synexis.com website review

26 files block the first paint until they finish downloading. Deferring or inlining them could save about 4.0 s.

ThreatMetrix costs a phone 3.3 s of main-thread work and 279 KiB 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.

About 206 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 1.1 s faster on a phone.

Your mobile performance score is 29 (desktop: 66). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 7.9 s on main-thread work while loading, 5.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

13 images could be 3.4 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 750 ms faster on a phone.

8 third-party services load with your homepage (ThreatMetrix, Google Tag Manager and Cookie-Script.com and others), adding 627 KiB and 3.9 s of main-thread time.

19 long tasks block the main thread while loading, the longest for 1.9 s. During a long task the page ignores taps.

About 172 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 750 ms faster on a phone.

Google Tag Manager costs a phone 324 ms of main-thread work and 182 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.

Cookie-Script.com costs a phone 258 ms of main-thread work and 32 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.

9 files are served with short cache lifetimes, so returning visitors download them again (50 KiB).

32 KiB could be saved by minifying CSS.

7 KiB could be saved by minifying JavaScript.

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

35 KiB JavaScript is shipped twice across bundles.

Polyfills for old browsers add 19 KiB JavaScript that modern phones do not need.

Desktop scores 66 but mobile only 29. A gap that wide usually means heavy scripts and images that hit phones hardest.

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.

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 25.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Synexis makes customer environments healthier and safer wit…”.

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

The first text or image appears after 5.9 s on a phone. Good is under 1.8 s.

Scripts block taps and scrolling for 2.6 s in total while the page loads. Good is under 200 ms.

Visually, the page fills in at 8.1 s (Speed Index). Good is under 3.4 s.

Real visitors wait 3.4 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 2.7 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.7 s for your server to start answering (75th percentile). Good is under 800 ms.

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

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 96 ms to 112 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 2.8 s to 3.3 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 22.7 MB in 146 requests on a phone: media 14.5 MB (2), images 6.0 MB (23) and scripts 872 KiB (84). Under 2 MB keeps phones on slow connections fast.

1 image is downloaded at several times the size a phone draws it, for example ISO9001_Hor.jpg at 948 px wide, shown at 250 px. Resized copies would save about 27 KiB.

1 image further down the page (71 KiB) download before anyone scrolls to it. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 6.44 g of CO₂e: 773.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

ARIA attributes must conform to valid values: 1 element on the page fails this check, rated critical by axe-core.

1 text element doesn't have enough contrast against the background to read easily, especially outdoors on a phone.

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

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

Headings skip levels (h2 → h4), which makes the page harder to scan with a screen reader.

Your title is 71 characters, so Google will cut it off around 60: “Synexis - Your Answer to Touchless, Continuous Pathogen Control Synexis”.

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

The homepage links to 126 pages on synexis.com and 5 external pages.

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

/device/sentry-xl and /industries/poultry took over 3 s to send their HTML from our server.

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

4 of 20 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

2 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

1 link from your homepage to your own site is broken, for example https://synexis.com/cdn-cgi/l/email-protection (404).

No Strict-Transport-Security header, so browsers may still try plain http first on a return visit.

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

Neither X-Frame-Options nor a CSP frame-ancestors policy is set, so any site can embed yours in a frame.

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

3 links go through two or more redirects, for example https://synexis.com/technology/devices/sphere/.

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.

synexis.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.

synexis.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.

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.

Social proof on the homepage: 1 customer or partner logo. Pairing it with named testimonials or customer logos makes it far more convincing.

Your longest form asks for 16 fields (6 required). Every extra field lowers completion.

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 1,716 words of visible text.

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

We found no DKIM key on the selectors the big email providers use. If you send through one of them, turning on DKIM signing improves delivery.

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 Analytics, Google Tag Manager and HubSpot (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 2 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 13 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.