quicksilverscientific.com website review

19 images could be 556 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 1.8 s faster on a phone.

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

Your mobile performance score is 42. Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 7.4 s on main-thread work while loading, 4.1 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (Optanon, Google CDN and Google Tag Manager and others), adding 1.6 MB and 1.6 s of main-thread time.

About 1.1 MB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 150 ms faster on a phone.

36 files are served with short cache lifetimes, so returning visitors download them again (848 KiB).

Optanon costs a phone 389 ms of main-thread work and 240 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.

About 71 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 300 ms faster on a phone.

The page has 2,915 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

Google CDN costs a phone 247 ms of main-thread work and 330 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.

Google Tag Manager costs a phone 235 ms of main-thread work and 324 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.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 250 ms).

20 long tasks block the main thread while loading, the longest for 228 ms. During a long task the page ignores taps.

Polyfills for old browsers add 76 KiB JavaScript that modern phones do not need.

60 KiB could be saved by minifying JavaScript.

36 KiB JavaScript is shipped twice across bundles.

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.

2 KiB could be saved by minifying CSS.

The page becomes fully interactive after 28.3 s. Good is under 3.8 s.

Your largest element takes 8.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “logo”.

Visually, the page fills in at 9.6 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 856 ms in total while the page loads. Good is under 200 ms.

The first text or image appears after 2.7 s on a phone. Good is under 1.8 s.

39 images have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 95 ms to 102 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 1.5 s to 1.6 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 5.3 MB in 411 requests on a phone: scripts 2.6 MB (117), images 1.1 MB (59) and other files 1.1 MB (162). Under 2 MB keeps phones on slow connections fast.

1 image is downloaded at several times the size a phone draws it, for example unpa.webp at 621 px wide, shown at 60 px. Resized copies would save about 76 KiB.

1 image (83 KiB) is 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.

2 images further down the page (118 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 1.50 g of CO₂e: 180.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

Some list items are not inside a list.

Some lists contain elements other than list items, which screen readers announce wrongly.

Interactive controls must not be nested: 2 elements on the page fail this check, rated serious by axe-core.

All page content should be contained by landmarks: 1 element on the page fails this check, rated moderate by axe-core.

1 frame has no title, so screen-reader users cannot tell what it contains.

Headings skip levels (h3 → h5), which makes the page harder to scan with a screen reader.

Elements with visible text labels do not have matching accessible names. (1 element).

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

Your <h1> is empty.

The homepage links to 118 pages on quicksilverscientific.com and 18 external pages.

https://www.quicksilverscientific.com/pages/about-quinton, https://www.quicksilverscientific.com/pages/the-power-of-marine-therapy, https://www.quicksilverscientific.com/pages/extraction, https://www.quicksilverscientific.com/pages/informed-sport-certification, https://www.quicksilverscientific.com/pages/quinton-meet-our-experts and https://www.quicksilverscientific.com/pages/subscribe have no meta description, so Google writes the search snippet from whatever text it finds.

Your homepage links to 1 page by a URL that isn't its canonical one, for example https://www.quicksilverscientific.com/pages/about, whose canonical is https://www.quicksilverscientific.com/pages/aboutdrshade. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

https://www.quicksilverscientific.com/pages/liposomal-delivery, https://www.quicksilverscientific.com/pages/our-story, https://www.quicksilverscientific.com/pages/practitioner-locator, https://www.quicksilverscientific.com/pages/detoxification, https://www.quicksilverscientific.com/pages/about-quinton and https://www.quicksilverscientific.com/pages/the-power-of-marine-therapy and 2 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://www.quicksilverscientific.com/pages/practitioner-locator took over 3 s to send its HTML from our server.

We fetched 15 pages linked from your homepage (of 53 found) and read each the way a search engine does.

21 of 73 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

The page uses 1 deprecated browser API that will stop working in future browsers (“Unload event listeners are deprecated and will be removed.”).

6 errors were logged to the browser console while the page loaded, for example “jQuery(...).slick is not a function”.

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

The homepage carries about 943 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Klaviyo and Meta Pixel 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 21 cookies, 2 of them by other companies (measured from a US location before any click).

Loading the homepage contacts 51 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.