openml.org

https://openml.org· First analyzed 21 May 2026· Updated 21 May 2026

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openml.org

Mobile

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Hosting Provider

Technische Universiteit Eindhoven

IP Address

131.155.10.137

Site Location

🇳🇱 Netherlandsvia ip

Server Location

🇳🇱 Eindhoven, Netherlands

ASN

AS1161

Organization

Technische Universiteit Eindhoven

Server

Apache

Nameservers

ns01.hostnet.nl.ns02.hostnet.nl.

Performance

Core Web Vitals

Weight

First Contentful Paint

957 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

28 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Progressive Web App

Web ManifestTheme Color

Technology Stack

6 Technologies Detected

CSS Frameworks

Tailwind CSS

Material UI

Icon Libraries

Font Awesome Material Icons

Fonts

Google Fonts

Web Servers

Apachev2.4.41

SEO Analysis

D54/100

Meta Tags8/15

Content9/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

openml.orgopenml.org

OpenML

OpenML is an open platform for sharing datasets, algorithms, and experiments - to learn how to learn better, together.

Title Length6 chars

Recommended: 50-60 chars (~42px / 580px)

Description Length118 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

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Crawlability

Sitemap

robots.txt

3 rules

Local SEO

Local Search Readiness

8/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

D42/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

code blocks

Text ratio:2%

Words:636

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary24w

Descriptive Headingsavg 2.2w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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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.

65/100

Passed

Critical

Warnings

Images & Alt Text

18/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

9/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

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

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

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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.

45/100

174 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

198 mg

Returning (cached)

99 mg

Annual (10K/mo)

20.8 kg

Emission Segments

Data Center

39 mg

Network

42 mg

Device

93 mg

Resource Breakdown

JavaScript

1014.4 KB

Images

47.5 KB

CSS

337.4 KB

Fonts

705 B

HTML

836 B

Other

2.4 KB

Green Hosting Not Verified

Technische Universiteit Eindhoven

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

42d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

03.04.2026

Valid Until

02.07.2026

Subject Alternative Names (9)

api.openml.orgblog.openml.orgdata.openml.orgdocs.openml.orges.openml.orgnew.openml.orgopenml.orgtest.openml.org+1 more

SHA-256 Fingerprint

EA:A7:77:0D:FC:AD:E4:45:73:C3:95:B1:EE:B2:6E:15:2E:92:05:58...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-credentials

true

access-control-allow-origin

http://127.0.0.1:3000

cache-control

🔴 No Cache(no-cache)

connection

Keep-Alive

content-disposition

inline; filename=index.html

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mailfilter.hostnet.nl

Domain Information

openml.org

Domain Age

13y 10m

Created

13.07.2012

Expires

13.07.2026

Last Updated

19.06.2025

Registrar

Tucows Domains Inc.

DNSSEC

Not Enabled

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.

71/100

Mobile Friendly

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,shrink-to-fit=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG Partial

61/100

Readability

/30

19/30

15px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

16/25

3.51:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Roboto

Sans

Body Font

Roboto

Sans15px

Contrast Ratio

3.51:1

6 issues

Reading Comfort

~37 CPL

Narrow lines

18px

20px

15px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 31/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 3.5:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

GGoogle FontsFlesch 31

Color Palette

11 unique colors

2.3:1 Fail Light

#ffffff

Background· 18.2%

#abac9e

Secondary· 6.2%

#000000

Primary· 0%

#1c2431

Secondary· 17.499999999999996%

#d73c41

Accent· 10.5%

#a76a5a

Secondary· 8.8%

#64b96f

Secondary· 7.2%

#c76256

Secondary· 6.8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

Website Identity

openml.org

13 years old

Location detected: 🇳🇱 Netherlandsvia ip

Tucows Domains Inc.en

Social Profiles

GitHub

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Last analyzed: 21 May 2026 at 06:12

Historical Analysis & Change Tracking