Landing Page Speed Checklist for Service Businesses

A landing page speed checklist for service businesses covers six main areas: image compression, font loading, render-blocking scripts, third-party tags, hosting/CDN setup, and Core Web Vitals baselines. Running these checks before you design or build saves you from shipping a beautiful page that loads too slowly to convert. Dee Agency includes speed as part of the Landing Page Design & Build process, but you can run most of this yourself before a single pixel gets designed.

Why speed belongs in your pre-build checklist

Speed isn’t a developer task you handle after launch. It’s a design constraint that should shape decisions before the first wireframe exists.

The fonts you choose affect load time. The hero video you want affects load time. The chat widget, the analytics stack, the embedded Calendly, the cookie banner, the retargeting pixel. Every addition has a cost, and those costs compound.

If you treat speed as a post-launch fix, you’ll be retrofitting constraints onto design decisions that already locked in the problem.

Google’s Core Web Vitals are the clearest public framework for what “fast enough” means. Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) are the three signals that matter most. Each one has a threshold that separates “good” from “needs improvement” from “poor.” Run your current page through PageSpeed Insights before you touch anything. That baseline tells you what you’re actually working with.

The landing page speed checklist for service businesses

This checklist is organized by category. Work through it before design starts, not after.

Images

Images are the single biggest speed problem on most landing pages. A hero image that hasn’t been resized or compressed can be several megabytes on its own.

• Compress all images before export. Use tools like Squoosh for manual compression or set up automated compression in your build pipeline.
• Convert images to WebP or AVIF. Both formats deliver significantly smaller file sizes than JPEG or PNG at comparable visual quality.
• Set explicit width and height attributes on all img elements. Missing dimensions cause layout shift (CLS), which tanks your Core Web Vitals score.
• Use responsive images with srcset so mobile devices don’t download desktop-sized assets.
• Lazy-load images below the fold. The hero image should load eagerly; everything else can wait.
• If you’re using a hero video, replace it with a static image on mobile. Video autoplay on mobile is slow and often blocked anyway.

Fonts

Custom fonts are a common source of invisible slowness. They block rendering if loaded wrong.

• Limit yourself to two font families maximum. Each additional family is another network request.
• Use font-display: swap in your CSS so text renders immediately in a fallback font while the custom font loads.
• Preload your primary font file using a <link rel="preload"> tag in the document head.
• Self-host fonts rather than loading them from Google Fonts or Adobe Typekit where possible. Third-party font requests add DNS lookup time.
• Subset your fonts. If you only use Latin characters, you don’t need the full Unicode range.

Render-blocking scripts

JavaScript that loads in the document head blocks the page from rendering until it’s done executing. Most service business landing pages have at least a few of these.

• Audit every script tag. Move non-critical scripts to the bottom of the body or add defer or async attributes.
• Defer analytics scripts. Google Analytics, Segment, and similar tools don’t need to run before your page paints.
• Defer chat widgets. Tools like Intercom or Drift are often several hundred kilobytes. Load them after the page is interactive.
• Inline critical CSS for above-the-fold content so the browser can render the hero without waiting for an external stylesheet.
• Minify all JavaScript and CSS files. Most modern build tools (Vite, Next.js, Astro) do this automatically, but verify it’s actually happening.

Third-party tags

This is where service business pages quietly bloat. Marketing tags, retargeting pixels, A/B testing tools, heatmap scripts, lead capture forms, embedded calendars. Each one adds weight and latency.

• List every third-party tag currently on the page. If you’re redesigning an existing page, use a tool like RequestMap to see everything that’s loading.
• Audit which tags are actually being used. Unused tags from old campaigns are common.
• Load third-party scripts conditionally or via a tag manager with proper triggers (fire on scroll, fire on interaction, not on page load).
• Replace embedded Calendly or Hubspot meeting widgets with a link that opens the tool in a new tab. Embedding those tools inline adds significant overhead.
• If you’re running a retargeting pixel, confirm it’s firing on the right events, not loading heavyweight SDK files on the initial page view.

Hosting and CDN setup

A fast page hosted on slow infrastructure is still a slow page. This is especially true for service businesses that set up hosting once and never revisit it.

• Use a CDN (Content Delivery Network) that serves assets from edge locations close to your visitors. Vercel, Netlify, and Cloudflare Pages all include this by default.
• Enable HTTP/2 or HTTP/3 on your server. Most modern hosting platforms do this automatically, but verify in browser DevTools.
• Enable Brotli compression (preferred) or Gzip compression for all text-based assets. This reduces transfer size for HTML, CSS, and JavaScript files.
• Set proper cache headers for static assets (images, fonts, CSS, JS). Long cache lifetimes mean repeat visitors don’t re-download unchanged files.
• Check Time to First Byte (TTFB). If it’s above 600ms, the problem is server-side, not asset-side. That points to slow hosting, uncached server responses, or a database query somewhere in the request chain.

Core Web Vitals baseline

Before you redesign anything, measure where you stand. These are the numbers that matter:

Metric	Good	Needs Improvement	Poor
LCP (Largest Contentful Paint)	Under 2.5s	2.5s – 4s	Over 4s
INP (Interaction to Next Paint)	Under 200ms	200ms – 500ms	Over 500ms
CLS (Cumulative Layout Shift)	Under 0.1	0.1 – 0.25	Over 0.25

Source: Google Web Vitals thresholds

• Run your current page through PageSpeed Insights and note your scores for mobile and desktop separately.
• Identify your worst metric. That tells you where to focus first.
• Check your LCP element. It’s usually the hero image or the headline. If it’s an image, is it the right format and size?
• Check for CLS caused by images without dimensions, fonts swapping in, or embeds that expand after load.
• Re-run the test after your redesign launches to confirm you didn’t regress.

What this checklist looks like on a redesign project

On a landing page rebuild, speed checks should happen in three places.

Before design starts, review the existing page’s PageSpeed scores and tag audit. That tells you whether the current setup has structural problems to design around or whether the issues are purely asset and script weight.

During design, decisions get made with performance in mind. That means being intentional about font choices, hero media, and embedded tools. It’s much easier to choose a static hero image now than to redesign the hero section after launch because a video was killing LCP.

After build, before launch, the full checklist runs again. Images compressed and in modern formats. Fonts preloaded. Scripts deferred. Cache headers set. PageSpeed Insights scores verified on both mobile and desktop.

Speed isn’t a separate workstream. It’s part of building the page correctly the first time.

If you’re unsure whether your current page has speed problems worth fixing before a redesign, a focused Audit + Spec can diagnose exactly that. It’s $500 for one focused lens, and the fee credits toward follow-on work if you book within 30 days.

How to prioritize this landing page speed checklist for service businesses

Not every item on this checklist has equal impact. If you’re short on time or working through this yourself, here’s how to triage it.

Fix these first: Images and render-blocking scripts. These two categories cause the majority of speed problems on service landing pages. An uncompressed hero image alone can add two to four seconds to LCP. A render-blocking analytics or chat script can delay First Contentful Paint before a visitor sees anything at all.

Fix these second: Font loading and third-party tags. Font issues usually add a few hundred milliseconds and cause visible text flicker. Third-party tags accumulate quietly over months and years, so an audit often surfaces scripts from campaigns that ended long ago.

Fix these last: Hosting and CDN configuration. This matters, but most modern platforms (Vercel, Netlify, Cloudflare Pages) handle the basics automatically. If your TTFB is already under 600ms, focus your energy on assets and scripts before touching infrastructure.

A practical way to think about it: fix the things that are in your control before you touch infrastructure. A well-compressed, properly lazy-loaded page on shared hosting will often outperform a bloated page on a premium CDN.

Here’s how the categories stack up by typical impact:

Category	Typical impact on LCP	Effort to fix
Images (compression, format, sizing)	High	Low to medium
Render-blocking scripts	High	Medium
Font loading	Medium	Low
Third-party tags	Medium to high	Medium
Hosting and CDN	Low to medium	Low (if already on modern host)
Cache headers	Low	Low

This isn’t a universal ranking. Your specific page might have a chat widget that’s contributing 800kb on load, which would push third-party tags to the top. The point is to measure first, then fix in order of actual impact.

What doesn’t go on this checklist

A few things that get conflated with speed but are actually separate concerns.

SEO is not speed. A fast page doesn’t rank well automatically. Core Web Vitals are one signal among many. If you’re thinking about AI search visibility alongside performance, that’s a different problem covered by the AI Visibility / GEO Fix service.

Conversion rate is not speed. A page can be fast and still not convert if the headline is unclear, the CTA is buried, or the trust signals are weak. Speed is the floor, not the ceiling. See what makes a landing page convert for the conversion-focused version of this checklist.

Accessibility is not speed. Both matter before launch. They overlap in a few places (proper alt text helps both), but they’re separate checklists with different criteria.

Common mistakes service businesses make before a redesign

Not measuring the current page before starting. If you don’t know your baseline scores, you can’t tell whether the redesign improved anything.

Assuming the new build will automatically be faster. It won’t be if you carry over the same third-party scripts, the same uncompressed images, and the same unoptimized font stack.

Treating speed as the developer’s job. Designers make decisions that directly affect speed: hero media choices, font choices, embedded tool choices. Speed needs to be in the brief, not tacked on at the end.

Optimizing desktop but not mobile. PageSpeed Insights runs both tests separately. Mobile scores are almost always lower. If you’re only looking at desktop, you’re missing a significant portion of actual visitor experience.

Over-indexing on the score rather than the metric. A PageSpeed score of 90 can still have a poor LCP if the scoring is weighted heavily toward other passing checks. The individual metric thresholds matter more than the aggregate number.

Ready to build a fast, converting landing page? Dee Agency’s Landing Page Design & Build is a flat $3,000, speed included. Start a project.

Frequently asked questions

What is a landing page speed checklist for service businesses?

A landing page speed checklist for service businesses is a structured list of technical checks covering images, fonts, scripts, third-party tags, and hosting settings. You run it before designing or rebuilding a page to avoid performance problems that hurt both user experience and search visibility. The Core Web Vitals targets (LCP under 2.5s, INP under 200ms, CLS under 0.1) give you concrete pass/fail thresholds.

How do I test my landing page speed before a redesign?

Run your current page through Google PageSpeed Insights. It tests both mobile and desktop and breaks down your Core Web Vitals scores. Also check the Opportunities and Diagnostics sections, which tell you exactly what to fix. Do this before you start any redesign work so you have a baseline to compare against.

Does page speed affect landing page conversion rates?

Slow pages do affect conversions, though the exact impact varies by audience and page type. Google’s Web Vitals research links poor Core Web Vitals to higher bounce rates. The more practical point is that a slow page creates friction before a visitor even reads your headline. Speed is the floor your conversion rate sits on.

What causes slow landing pages for service businesses?

The most common causes are oversized uncompressed images, render-blocking third-party scripts (chat tools, analytics, pixels, embedded calendars), unoptimized custom fonts, and missing CDN or cache configuration. Most service business pages accumulate scripts over time without anyone auditing total load.

Should I fix speed issues before or during a redesign?

Before, ideally. Diagnose the current page’s problems first so you don’t carry them into the new design. Some issues, like script choices and hosting setup, can be addressed independently of design. Others, like hero image format and font choices, need to be baked into design decisions from the start.

When does a landing page speed problem need professional help?

When your PageSpeed score is poor on mobile and you can’t identify the cause from the Diagnostics tab, or when a third-party script is contributing most of the weight and you need to restructure how it loads. A focused Audit + Spec at $500 can pinpoint exactly where the problem is before you invest in a full rebuild.

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Ready to build a landing page that’s fast from the first commit? Dee Agency’s Landing Page Design & Build is $3,000 flat and includes speed optimization as part of the process. Get in touch to talk through your project.