tsi.com website review

About 704 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.5 s faster on a phone.

25 files are served with short cache lifetimes, so returning visitors download them again (529 KiB).

audioeye-services.com costs a phone 1.1 s of main-thread work and 298 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.

Your mobile performance score is 42 (desktop: 64). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

A phone's processor spends 5.8 s on main-thread work while loading, 4.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

15 images could be 3.6 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

8 third-party services load with your homepage (audioeye-services.com, Google Tag Manager and Facebook and others), adding 1.4 MB and 2.8 s of main-thread time.

Google Tag Manager costs a phone 930 ms of main-thread work and 533 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 193 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 600 ms faster on a phone.

1 file blocks the first paint until they finish downloading. Deferring or inlining it could save about 400 ms.

20 long tasks block the main thread while loading, the longest for 337 ms. During a long task the page ignores taps.

Polyfills for old browsers add 77 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).

24 KiB could be saved by minifying JavaScript.

9 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.

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 13.0 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Introducing BioTrak II BFPC — Catching Contamination at the…”.

The page becomes fully interactive after 16.8 s. Good is under 3.8 s.

Visually, the page fills in at 8.2 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 1.1 s in total while the page loads. Good is under 200 ms.

Real visitors wait 3.6 s for the largest content to appear (75th percentile). Good is under 2.5 s.

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

Real visitors wait 1.3 s for your server to start answering (75th percentile). Good is under 800 ms.

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

The first text or image appears after 2.3 s on a phone. Good is under 1.8 s.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 110 ms to 113 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 2.5 s to 2.7 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 6.5 MB in 118 requests on a phone: images 4.4 MB (37), scripts 1.8 MB (41) and stylesheets 185 KiB (4). Under 2 MB keeps phones on slow connections fast.

4 images weigh 2.6 MB together. On a phone connection a single image that size takes seconds.

6 images are downloaded at several times the size a phone draws them, for example 7627803248_PI_2024_PWCPC-Launch-Package_4pics_TSI-Homepage-1 at 1,920 px wide, shown at 390 px. Resized copies would save about 1.9 MB.

12 images (3.4 MB) 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 1.85 g of CO₂e: 222.0 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 element use ARIA attributes their role does not allow, which confuses screen readers.

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

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

All page content should be contained by landmarks: 11 elements on the page fail 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.

Headings skip levels (h1 → h3), which makes the page harder to scan with a screen reader.

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

There are 8 <h1> headlines (“Introducing BioTrak II BFPC — Catching Contaminat…”, “Expanding the OmniCount™ Family” and “TSI OmniCount™ PWCPC Wins Two 2026 OH&S New Produ…”). One clear main headline is easier for people and search engines.

Your meta description is 337 characters; Google truncates after about 160, so the end of your pitch is cut.

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

Open Graph is missing og:description, so shared links fall back to guesses.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 168 pages on tsi.com and 13 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no https://tsi.com/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.

Your homepage links to 1 page by a URL that isn't its canonical one, for example https://tsi.com/Indoor-Environments, whose canonical is https://tsi.com/indoor-environments. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

https://tsi.com/markets, https://tsi.com/electronics-manufacturing, https://tsi.com/emergency-response-and-law-enforcement, https://tsi.com/healthcare, https://tsi.com/hvac-consultant and https://tsi.com/Indoor-Environments and 5 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://tsi.com/cn has under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

We fetched 15 pages linked from your homepage (of 75 found) and read each the way a search engine does.

1 image failed to load on a phone, for example https://bat.bing.com/action/0?ti=343267906&tm=gtm002&Ver=2&mid=eb78d1a0-804e-45fa-bb2b-f0d7aa96c864&bo=1&sid=c687f3b0d1d511f1b8921b374f67c85d&vid=c6880180d1d511f1ac67bfd2d1fd577b&vids=1&msclkid=N&pi=9.

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

3 errors were logged to the browser console while the page loaded, for example “Access to XMLHttpRequest at 'https://wsv3cdn.audioeye-services.com/static-scripts/v2/2026-10-22/compliance.css' from or…”.

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: 2 trust badges. Pairing it with named testimonials or customer logos makes it far more convincing.

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 711 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, HubSpot and LinkedIn Insight and 4 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 28 cookies (measured from a US location before any click).

Loading the homepage contacts 43 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.