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calixsystems.co.uk website review
Visit site (opens in a new tab)Reviewed 12 November 202613 issues · 71 checks
This review found 13 issues worth fixing on calixsystems.co.uk, 2 of them high impact, across 71 checks. The most urgent: links must have discernible text (1 element). 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
91A- #1,389 of 109,350 reviewed websitesbeats 98%
- #633 of 61,859 online storesbeats 98%
- #606 of 56,401 Shopify storesbeats 98%
Closest competitors among Shopify stores
Compare side by sideShow as table
| Date | Real-visitor load time (LCP) |
|---|---|
| Sep 26, 2026 | 1.2 s |
| Oct 3, 2026 | 1.2 s |
| Oct 10, 2026 | 1.3 s |
| Oct 17, 2026 | 1.3 s |
| Oct 24, 2026 | 1.3 s |
| Oct 31, 2026 | 1.2 s |
| Nov 7, 2026 | 1.2 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
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
Speed
Render-blocking requests
450 ms5 files block the first paint until they finish downloading. Deferring or inlining them could save about 450 ms.
2 third-party services on the page
2 third-party services load with your homepage (Shopify and myshopify.com), adding 182 KiB and 90 ms of main-thread time.
Improve image delivery
9 KiB1 image could be 9 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.
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.
Use efficient cache lifetimes
4 KiB2 files are served with short cache lifetimes, so returning visitors download them again (4 KiB).
3 checks passed
Mobile performance score: 96
96/100Your mobile performance score is 96. That is in Google's “good” band (90 and up).
Main-thread work: 1.3 s
A phone's processor spends 1.3 s on main-thread work while loading, 455 ms of it running JavaScript. That is comfortably low.
Server response: 6 ms
6 msYour server sent the HTML in 6 ms, well inside Google's 600 ms guideline.
Core Web Vitals
Largest Contentful Paint: 2.8 s
2.8 sYour largest element takes 2.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.
Largest content (LCP) held steady for real visitors
-1%Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 1.2 s to 1.2 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).
11 checks passed
Passes Core Web Vitals for real visitors
Real Chrome users on phones pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)).
Real-user LCP: 1.1 s
1.1 sReal visitors wait 1.1 s for the largest content to appear (75th percentile). Good is under 2.5 s.
Real-user INP: 86 ms
86 msReal visitors wait 86 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.
Real-user FCP: 0.8 s
0.8 sReal visitors see the first content after 0.8 s (75th percentile). Good is under 1.8 s.
Real-user TTFB: 548 ms
548 msReal visitors wait 548 ms for your server to start answering (75th percentile). Good is under 800 ms.
Time to Interactive: 2.8 s
2.8 sThe page is fully interactive after 2.8 s.
First Contentful Paint: 1.1 s
1.1 sThe first text or image appears after 1.1 s, inside the 1.8 s “good” threshold.
Cumulative Layout Shift: 0
0The layout barely moves while loading (CLS 0, good is under 0.1).
Speed Index: 1.8 s
1.8 sVisually, the page fills in at 1.8 s (Speed Index), inside the 3.4 s “good” threshold.
Total Blocking Time: 0 ms
0 msScripts block the page for only 0 ms while loading. Good is under 200 ms.
Images and page weight
About 0.4 g of CO₂ per visit
0.41 gBy the Sustainable Web Design model, a visit to your homepage emits about 0.41 g of CO₂e: 49.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.
4 checks passed
Page weight: 1.5 MB in 220 requests
1.5 MBYour homepage downloads 1.5 MB in 220 requests on a phone: other files 882 KiB (132), scripts 296 KiB (53) and images 184 KiB (9). That is a lean page.
Images use modern formats
Every sizeable image is WebP, AVIF or SVG.
Images load when needed
Images below the first screen wait until the visitor scrolls to them.
Images are sized for phones
No image is downloaded at more than three times the size it is drawn on a phone.
Accessibility
Links must have discernible text (1 element)
Links must have discernible text: 1 element on the page fails this check, rated serious by axe-core.
Alternative text of images should not be repeated as text (6 elements)
Alternative text of images should not be repeated as text: 6 elements on the page fail this check, rated minor by axe-core.
2 checks passed
Every image has alt text
All 14 images in the HTML carry an alt attribute.
44 automated accessibility rules passed
axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 46 WCAG 2.2 A/AA and best-practice rules on the phone render: 44 passed and 2 failed. 2 mores need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.
SEO
Meta description is long (299 characters)
Your meta description is 299 characters; Google truncates after about 160, so the end of your pitch is cut.
One H1 headline
Your <h1> is empty.
65 internal links, 3 external
The homepage links to 65 pages on calixsystems.co.uk and 3 external pages.
6 checks passed
Title: 39 characters
Your title is a healthy 39 characters: “Calix UK - Engine Heaters & Accessories”.
Canonical URL set
The canonical URL is https://www.calixsystems.co.uk/.
Structured data in place
Structured data found: Organization and WebSite.
Open Graph tags complete
Open Graph tags are complete, so shared links show a title, description and image.
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://www.calixsystems.co.uk/sitemap.xml.
AI search readiness
4 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 (796 words), so crawlers that don't run JavaScript still read it.
llms.txt published
The site publishes https://www.calixsystems.co.uk/llms.txt (6 KiB, 8 links), a plain-text guide to the site for AI tools.
Other pages
15 internal pages checked
We fetched 15 pages linked from your homepage (of 26 found) and read each the way a search engine does.
7 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.
Every page has a meta description
All 15 pages that loaded have a meta description.
Titles are unique
Every page we checked has its own title.
Every page has an H1
Each page we checked has a main headline.
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
2 small tap targets
2 of 10 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.
2 checks passed
No console errors
No JavaScript errors were logged while the page loaded on a phone.
Mobile viewport set
The page declares a mobile viewport.
Content and conversion
No social proof
No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.
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 phone number on the homepage
A local customer looking to call finds no phone number on the homepage. Add one, ideally as a tap-to-call link.
No analytics detected
No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.
No direct contact details
No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.
No opening hours
The homepage shows no opening hours. If customers visit or call, show when.
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 312 words of copy
The homepage carries about 312 words of visible text.
3 checks passed
Clear next step on the first screen
On a phone, the first screen shows a clear next step: “Shop all”.
3 calls to action
The homepage has 3 calls to action, for example “Contact”, “Shop all” and “Contact information”.
4 short forms
4 short forms (1 field at most) are right on the homepage.
Privacy and tracking
3 trackers load before any consent
3Before a visitor clicks anything, the page loads Google Ads, Google Analytics and Google Tag Manager (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.
10 cookies set on arrival
10Opening the homepage sets 10 cookies (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.
9 other companies contacted
Loading the homepage contacts 9 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 calixsystems.co.uk, because details like these could help someone attack a site. Every review keeps them private, whatever they found.
Apps on your store
Your storefront loads 1 app. It is code from another company running for your shoppers.
Apps your storefront loads
Sami Wholesale
Apps found in the homepage's code. Apps that only run in checkout or the admin aren't seen, and a headless storefront shows none. App data from programmable.info
Upkeep, stack and company
Stack
- E-commerce
- Shopify
- Hosting
- Shopify
Upkeep, stack, hiring and company data from programmable.info
Go beyond the website
What your $25 Growth Playbook adds
This review found 13 issues on calixsystems.co.uk, including 2 speed issues, 2 SEO issues and 5 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.