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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.
- Homepage
- Phone render
- Links and pages
- Google PageSpeed
Google PageSpeed Insights (opens in a new tab), mobile
Site score
86BClosest competitors among reviewed websites
Compare side by sideShow as table
| Date | Real-visitor load time (LCP) |
|---|---|
| May 9, 2026 | 2.4 s |
| May 16, 2026 | 2.4 s |
| May 23, 2026 | 2.5 s |
| May 30, 2026 | 2.4 s |
| Jun 6, 2026 | 2.3 s |
| Jun 13, 2026 | 2.3 s |
| Jun 20, 2026 | 2.4 s |
| Jun 27, 2026 | 2.5 s |
| Jul 4, 2026 | 2.6 s |
| Jul 11, 2026 | 2.8 s |
| Jul 18, 2026 | 3.0 s |
| Jul 25, 2026 | 3.0 s |
| Aug 1, 2026 | 2.9 s |
| Aug 8, 2026 | 2.8 s |
| Aug 15, 2026 | 2.7 s |
| Aug 22, 2026 | 2.6 s |
| Aug 29, 2026 | 2.7 s |
| Sep 5, 2026 | 2.8 s |
| Sep 12, 2026 | 2.9 s |
| Sep 19, 2026 | 3.1 s |
| Sep 26, 2026 | 3.0 s |
| Oct 3, 2026 | 3.0 s |
| Oct 10, 2026 | 3.1 s |
| Oct 17, 2026 | 2.9 s |
| Oct 24, 2026 | 2.9 s |
Show as table
| Date | Real-visitor tap response (INP) |
|---|---|
| May 9, 2026 | 89 ms |
| May 16, 2026 | 92 ms |
| May 23, 2026 | 95 ms |
| May 30, 2026 | 101 ms |
| Jun 6, 2026 | 97 ms |
| Jun 13, 2026 | 88 ms |
| Jun 20, 2026 | 89 ms |
| Jun 27, 2026 | 88 ms |
| Jul 4, 2026 | 91 ms |
| Jul 11, 2026 | 89 ms |
| Jul 18, 2026 | 89 ms |
| Jul 25, 2026 | 91 ms |
| Aug 1, 2026 | 89 ms |
| Aug 8, 2026 | 96 ms |
| Aug 15, 2026 | 96 ms |
| Aug 22, 2026 | 91 ms |
| Aug 29, 2026 | 88 ms |
| Sep 5, 2026 | 85 ms |
| Sep 12, 2026 | 85 ms |
| Sep 19, 2026 | 94 ms |
| Sep 26, 2026 | 97 ms |
| Oct 3, 2026 | 98 ms |
| Oct 10, 2026 | 96 ms |
| Oct 17, 2026 | 91 ms |
| Oct 24, 2026 | 87 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
How it loaded on a phone
0.4 s
0.8 s
1.1 s
1.5 s
1.9 s
2.3 s
2.6 s
3.0 s
corza.com does not allow embedding, so this is Google's rendering of the page.
Speed
Render-blocking requests
1.3 s8 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 MB20 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 msThe 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 msReduce initial server response time. Google estimates savings of 579 ms on a phone.
Reduce unused CSS
450 ms · 87 KiBAbout 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 KiBAbout 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 msYour 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 KiB1 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 KiB5 KiB could be saved by minifying CSS.
2 checks passed
Mobile performance score: 91
91/100Your 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
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 sReal 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 sReal 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 sReal 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 sThe page becomes fully interactive after 6.8 s. Good is under 3.8 s.
Largest Contentful Paint: 3.2 s
3.2 sYour 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 sThe 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 sVisually, 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 msReal visitors wait 88 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.
Real-user CLS: 0.00
0.00For real visitors the layout shifts by 0.00 (75th percentile). Good is under 0.1.
Cumulative Layout Shift: 0.002
0.002The layout barely moves while loading (CLS 0.002, good is under 0.1).
Total Blocking Time: 38 ms
38 msScripts block the page for only 38 ms while loading. Good is under 200 ms.
Images and page weight
Page weight: 5.1 MB in 63 requests
5.1 MBYour 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 KiB7 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 gBy 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
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
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
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
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
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
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 yearscorza.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
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
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
1Before 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
2Opening 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
Go beyond the website
What your $25 Growth Playbook adds
This review found 37 issues on corza.com, including 18 speed issues, 6 SEO issues and 2 conversion gaps. That is the website alone. The full Growth Playbook pairs these findings with what your customers say in public reviews and communities and what your closest competitors do better, then turns everything into at least 20 prioritised ideas, each with the evidence behind it, a step-by-step playbook, a metric and an owner.
- 28 research agents read your site, reviews, competitors, communities and public filings
- Customer review mining (G2, Capterra, Trustpilot and more) and voice-of-pain analysis in your buyers’ own words
- Competitor intelligence with battlecards for your closest rivals
- Ideal customer profile, buyer segments and buying-stage funnel
- Ranked channels, outreach sequences and content angles
- Live Reddit threads where buyers ask for what you sell, with draft replies
- Earned media and PR openings
- At least 20 ideas with evidence, a step-by-step playbook, metric, owner, effort and impact, grouped into this week, this quarter, big bets and wildcards, plus a 30/60/90-day roadmap
- PDF, Markdown, CSV, Notion and Linear exports, and a shareable page your team can track progress on
- Refresh the playbook later to see what changed
14-day money-back guarantee: not happy for any reason, email us within 14 days and we refund in full.