devhub.edu.pl

https://devhub.edu.pl· First analyzed 09 May 2026· Updated 09 May 2026

Export

devhub.edu.pl

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.137.32

Site Location

🇵🇱 Polandvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tess.ns.cloudflare.com.porter.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

792 ms10%

Speed Index

1.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

901 KB

34 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

11 Technologies Detected

UI Components

Swiper Slick Carousel Owl Carousel Fancybox

Libraries

CSS Frameworks

Other

Analytics

CDN

SEO Analysis

B72/100

Meta Tags14/15

Content12/12

Headings8/8

Technical18/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

devhub.edu.pldevhub.edu.pl

DevHub Edu - Polish Developer Education Blog & Resources

Explore DevHub Edu for expert insights, tutorials, and resources on software development and tech education in Poland. Join our community of learners and pro...

Description truncated.

Title Length56 chars

Recommended: 50-60 chars (~336px / 580px)

Description Length168 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (28/49) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

49 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100

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

F32/100

Bot Access

3/25

Machine Read.

16/25

Schema Data

0/25

Citation

13/25

AI Bot Access

2/14 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

nav

Text ratio:4%

Words:1,257

Token eff.:Optimal

Sections/1K:12.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary105w

Descriptive Headingsavg 11w

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...

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.

72/100

Passed

Critical

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

10/15

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

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

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.

54/100

91 mg

CO₂e / view

900.6 KB

Page Weight

80%

Cleaner Than

New Visitor

104 mg

Returning (cached)

52 mg

Annual (10K/mo)

10.9 kg

Emission Segments

Data Center

5 mg

Network

27 mg

Device

60 mg

Resource Breakdown

JavaScript

174.1 KB

Images

28.8 KB

CSS

678.2 KB

HTML

19.5 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

54%Poor

Interactive

HTTPS

WAF

33d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

14.03.2026

Valid Until

12.06.2026

Subject Alternative Names (2)

*.devhub.edu.pldevhub.edu.pl

SHA-256 Fingerprint

90:47:E0:C6:57:AE:89:BE:9A:2C:6D:7A:9C:AE:25:4C:70:1E:7D:17...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 1 Hours(public, max-age=3600)

cf-cache-status

EXPIRED

cf-ray🇺🇸 Washington DC

9f924326af7482e1-IAD

content-encoding

zstd

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

devhub.edu.pl

Domain Age

8 months

Created

08.09.2025

Expires

08.09.2026

Last Updated

14.03.2026

Registrar

Hosting Concepts B.V.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

73/100

Mobile Friendly9 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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Lora

WCAG Partial

66/100

Readability

/30

22/30

16px · LH 1.80

Hierarchy

/20

14/20

2.34x ratio

WCAG

/25

12/25

1:1 min contrast

Performance

/25

18/25

1 font · 6 req

Heading Font

Lora

Serif38px

Body Font

Lora

Serif16px

Contrast Ratio

1:1

9 issues

Reading Comfort

~40 CPL

Narrow lines

38px

30px

20px

17px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFonts

Color Palette

9 unique colors

7.89:1 AAA Light

#ffffff

Background· 52.8%

#535150

Other· 5.7%

#c7ced4

Primary· 5.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)analytics.tech-vikings.com(1)

Website Identity

devhub.edu.pl

242 days old

Location detected: 🇵🇱 Polandvia tld

Hosting Concepts B.V.en

Sponsored

Last analyzed: 09 May 2026 at 17:01

Historical Analysis & Change Tracking