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sibelco.com

https://sibelco.com· First analyzed 16 May 2026· Updated 16 May 2026
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sibelco.com
Desktop screenshot of sibelco.com
Mobile screenshot of sibelco.com
Mobile

Sponsored

Hosting Provider

Microsoft Azure
azure.microsoft.com

IP Address

13.107.246.67

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS8075

Organization

Microsoft Corporation

CDN

CDN

Nameservers

ns53.be.ns53.io.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
857 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
66 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Next.js
Styling
Tailwind CSS
CMS
Kentico
Infrastructure
Hosting
Microsoft Azure
CDN
CDN

Technology Stack

9 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Hotjar

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Twitter Ads

Other

1
Unbounce

SEO Analysis

B71/100
22
8
0
Meta Tags8/15
Content10/12
Headings8/8
Technical20/25
E-E-A-T0/7
Images7/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile3/4
Indexability3/3
S
sibelco.comsibelco.com

home

Our company sources, transforms and distributes specialty industrial minerals – particularly silica, clays, feldspathics and olivine – and is a leader in gla...

Description truncated.
Title Length4 chars

Recommended: 50-60 chars (~27px / 580px)

Description Length173 chars

Recommended: 120-160 chars

Issues (0)

    8 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    2 URLs

    2 sub-sitemaps

    robots.txt

    6 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    11/100
    Poor
    3 12 2

    This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

    Sponsored

    AI & LLM Readiness

    F33/100
    Bot Access
    20/25
    Machine Read.
    1/25
    Schema Data
    3/25
    Citation
    9/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:5%
    Words:3,288
    Token eff.:Poor Structure

    Structured Data

    1 JSON-LD
    WebSiteSearchAction

    Citation Readiness

    Opening Summary151w
    Descriptive Headingsavg 3w
    Canonical URL
    Open Graph2/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    C
    69/100
    12
    Passed
    2
    Critical
    3
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    2/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    11/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    4/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    3 recommendations
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    75/100
    B
    124 mg
    CO₂e / view
    1.2 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    142 mg
    vs
    Returning (cached)
    71 mg
    Annual (10K/mo)
    14.9 kg
    Emission Segments
    Data Center
    6 mg
    Network
    36 mg
    Device
    81 mg
    Resource Breakdown
    JavaScript
    316.3 KB
    Images
    116.0 KB
    CSS
    14.9 KB
    Fonts
    53.7 KB
    HTML
    45.3 KB
    Other
    680.7 KB
    Green Hosting Verified
    Microsoft Azure
    Provider Match
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    159d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    GlobalSign nv-sa

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    06.04.2026

    Valid Until

    22.10.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.sibelco.comsibelco.com

    SHA-256 Fingerprint

    5E:C9:02:14:FF:A9:E9:27:A5:CD:F7:14:27:AA:BC:AD:5D:10:BB:C8...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    cache-control
    ⚪ Custom(s-maxage=300, stale-while-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Sat, 16 May 2026 00:05:44 GMT
    etag
    "kjkkk5hkcy585s"
    vary
    Accept-Encoding
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    sibelco-com.mail.protection.outlook.com

    Domain Information

    sibelco.com

    Domain Age
    28y 7m

    Created

    01.10.1997

    Expires

    30.09.2026

    Last Updated

    01.10.2025

    Registrar

    Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Legitimate interest basis mentioned

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    B
    77/100
    Mobile Friendly24 breakpoints
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    __Fira_Sans_1bd5c5

    WCAG Partial
    76/100
    Readability
    /30
    22/30

    20px · LH 2.00

    Hierarchy
    /20
    19/20

    3x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    18/25

    1 font · 4 req

    Heading Font

    __Fira_Sans_1bd5c5

    Sans60px

    Body Font

    __Fira_Sans_1bd5c5

    Sans20px

    Contrast Ratio

    1:1

    4 issues

    Reading Comfort

    ~36 CPL

    Narrow lines
    60px
    h1
    100px
    h2
    30px
    h3
    20px
    h4
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

    ⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

    ❌ Very complex text: Flesch score 22/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 3.0x larger than body text.

    GGoogle FontsBuy on MyFontsFlesch 23

    Color Palette

    8 unique colors
    3.15:1 AA Large Light
    #ffffff
    Background· 67.00000000000001%
    #90909f
    Other· 3%
    #292736
    Primary· 12.2%
    #484d5c
    Secondary· 2.3%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    27 Resources

    20
    Scripts
    7
    Styles
    1
    Async
    19
    Defer

    Top Script Sources

    local(19)consent.cookiebot.com(1)

    Website Identity

    sibelco.com

    28 years old
    Location detected: 🇨🇦 Canadavia ip
    Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA📧 Microsoft 365en

    Sponsored

    Last analyzed: 16 May 2026 at 00:06

    Historical Analysis & Change Tracking