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vyv.tech website review

Visit site (opens in a new tab)Reviewed 23 October 202634 issues · 76 checks

This review found 34 issues worth fixing on vyv.tech, 16 of them high impact, across 76 checks. The most urgent: improve image delivery. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.

  1. Homepage
  2. Phone render
  3. Links and pages
  4. Google PageSpeed

Google PageSpeed Insights (opens in a new tab), mobile

Real-visitor load time (LCP)75th percentile, phones
2.6 s1.5 sMay 9Jun 132.2 s
Show as table
DateReal-visitor load time (LCP)
May 9, 20262.4 s
May 16, 20261.9 s
May 23, 20261.7 s
May 30, 20261.6 s
Jun 13, 20262.2 s

Chrome UX Report (opens in a new tab): real Chrome visitors over rolling 28-day periods.

One score from every part of this review. How it works

Full-page screenshot of vyv.tech (desktop) rendered by Google PageSpeed Insights

How it loaded on a phone

  1. vyv.tech at 0.4 s0.4 s
  2. vyv.tech at 0.8 s0.8 s
  3. vyv.tech at 1.1 s1.1 s
  4. vyv.tech at 1.5 s1.5 s
  5. vyv.tech at 1.9 s1.9 s
  6. vyv.tech at 2.3 s2.3 s
  7. vyv.tech at 2.6 s2.6 s
  8. vyv.tech at 3.0 s3.0 s

Speed

9 to fix47
  • Improve image delivery

    10.6 s · 3.4 MB

    10 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 10.6 s faster on a phone.

  • Render-blocking requests

    4.5 s

    43 files block the first paint until they finish downloading. Deferring or inlining them could save about 4.5 s.

  • Reduce unused JavaScript

    2.3 s · 449 KiB

    About 449 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.3 s faster on a phone.

  • Reduce unused CSS

    1.1 s · 143 KiB

    About 143 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.

  • Mobile performance score: 47

    47/100

    Your mobile performance score is 47 (desktop: 52). Under 50 is Google's “poor” band: many phone visitors leave before the page is usable.

  • Use efficient cache lifetimes

    950 ms · 99 KiB

    9 files are served with short cache lifetimes, so returning visitors download them again (99 KiB).

  • 8 third-party services on the page

    8 third-party services load with your homepage (Google Tag Manager, Hotjar and Crazy Egg and others), adding 561 KiB and 694 ms of main-thread time.

  • Google Tag Manager adds 347 ms

    347 ms

    Google Tag Manager costs a phone 347 ms of main-thread work and 303 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.

  • Main-thread work: 2.2 s

    A phone's processor spends 2.2 s on main-thread work while loading, 1.0 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

  • 10 long tasks on the main thread

    10 long tasks block the main thread while loading, the longest for 232 ms. During a long task the page ignores taps.

  • Minify JavaScript

    13 KiB

    13 KiB could be saved by minifying JavaScript.

  • Legacy JavaScript

    11 KiB

    Polyfills for old browsers add 11 KiB JavaScript that modern phones do not need.

  • Chained critical requests

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

  • Forced reflow

    Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

1 checks passed
  • Server response: 7 ms

    7 ms

    Your server sent the HTML in 7 ms, well inside Google's 600 ms guideline.

Core Web Vitals

5 to fix57
  • First Contentful Paint: 7.8 s

    7.8 s

    The first text or image appears after 7.8 s on a phone. Good is under 1.8 s.

  • Largest Contentful Paint: 25.3 s

    25.3 s

    Your largest element takes 25.3 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Vyv Office Enhanced Mode”.

  • Time to Interactive: 25.3 s

    25.3 s

    The page becomes fully interactive after 25.3 s. Good is under 3.8 s.

  • Speed Index: 11.1 s

    11.1 s

    Visually, the page fills in at 11.1 s (Speed Index). Good is under 3.4 s.

  • Total Blocking Time: 356 ms

    356 ms

    Scripts block taps and scrolling for 356 ms in total while the page loads. Good is under 200 ms.

  • Not enough real-visitor data yet

    Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

2 checks passed
  • Largest content (LCP) got 10% faster for real visitors

    -10%

    Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 2.4 s to 2.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Cumulative Layout Shift: 0

    0

    The layout barely moves while loading (CLS 0, good is under 0.1).

Images and page weight

5 to fix18
  • Page weight: 5.6 MB in 142 requests

    5.6 MB

    Your homepage downloads 5.6 MB in 142 requests on a phone: images 4.1 MB (27), scripts 922 KiB (55) and fonts 343 KiB (5). Under 2 MB keeps phones on slow connections fast.

  • 3 images over 500 KB

    3 images weigh 2.0 MB together. On a phone connection a single image that size takes seconds.

  • 5 images far larger than shown

    1.5 MB

    5 images are downloaded at several times the size a phone draws them, for example CitiOfficeDualMode.png at 1,244 px wide, shown at 342 px. Resized copies would save about 1.5 MB.

  • 4 images in older formats

    4 images (1.9 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.

  • 3 images below the first screen load straight away

    3 images further down the page (1.4 MB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

  • About 1.6 g of CO₂ per visit

    1.58 g

    By the Sustainable Web Design model, a visit to your homepage emits about 1.58 g of CO₂e: 189.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Accessibility

4 to fixGoogle 8994
  • 12 text elements with low contrast

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

  • 1 image without alt text

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

  • All page content should be contained by landmarks (2 elements)

    All page content should be contained by landmarks: 2 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 (1 element)

    Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

  • Headings skip levels

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

1 checks passed
  • 43 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 48 WCAG 2.2 A/AA and best-practice rules on the phone render: 43 passed and 5 failed. 1 more need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

3 to fixGoogle 7793
  • No social preview image

    No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

  • 1 link crawlers can't follow

    1 link has no real href, so search engines can't follow it.

  • 1 link with vague text

    1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.

  • 56 internal links, 2 external

    The homepage links to 56 pages on vyv.tech and 2 external pages.

7 checks passed
  • Meta description: 142 characters

    Your meta description is 142 characters: “Vyv (prev. Vital Vio) UV-free Antimicrobial Light works around the clock to create cleaner environments in the places w…”.

  • One H1 headline

    Your main headline reads: “Bright Solutions for a Cleaner World.”.

  • Title: 60 characters

    Your title is a healthy 60 characters: “Antimicrobial LED Lights for Home, Public and Industry | Vyv”.

  • Canonical URL set

    The canonical URL is https://vyv.tech/.

  • Structured data in place

    Structured data found: BreadcrumbList, Organization, WebPage and WebSite.

  • robots.txt in place

    robots.txt is in place.

  • XML sitemap found

    Your XML sitemap is reachable at https://vyv.tech/sitemap.xml.

AI search readiness

100
  • No llms.txt

    There is no https://vyv.tech/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.

3 checks passed
  • AI answer engines may read the site

    Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.

  • Organization data: 4 of 6 facts

    Your Organization JSON-LD gives name, url, logo and sameAs (social profiles); description and contact details would complete it.

  • Text is in the HTML

    Your server sends the page's text in the HTML (539 words), so crawlers that don't run JavaScript still read it.

Other pages

2 to fix90
  • 2 pages without a meta description

    https://vyv.tech/products and https://vyv.tech/vyv-everywhere/home have no meta description, so Google writes the search snippet from whatever text it finds.

  • 2 pages without an H1

    https://vyv.tech/products and https://vyv.tech/consumer-products have no <h1> headline, so visitors and search engines get no clear main topic.

  • 1 page with very little text

    https://vyv.tech/products 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.

  • 2 pages slow to respond

    https://vyv.tech/why-vyv/uv-light and https://vyv.tech/vyv-everywhere/home took over 3 s to send their HTML from our server.

  • 15 internal pages checked

    We fetched 15 pages linked from your homepage (of 40 found) and read each the way a search engine does.

5 checks passed
  • Linked pages load

    All 15 pages we checked loaded without an error.

  • Canonical URLs point to themselves

    No page we checked hands its ranking to a different URL.

  • Titles are unique

    Every page we checked has its own title.

  • No linked page is hidden from search

    None of the pages we checked carries a noindex tag.

  • Every page has a title

    All 15 pages that loaded have a <title>.

Best practices

3 to fixGoogle 9671
  • 1 broken image

    1 image failed to load on a phone, for example https://none/.

  • 9 small tap targets

    9 of 15 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

  • 1 JavaScript error while loading

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

1 checks passed
  • Mobile viewport set

    The page declares a mobile viewport.

Content and conversion

2 to fix63
  • No call to action on the first screen

    On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

  • Thin social proof

    Social proof on the homepage: 34 customer or partner logos. Pairing it with named testimonials or customer logos makes it far more convincing.

  • Phone number is not tap-to-call

    Your phone number appears as text but isn't a tel: link, so phone visitors can't tap to call.

  • No form on the homepage

    There is no form on the homepage, so every lead has to click through to another page first.

  • No risk reducer

    No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

  • About 650 words of copy

    The homepage carries about 650 words of visible text.

2 checks passed
  • 2 calls to action

    The homepage has 2 calls to action, for example “Contact Sales” and “LEARN MORE”.

  • Analytics in place

    Analytics detected: Google Analytics, Hotjar, HubSpot and LinkedIn Insight.

Privacy and tracking

1 to fix
  • 6 trackers load before any consent

    6

    Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Hotjar and HubSpot 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.

  • 9 cookies set on arrival

    9

    Opening the homepage sets 9 cookies, 1 of them by other companies (measured from a US location before any click).

  • No consent tool detected

    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.

  • 22 other companies contacted

    Loading the homepage contacts 22 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.

Security, domain, email and software versions

The security, domain and email checks, software and plugin versions, and any app with a known security problem are visible only to people at vyv.tech, because details like these could help someone attack a site. Every review keeps them private, whatever they found.

Upkeep, stack and company

Stack

CMS
WordPress
Framework
jQuery
Analytics
Google Analytics | Hotjar

Upkeep, stack, hiring and company data from programmable.info

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