for every query your site appears in.

-Randall Wood