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corza.com website review

Visit site (opens in a new tab)Reviewed 28 October 202637 issues · 102 checks

This review found 37 issues worth fixing on corza.com, 9 of them high impact, across 102 checks. The most urgent: render-blocking requests. 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
3.2 s2.2 sMay 9Oct 242.9 s
Show as table
DateReal-visitor load time (LCP)
May 9, 20262.4 s
May 16, 20262.4 s
May 23, 20262.5 s
May 30, 20262.4 s
Jun 6, 20262.3 s
Jun 13, 20262.3 s
Jun 20, 20262.4 s
Jun 27, 20262.5 s
Jul 4, 20262.6 s
Jul 11, 20262.8 s
Jul 18, 20263.0 s
Jul 25, 20263.0 s
Aug 1, 20262.9 s
Aug 8, 20262.8 s
Aug 15, 20262.7 s
Aug 22, 20262.6 s
Aug 29, 20262.7 s
Sep 5, 20262.8 s
Sep 12, 20262.9 s
Sep 19, 20263.1 s
Sep 26, 20263.0 s
Oct 3, 20263.0 s
Oct 10, 20263.1 s
Oct 17, 20262.9 s
Oct 24, 20262.9 s
Real-visitor tap response (INP)75th percentile, phones
103 ms83 msMay 9Oct 2487 ms
Show as table
DateReal-visitor tap response (INP)
May 9, 202689 ms
May 16, 202692 ms
May 23, 202695 ms
May 30, 2026101 ms
Jun 6, 202697 ms
Jun 13, 202688 ms
Jun 20, 202689 ms
Jun 27, 202688 ms
Jul 4, 202691 ms
Jul 11, 202689 ms
Jul 18, 202689 ms
Jul 25, 202691 ms
Aug 1, 202689 ms
Aug 8, 202696 ms
Aug 15, 202696 ms
Aug 22, 202691 ms
Aug 29, 202688 ms
Sep 5, 202685 ms
Sep 12, 202685 ms
Sep 19, 202694 ms
Sep 26, 202697 ms
Oct 3, 202698 ms
Oct 10, 202696 ms
Oct 17, 202691 ms
Oct 24, 202687 ms

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 corza.com (desktop) rendered by Google PageSpeed Insights

How it loaded on a phone

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

corza.com does not allow embedding, so this is Google's rendering of the page.

Speed

8 to fix91
  • Render-blocking requests

    1.3 s

    8 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.3 s.

  • Improve image delivery

    150 ms · 2.7 MB

    20 images could be 2.7 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.

  • Document request latency

    600 ms

    The HTML itself could arrive about 600 ms sooner: redirects, a slow server response or missing compression delay everything after it.

  • Reduce initial server response time

    579 ms

    Reduce initial server response time. Google estimates savings of 579 ms on a phone.

  • Reduce unused CSS

    450 ms · 87 KiB

    About 87 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

  • Reduce unused JavaScript

    150 ms · 303 KiB

    About 303 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 150 ms faster on a phone.

  • 1,704 HTML elements

    The page has 1,704 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

  • Server response: 679 ms

    679 ms

    Your server takes 679 ms to send the HTML. Google recommends under 600 ms; everything else waits for it.

  • 2 third-party services on the page

    2 third-party services load with your homepage (Google Tag Manager and Cookiebot), adding 329 KiB and 163 ms of main-thread time.

  • 2 long tasks on the main thread

    2 long tasks block the main thread while loading, the longest for 83 ms. During a long task the page ignores taps.

  • Use efficient cache lifetimes

    33 KiB

    1 file is served with short cache lifetimes, so returning visitors download them again (33 KiB).

  • 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.

  • Minify CSS

    5 KiB

    5 KiB could be saved by minifying CSS.

2 checks passed
  • Mobile performance score: 91

    91/100

    Your mobile performance score is 91 (desktop: 94). That is in Google's “good” band (90 and up).

  • Main-thread work: 0.9 s

    A phone's processor spends 0.9 s on main-thread work while loading, 277 ms of it running JavaScript. That is comfortably low.

Core Web Vitals

10 to fix67
  • Fails Core Web Vitals for real visitors

    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-user TTFB: 1.9 s

    1.9 s

    Real visitors wait 1.9 s for your server to start answering (75th percentile). Good is under 800 ms.

  • Real-user LCP: 3.0 s

    3.0 s

    Real visitors wait 3.0 s for the largest content to appear (75th percentile). Good is under 2.5 s.

  • Largest content (LCP) got 21% slower for real visitors

    +21%

    Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' largest content (lcp) went from 2.4 s to 2.9 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Real-user FCP: 2.2 s

    2.2 s

    Real visitors see the first content after 2.2 s (75th percentile). Good is under 1.8 s.

  • Time to Interactive: 6.8 s

    6.8 s

    The page becomes fully interactive after 6.8 s. Good is under 3.8 s.

  • Largest Contentful Paint: 3.2 s

    3.2 s

    Your largest element takes 3.2 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “hero”.

  • First Contentful Paint: 2.0 s

    2.0 s

    The first text or image appears after 2.0 s on a phone. Good is under 1.8 s.

  • Speed Index: 3.5 s

    3.5 s

    Visually, the page fills in at 3.5 s (Speed Index). Good is under 3.4 s.

  • 12 images without width and height

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

  • Tap response (INP) held steady for real visitors

    -2%

    Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 89 ms to 87 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

4 checks passed
  • Real-user INP: 88 ms

    88 ms

    Real visitors wait 88 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

  • Real-user CLS: 0.00

    0.00

    For real visitors the layout shifts by 0.00 (75th percentile). Good is under 0.1.

  • Cumulative Layout Shift: 0.002

    0.002

    The layout barely moves while loading (CLS 0.002, good is under 0.1).

  • Total Blocking Time: 38 ms

    38 ms

    Scripts block the page for only 38 ms while loading. Good is under 200 ms.

Images and page weight

5 to fix18
  • Page weight: 5.1 MB in 63 requests

    5.1 MB

    Your homepage downloads 5.1 MB in 63 requests on a phone: images 4.2 MB (40), scripts 549 KiB (11) and HTML 139 KiB (2). Under 2 MB keeps phones on slow connections fast.

  • 1 image over 500 KB

    Corza_Blink-Packs_Email_image_3-1390x900.png weighs 1.0 MB. On a phone connection a single image that size takes seconds.

  • 7 images far larger than shown

    908 KiB

    7 images are downloaded at several times the size a phone draws them, for example Corza_Blink-Packs_Email_image_3-1390x900.png at 1,390 px wide, shown at 298 px. Resized copies would save about 908 KiB.

  • 13 images below the first screen load straight away

    13 images further down the page (2.6 MB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

  • 12 images in older formats

    12 images (1.2 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.

  • About 1.4 g of CO₂ per visit

    1.43 g

    By the Sustainable Web Design model, a visit to your homepage emits about 1.43 g of CO₂e: 171.9 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

Accessibility

4 to fixGoogle 8694
  • 11 text elements with low contrast

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

  • 4 images without alt text

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

  • 2 form fields without a label

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

  • 1 link without text

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

  • Headings skip levels

    Headings skip levels (h2 → h5), which makes the page harder to scan with a screen reader.

1 checks passed
  • 47 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 51 WCAG 2.2 A/AA and best-practice rules on the phone render: 47 passed and 4 failed. 1 more need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

6 to fixGoogle 8574
  • Title is short (20 characters)

    Your title is only 20 characters: “Home - Corza Medical”. Between 30 and 65 characters leaves room to say what you do and for whom.

  • 12 H1 headlines

    There are 12 <h1> headlines (“Our solutions”, “Our promise to you” and “Corza Medical Launches Expanded Blink Single-Use …”). One clear main headline is easier for people and search engines.

  • Meta description is long (308 characters)

    Your meta description is 308 characters; Google truncates after about 160, so the end of your pitch is cut.

  • Structured data has 3 problems

    Structured data found (Article, ImageObject, Organization and Person) but with 3 problems, for example “Organization: logo is not an absolute URL ("/wp-content/uploads/2022/01/GRIZ_CorzaMedical-Full-Logo…”.

  • No social preview image

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

  • 18 links with vague text

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

  • 76 internal links, 16 external

    The homepage links to 76 pages on corza.com and 16 external pages.

3 checks passed
  • Canonical URL set

    The canonical URL is https://corza.com/.

  • robots.txt in place

    robots.txt is in place and points crawlers to your sitemap.

  • XML sitemap found

    Your XML sitemap is reachable at https://corza.com/sitemap_index.xml.

AI search readiness

100
  • No llms.txt

    There is no /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: 5 of 6 facts

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

  • Text is in the HTML

    Your server sends the page's text in the HTML (752 words), so crawlers that don't run JavaScript still read it.

Other pages

2 to fix90
  • 8 pages without a meta description

    /about, /careers, /products/ophthalmology, /biomedical-textile-resource-center, /leadership and /culture and 2 others have no meta description, so Google writes the search snippet from whatever text it finds.

  • 4 pages without an H1

    /resources, /products/hemostasis-and-sealing, /events and /news have no <h1> headline, so visitors and search engines get no clear main topic.

  • 15 internal pages checked

    We fetched 15 pages linked from your homepage (of 33 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

Google 100100
3 checks passed
  • No console errors

    No JavaScript errors were logged while the page loaded on a phone.

  • Tap targets are thumb-sized

    18 of 19 tappable elements near the top are at least 24 px.

  • Mobile viewport set

    The page declares a mobile viewport.

Security and trust

100
  • Short HSTS lifetime

    HSTS is set, but max-age is 0 days; one year is the recommended minimum.

  • 2 links through redirect chains

    2 links go through two or more redirects, for example https://bit.ly/3P7O8Ku.

  • No Permissions-Policy

    No Permissions-Policy header to switch off camera, microphone and location for embedded content.

  • No security.txt

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

7 checks passed
  • Served over HTTPS

    The homepage is served over HTTPS (corza.com).

  • Valid certificate (83 days left)

    The certificate from Let's Encrypt · YE1 verifies for corza.com and is valid for another 83 days.

  • Protected from clickjacking

    X-Frame-Options or a frame-ancestors policy stops other sites framing yours.

  • Content-Security-Policy set

    A Content-Security-Policy is set, the main browser-side defence against injected scripts.

  • http:// redirects to https

    http://corza.com redirects to the secure version.

  • HTTP/2 and HTTP/3

    The server speaks HTTP/2 and advertises HTTP/3, so browsers load many files over one connection.

  • All 46 links work

    All 46 links checked from your homepage (37 internal, 9 external) answered without errors.

Domain and trust

  • No CAA record

    corza.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.

  • DNSSEC is off

    corza.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.

2 checks passed
  • Domain is 27 years old

    27 years

    corza.com was registered in Jul 1999 through CSC Corporate Domains, Inc.. An established domain carries more trust with email providers and search engines.

  • Registered until Jul 2027

    corza.com is registered until Jul 2027.

Content and conversion

2 to fix79
  • 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.

  • Local business without LocalBusiness data

    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.

  • No opening hours

    The homepage shows no opening hours. If customers visit or call, show when.

  • 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 map or directions link

    There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

  • 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 785 words of copy

    The homepage carries about 785 words of visible text.

5 checks passed
  • 24 calls to action

    The homepage has 24 calls to action, for example “Shop”, “Contact Us” and “Contact”.

  • 2 short forms

    2 short forms (1 field at most) are right on the homepage.

  • Social proof on the page

    Social proof on the homepage: 13 testimonial or review blocks, 1 customer or partner logo, 2 trust badges and “over 1000 students”.

  • Analytics in place

    Analytics detected: Google Tag Manager.

  • Phone number on the homepage

    Your phone number is on the homepage.

Email authentication

85
  • Email authentication score: 85/100

    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.

3 checks passed
  • DMARC policy: quarantine

    DMARC tells receivers to quarantine mail that fails authentication, and sends you reports.

  • SPF in place (~all)

    An SPF record lists your sending servers and marks other mail as suspicious (~all): “v=spf1 include:_spf.createsend.com include:_spf.salesforce.com include:nw027.com ip4:69.90.198.6 ip4:69.90.198.4 ip4:14…”.

  • DKIM signing found

    A DKIM key is published (selector “selector1”, “s1” and “s2”), so receivers can verify mail really came from you.

Privacy and tracking

  • 1 tracker load before any consent

    1

    Before a visitor clicks anything, the page loads Google Tag Manager (measured from a US location before any click). A consent tool (Cookiebot) is installed; check it blocks these until visitors agree where the law requires it.

  • 2 cookies set on arrival

    2

    Opening the homepage sets 2 cookies (measured from a US location before any click).

  • 3 other companies contacted

    Loading the homepage contacts 3 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.

1 checks passed
  • Consent tool: Cookiebot

    A consent management tool (Cookiebot) loads with the page.

Upkeep, stack and company

No signs of neglect in what was checked: the copyright year, CMS and plugin versions, and jQuery.

Stack

CMS
WordPress
Framework
jQuery
Analytics
Google Tag Manager

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

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