StackOptic
Back to Search
itc.nl favicon

itc.nl

https://itc.nl· First analyzed 04 May 2026· Updated 04 May 2026
Export
itc.nl
Desktop screenshot of itc.nl
Mobile screenshot of itc.nl
Mobile

Sponsored

Hosting Provider

Universiteit Twente

IP Address

130.89.12.12

Site Location

🇳🇱 Netherlandsvia tld

Server Location

🇳🇱 Hengelo, Netherlands

ASN

AS1133

Organization

Universiteit Twente

Server

Nginx

Nameservers

ns1.utwente.nl.ns2.utwente.nl.ns3.utwente.nl.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
680 ms10%
Speed Index
884 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
12 KB
31 requests

Image Optimization

Lazy LoadAVIF
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Universiteit Twente

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

5 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Google Tag Manager

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

C68/100
21
10
0
Meta Tags8/15
Content9/12
Headings8/8
Technical23/25
E-E-A-T3/7
Images3/7
Links2/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
I
itc.nlitc.nl

ITC

Charting today's global challenges with the use of geo-information science and earth observation. Our key focus areas: Resource security, GeoAI, Urban Future...

Description truncated.
Title Length3 chars

Recommended: 50-60 chars (~16px / 580px)

Description Length183 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    2 URLs

    2 sub-sitemaps

    robots.txt

    11 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    23/100
    Needs Work
    7 8 2

    Sponsored

    AI & LLM Readiness

    D48/100
    Bot Access
    20/25
    Machine Read.
    16/25
    Schema Data
    1/25
    Citation
    11/25

    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.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:7%
    Words:584
    Token eff.:Optimal
    Sections/1K:10.3
    Depth:2/5

    Structured Data

    1 JSON-LD
    BreadcrumbList

    Citation Readiness

    Opening Summary62w
    Descriptive Headingsavg 2.7w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    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.
    B
    78/100
    14
    Passed
    1
    Critical
    1
    Warnings
    Images & Alt Text
    10/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    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
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    5/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    70/100
    A+
    2 mg
    CO₂e / view
    12.3 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    2 mg
    vs
    Returning (cached)
    <0.001 g
    Annual (10K/mo)
    180 g
    Emission Segments
    Data Center
    <0.001 g
    Network
    <0.001 g
    Device
    <0.001 g
    Resource Breakdown
    Images
    1.1 KB
    HTML
    11.2 KB
    Green Hosting Not Verified
    Universiteit Twente
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    66%Fair
    Interactive

    HTTPS

    No WAF

    248d

    Certificate Details

    Type

    Organization Validated (OV)

    Certificate Authority

    Hellenic Academic and Research Institutions CA

    Key Algorithm

    RSA (4096 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    08.01.2026

    Valid Until

    08.01.2027

    OCSP Stapling

    Enabled

    Subject Alternative Names (3)

    webhare.utwente.nlwww.utwente.nlutwente.nl

    SHA-256 Fingerprint

    23:21:CB:10:4C:44:4F:0F:54:FE:AE:8A:8C:2F:6D:BD:FD:CF:F8:13...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    content-encoding
    📦 Gzip(gzip)
    content-length
    11198
    content-security-policy
    frame-ancestors 'self' https://webhare.utwente.nl https://po...
    content-type
    text/html; charset=UTF-8
    date
    Mon, 04 May 2026 15:40:09 GMT
    Good Warning Issue

    Email Infrastructure

    Microsoft 365

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    itc-nl.mail.protection.outlook.com

    Domain Information

    itc.nl

    Domain Age
    37y 6m

    Created

    01.11.1988

    Last Updated

    09.01.2019

    Registrar

    Universiteit Twente

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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
    70/100
    Mobile Friendly6 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, viewport-fit=cover
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Arial

    WCAG Partial
    70/100
    Readability
    /30
    14/30

    15px · LH 1.67

    Hierarchy
    /20
    20/20

    3.87x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    19/25

    System fonts

    Heading Font

    Arial

    Sans58px

    Body Font

    Arial

    Sans15px

    Contrast Ratio

    1:1

    5 issues

    Reading Comfort

    ~38 CPL

    Narrow lines
    58px
    h1
    26px
    h2
    15px
    p

    ⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

    ❌ Very complex text: Flesch score 16/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 5 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 3.9x larger than body text.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Flesch 16

    Color Palette

    12 unique colors
    7.41:1 AAA Light
    #ffffff
    Primary· 43%
    #59554e
    Other· 6.5%
    #1e2327
    Text· 10.4%
    #bfcfdf
    Secondary· 7.3%
    #3d2e34
    Secondary· 4.2%
    #b9ad93
    Secondary· 3.9%
    #14121a
    Secondary· 3.8%
    #e6e9e4
    Secondary· 2.3%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    6 Resources

    5
    Scripts
    1
    Styles
    4
    Async
    0
    Defer

    Top Script Sources

    deploy.mopinion.com(1)googletagmanager.com(1)tagging.utwente.nl(1)utwente.becdn.net(1)analytics.silktide.com(1)

    Website Identity

    itc.nl

    info-itc@utwente.nl
    37 years old
    Location detected: 🇳🇱 Netherlandsvia tld
    Universiteit Twente📧 Microsoft 365en-GB

    Social Profiles

    InstagramYouTube

    Sponsored

    Last analyzed: 04 May 2026 at 15:40

    Historical Analysis & Change Tracking