4es-usa.com website review

About 304 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.4 s faster on a phone.

Your mobile performance score is 69. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (Hotjar, Shopify and Facebook and others), adding 833 KiB and 565 ms of main-thread time.

23 files are served with short cache lifetimes, so returning visitors download them again (254 KiB).

8 files block the first paint until they finish downloading. Deferring or inlining them could save about 300 ms.

4 long tasks block the main thread while loading, the longest for 80 ms. During a long task the page ignores taps.

5 images could be 53 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Polyfills for old browsers add 13 KiB JavaScript that modern phones do not need.

About 10 KiB of CSS is downloaded but never applied on this page.

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

4 KiB could be saved by minifying JavaScript.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Your largest element takes 9.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Collection of life science tools and laboratory instruments…”.

The page becomes fully interactive after 13.5 s. Good is under 3.8 s.

Real visitors see the first content after 1.9 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.0 s for your server to start answering (75th percentile). Good is under 800 ms.

Visually, the page fills in at 5.6 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 1.9 s on a phone. Good is under 1.8 s.

2 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 154 ms to 160 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 2.3 s to 2.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.7 MB in 360 requests on a phone: other files 1.0 MB (190), scripts 951 KiB (68) and images 525 KiB (59). Under 2 MB keeps phones on slow connections fast.

3 images further down the page (80 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 0.77 g of CO₂e: 92.5 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

2 buttons have no accessible name, so screen readers announce just “button”.

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

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

All page content should be contained by landmarks: 7 elements on the page fail this check, rated moderate by axe-core.

Page should contain a level-one heading: 1 element on the page fails this check, rated moderate by axe-core.

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

1 visible link has no text or label, so screen readers cannot say where it goes.

There is no <h1>, so neither visitors nor Google get a clear main headline.

Your title is only 26 characters: “Your Lab Equipment Partner”. Between 30 and 65 characters leaves room to say what you do and for whom.

Your meta description is 215 characters; Google truncates after about 160, so the end of your pitch is cut.

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

The homepage links to 127 pages on 4es-usa.com and 4 external pages.

/blogs/news has no meta description, so Google writes the search snippet from whatever text it finds.

/blogs/news, /collections/water-baths and /collections/dry-bath-incubator-series have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 61 found) and read each the way a search engine does.

2 images failed to load on a phone, for example https://bat.bing.com/action/0?ti=136015204&Ver=2&mid=5c6f0874-146c-41bd-93d1-1690e843d48f&bo=1&sid=3300aef0db6a11f1945829a4ad074699&vid=3300d5c0db6a11f19bb9239ddcb21418&vids=1&msclkid=N&pi=918639831&l.

5 of 22 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

6 errors were logged to the browser console while the page loaded, for example “Refused to apply style from 'https://www.4es-usa.com/cdn/shop/t/125/assets/sticky-footer.css?v=16333' because its MIME …”.

2 images are displayed at the wrong aspect ratio, so they look stretched or squashed.

HSTS is set, but max-age is 91 days; one year is the recommended minimum.

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.

X-XSS-Protection is set to “1; mode=block”; the header is deprecated and can introduce bugs. Use 0 or remove it.

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

4es-usa.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.

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.

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 469 words of visible text.

DMARC is set to p=none, so mail pretending to be 4es-usa.com is still delivered. Add a report address, check the reports, then move to quarantine.

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 Meta Pixel and 1 more (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 21 cookies (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 33 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.