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oszk.hu

https://oszk.hu· First analyzed 24 Apr 2026· Updated 24 Apr 2026
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oszk.hu
Desktop screenshot of oszk.hu
Mobile screenshot of oszk.hu
Mobile

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Hosting Provider

SzerverPlex.hu KFT

IP Address

37.17.172.81

Site Location

🇭🇺 Hungaryvia tld

Server Location

🇭🇺 Budapest, Hungary

ASN

AS61998

Organization

SzerverPlex.hu KFT

CDN

CDN

Nameservers

athena.ns.cloudflare.com.bart.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
504 ms10%
Speed Index
655 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
973 KB
112 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Drupal

Technology Stack

6 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Libraries

1
jQuery

UI Components

1
Lightbox

CSS Frameworks

1
Tailwind CSS

SEO Analysis

D50/100
14
9
2
Meta Tags4/15
Content11/12
Headings8/8
Technical10/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile2/4
Indexability3/3
O
oszk.huoszk.hu

Országos Széchényi Könyvtár

No description available for this page.

Title Length27 chars

Recommended: 50-60 chars (~168px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

40 rules

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

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

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AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:8%
Words:547
Token eff.:Optimal
Sections/1K:1.8

Structured Data

No Schema

Citation Readiness

Opening Summary23w
Descriptive Headingsavg 15w
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

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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.
D
59/100
8
Passed
4
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
14/20
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
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.
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.
35/100
B
120 mg
CO₂e / view
973.3 KB
Page Weight
70%
Cleaner Than
New Visitor
138 mg
vs
Returning (cached)
69 mg
Annual (10K/mo)
14.4 kg
Emission Segments
Data Center
27 mg
Network
29 mg
Device
65 mg
Resource Breakdown
JavaScript
76.1 KB
Images
842.5 KB
CSS
41.4 KB
HTML
13.3 KB
Green Hosting Not Verified
SzerverPlex.hu KFT
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

66%Fair
Interactive

HTTPS

No WAF

38d

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

Valid From

03.03.2026

Valid Until

01.06.2026

Subject Alternative Names (2)

*.oszk.huoszk.hu

SHA-256 Fingerprint

8D:CB:9D:A9:B7:03:8B:9F:16:F9:08:4B:48:8C:48:97:50:73:47:42...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
age
0
cache-control
🔴 No Cache(store, no-cache, must-revalidate, post-check=0, pre-check=0)
content-encoding
📦 Gzip(gzip)
content-length
13361
content-type
text/html; charset=utf-8
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

93

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

oszk-hu.mail.protection.outlook.com

Domain Information

oszk.hu

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected

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.
F
34/100
Not Mobile Friendly1 breakpoint
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.
4 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Arial

WCAG Partial
62/100
Readability
/30
16/30

12px · LH 1.40

Hierarchy
/20
9/20

1.33x ratio

WCAG
/25
17/25

3.86:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Arial

Sans16px

Body Font

Arial

Sans12px

Contrast Ratio

3.86:1

13 issues

Reading Comfort

~63 CPL

Optimal (45–75)
16px
h1
13px
h2
12px
p

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~63 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 3.9:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Color Palette

6 unique colors
Light
#f6f6f6
Background· 62.800000000000004%
#12204f
Primary· 13%
#a0817e
Secondary· 6.7%
#566878
Secondary· 5.7%
#eee9e3
Secondary· 4.9%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

1
Facebook SDKFree

Social widgets and sharing tools

3

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

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Scripts & Styles

30 Resources

20
Scripts
10
Styles
3
Async
1
Defer

Top Script Sources

local(16)connect.facebook.net(2)gthu.hit.gemius.pl(1)ssl.google-analytics.com(1)

Website Identity

oszk.hu

Location detected: 🇭🇺 Hungaryvia tld
📧 Microsoft 365hu

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Last analyzed: 24 Apr 2026 at 01:24

Historical Analysis & Change Tracking