dcol.net website review

About 1.3 MB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 9.1 s faster on a phone.

16 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.4 s.

YouTube costs a phone 1.1 s of main-thread work and 1.9 MB of downloads while your page loads. That alone is enough to make taps feel slow. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

Your mobile performance score is 43. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

8 third-party services load with your homepage (YouTube, Google Tag Manager and Google Analytics and others), adding 2.3 MB and 1.2 s of main-thread time.

About 150 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

4 images could be 164 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 300 ms faster on a phone.

A phone's processor spends 3.3 s on main-thread work while loading, 1.6 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

12 long tasks block the main thread while loading, the longest for 275 ms. During a long task the page ignores taps.

The page has 2,068 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

Polyfills for old browsers add 30 KiB JavaScript that modern phones do not need.

3 files are served with short cache lifetimes, so returning visitors download them again (17 KiB).

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.

3 KiB could be saved by minifying CSS.

The first text or image appears after 11.4 s on a phone. Good is under 1.8 s.

Your largest element takes 22.9 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the element shown below.

The page becomes fully interactive after 23.1 s. Good is under 3.8 s.

Visually, the page fills in at 11.4 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 498 ms in total while the page loads. Good is under 200 ms.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 68 ms to 74 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 1.3 s to 1.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 4.0 MB in 104 requests on a phone: scripts 2.3 MB (41), images 817 KiB (19) and fonts 450 KiB (6). Under 2 MB keeps phones on slow connections fast.

1 image is downloaded at several times the size a phone draws it, for example Vaccine_Update_5_21.jpg at 1,200 px wide, shown at 348 px. Resized copies would save about 40 KiB.

4 images (348 KiB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

By the Sustainable Web Design model, a visit to your homepage emits about 1.14 g of CO₂e: 136.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

19 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

5 images have no alt text, which hurts accessibility and image search.

11 form fields have no label, so screen readers announce an empty box and autofill guesses.

Headings should not be empty: 3 elements on the page fail this check, rated minor by axe-core.

Headings skip levels (h1 → h4, h4 → h6 and h4 → h6), which makes the page harder to scan with a screen reader.

No meta description, so Google writes its own snippet from whatever text it finds.

Your title is 72 characters, so Google will cut it off around 60: “Diagnostic Clinic of Longview (Homepage) - Diagnostic Clinic of Longview”.

There are 9 <h1> headlines (“Names You Know, People You Trust”, “Welcome to Diagnostic Clinic” and “Welcome to Diagnostic Clinic”). One clear main headline is easier for people and search engines.

1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.

The homepage links to 185 pages on dcol.net and 22 external pages.

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.

/patient-portals, /providers, /contact/locations, /services, /resources/about and /services/allergy-asthma-immunology and 9 others have no meta description, so Google writes the search snippet from whatever text it finds.

We fetched 15 pages linked from your homepage (of 34 found) and read each the way a search engine does.

5 third-party cookies are set on load; browsers are restricting these, so whatever relies on them breaks.

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

Large scripts ship without source maps.

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

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.

The homepage has only about 203 words of visible text; thin pages give Google and first-time buyers little to go on.

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.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics and Google Tag Manager (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 7 cookies, 1 of them by other companies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 12 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.