antechdiagnostics.com website review

About 892 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 4.3 s faster on a phone.

46 files block the first paint until they finish downloading. Deferring or inlining them could save about 5.2 s.

23 files are served with short cache lifetimes, so returning visitors download them again (548 KiB).

Your mobile performance score is 44 (desktop: 58). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

8 third-party services load with your homepage (Google Tag Manager, ceros.site and Hubspot and others), adding 2.3 MB and 1.3 s of main-thread time.

8 images could be 674 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 650 ms faster on a phone.

Google Tag Manager costs a phone 512 ms of main-thread work and 852 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

A phone's processor spends 4.0 s on main-thread work while loading, 2.2 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

Hubspot costs a phone 202 ms of main-thread work and 452 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

ceros.site costs a phone 210 ms of main-thread work and 332 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

15 long tasks block the main thread while loading, the longest for 172 ms. During a long task the page ignores taps.

Polyfills for old browsers add 21 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 150 ms faster on a phone.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 100 ms).

About 21 KiB of CSS is downloaded but never applied on this page.

11 KiB could be saved by minifying JavaScript.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

The first text or image appears after 11.6 s on a phone. Good is under 1.8 s.

Your largest element takes 23.0 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Man in purple sweatshirt pointing to the Antech logo.”.

Visually, the page fills in at 15.7 s (Speed Index). Good is under 3.4 s.

The page becomes fully interactive after 24.4 s. Good is under 3.8 s.

Scripts block taps and scrolling for 450 ms in total while the page loads. Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 108 ms to 97 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 1.5 s to 1.7 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.0 MB in 169 requests on a phone: scripts 2.2 MB (56), images 843 KiB (31) and fonts 690 KiB (10). Under 2 MB keeps phones on slow connections fast.

image-24-1-768x765.png is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

By the Sustainable Web Design model, a visit to your homepage emits about 1.14 g of CO₂e: 137.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

21 visible links have no text or label, so screen readers cannot say where they go.

Headings should not be empty: 1 element on the page fails this check, rated minor by axe-core.

Your meta description is 182 characters; Google truncates after about 160, so the end of your pitch is cut.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

8 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

2 links have no real href, so search engines can't follow them.

The homepage links to 137 pages on antechdiagnostics.com and 27 external pages.

Your Organization JSON-LD is missing sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

There is no /llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

Your homepage links to 1 page by a URL that isn't its canonical one, for example /in-house-diagnostics/allergy, whose canonical is /reference-lab/diagnostics/allergy. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

/reference-lab has no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 88 found) and read each the way a search engine does.

1 third-party cookie is set on load; browsers are restricting these, so whatever relies on them breaks.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: the server responded with a status of 403 (Forbidden)”.

Chrome logged issues while loading the page (“Cookie”).

http://antechdiagnostics.com does not redirect to https, so some visitors land on the insecure version.

No Content-Security-Policy header, the main browser-side defence against injected scripts.

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

Opening https://antechdiagnostics.com goes through 2 redirects before the homepage loads.

No Referrer-Policy header, so full URLs can leak to the sites you link to.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

antechdiagnostics.com has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

antechdiagnostics.com's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

A local customer looking to call finds no phone number on the homepage. Add one, ideally as a tap-to-call link.

Social proof on the homepage: 6 testimonial or review blocks. Pairing it with named testimonials or customer logos makes it far more convincing.

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

The homepage shows no opening hours. If customers visit or call, show when.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 758 words of visible text.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Hotjar and HubSpot and 3 mores (measured from a US location before any click). A consent tool (OneTrust) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 6 cookies (measured from a US location before any click).

Loading the homepage contacts 34 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.