acist.com website review

102 files are served with short cache lifetimes, so returning visitors download them again (4.5 MB).

About 556 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 3.4 s faster on a phone.

50 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.3 s.

4 images could be 201 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 1.1 s faster on a phone.

About 118 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 52. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (Google Tag Manager, Clarity and cdn-cookieyes.com and others), adding 1.1 MB and 748 ms of main-thread time.

Google Tag Manager costs a phone 562 ms of main-thread work and 997 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.

21 KiB could be saved by minifying CSS.

A phone's processor spends 2.1 s on main-thread work while loading, 1.2 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

6 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 13 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 50 ms).

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.

Real visitors see the first content after 3.2 s (75th percentile). Good is under 1.8 s.

Real visitors wait 2.0 s for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 9.8 s on a phone. Good is under 1.8 s.

Your largest element takes 18.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Bracco and ACIST Medical Systems Announce U.S. FDA Clearanc…”.

The page becomes fully interactive after 18.7 s. Good is under 3.8 s.

Visually, the page fills in at 9.8 s (Speed Index). Good is under 3.4 s.

Real visitors wait 3.8 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 3.1 s to 3.9 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Scripts block taps and scrolling for 214 ms in total while the page loads. Good is under 200 ms.

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

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 96 ms to 109 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 20.4 MB in 167 requests on a phone: media 18.1 MB (3), scripts 1.4 MB (54) and images 311 KiB (20). Under 2 MB keeps phones on slow connections fast.

1 image (126 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.

1 image further down the page (126 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 5.78 g of CO₂e: 693.2 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”.

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

1 element has a tabindex above 0, which scrambles the keyboard order.

1 image has no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 13 elements on the page fail this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 2 elements on the page fail this check, rated moderate by axe-core.

Contentinfo landmark should not be contained in another landmark: 1 element on the page fails this check, rated moderate by axe-core.

Document should not have more than one contentinfo landmark: 1 element on the page fails this check, rated moderate by axe-core.

The page has no <main> landmark, so screen-reader users cannot jump straight to the content.

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

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

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

Your title is 75 characters, so Google will cut it off around 60: “Diagnostic & Interventional Cardiology Technologies - ACIST Medical Systems”.

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

The homepage links to 83 pages on acist.com and 27 external pages.

Your homepage links to 2 pages by a URL that isn't their canonical one, for example /about, whose canonical is /int/about-2. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

/int, /acist-pro, /cvi-calculator and /cvi-interactive-tool have no <h1> headline, so visitors and search engines get no clear main topic.

/acist-pro took over 3 s to send its HTML from our server.

We fetched 15 pages linked from your homepage (of 31 found) and read each the way a search engine does.

6 of 25 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

1 link go through two or more redirects, for example http://youtube.com/channel/UClz317sX14tan8HgWQ67Z1Q.

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.

acist.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.

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

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

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 392 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, LinkedIn Insight and Microsoft Clarity and 1 more (measured from a US location before any click). A consent tool (CookieYes) is installed; check it blocks these until visitors agree where the law requires it.

Opening the homepage sets 4 cookies (measured from a US location before any click).

Loading the homepage contacts 23 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.