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instytutksiazki.pl

https://instytutksiazki.pl· First analyzed 13 May 2026· Updated 13 May 2026
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instytutksiazki.pl
Desktop screenshot of instytutksiazki.pl
Mobile screenshot of instytutksiazki.pl
Mobile

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Hosting Provider

IP Address

46.242.129.91

Site Location

🇵🇱 Polandvia tld

Server Location

🇵🇱 Szczecin, Poland

ASN

AS12824

Organization

home.pl S.A.

Server

Nginx

Nameservers

ns1.makplus.pl.ns2.makplus.pl.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
974 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.1 MB
53 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Instytut Książkiv1.0Custom
by Nowy Kolektyw

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

14 Technologies Detected

SEO Analysis

A82/100
25
5
1
Meta Tags9/15
Content12/12
Headings8/8
Technical25/25
E-E-A-T3/7
Images1/7
Links4/5
URL5/5
Social4/5
Freshness4/4
Mobile4/4
Indexability3/3
I
instytutksiazki.plinstytutksiazki.pl

Instytut Książki

Instytut Książki jest narodową instytucją kultury powołaną do promocji polskiej literatury na świecie oraz popularyzacji książek i czytelnictwa w kraju.

Title Length16 chars

Recommended: 50-60 chars (~92px / 580px)

Description Length152 chars

Recommended: 120-160 chars

Issues (1)

  • Most images missing alt text (13/13) — critical for accessibility and SEO

Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

21/100
Needs Work
6 11 1

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AI & LLM Readiness

D48/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
3/25
Citation
13/25

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
navheader/footer
Text ratio:14%
Words:1,620
Token eff.:Optimal
Sections/1K:4.9
Depth:2/5

Structured Data

3 JSON-LD
WebSiteBreadcrumbList

Citation Readiness

Opening Summary11w
Descriptive Headingsavg 3.4w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (9)
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.
A
87/100
14
Passed
1
Critical
0
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
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
19/100
F
515 mg
CO₂e / view
4.1 MB
Page Weight
15%
Cleaner Than
New Visitor
588 mg
vs
Returning (cached)
294 mg
Annual (10K/mo)
61.8 kg
Emission Segments
Data Center
115 mg
Network
124 mg
Device
276 mg
Resource Breakdown
JavaScript
645.6 KB
Images
1.0 MB
CSS
2.4 MB
HTML
15.9 KB
Other
604 B
Green Hosting Not Verified
home.pl S.A.
8 recommendations
  • Carbon footprint recommendation preview...
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

170d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

15.04.2026

Valid Until

30.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.instytutksiazki.plinstytutksiazki.pl

SHA-256 Fingerprint

B2:17:D3:3C:2F:D2:99:AB:67:71:B9:4A:31:92:ED:CE:16:2D:72:93...

Top Recommendations

Security recommendation preview

HTTP Headers

Developer Console

connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-length
16032
content-type
text/html; charset=UTF-8
date
Wed, 13 May 2026 23:28:49 GMT
link
<https://www.instytutksiazki.pl/wp-json/>; rel="https://api....
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

75

SPF
DKIM
DMARC

MX Records (1)

instytutksiazki-pl.mail.protection.outlook.com

Domain Information

instytutksiazki.pl

Domain Age
22y 3m

Created

13.02.2004

Expires

12.02.2027

Last Updated

12.01.2026

Registrar

home.pl sp. z o.o.

DNSSEC
Not Enabled

Privacy & Compliance

CookieConsent.js

Cookie Consent Banner
CookieConsent.js
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: CookieConsent.js
Data Protection Officer 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
72/100
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.
Viewport
width=device-width, initial-scale=1.0
1 recommendation
  • Mobile compatibility recommendation preview...

Typography & Readability

elza + Sentient-webfont

WCAG AA
75/100
Readability
/30
16/30

40px · LH 1.10

Hierarchy
/20
19/20

2.4x ratio · ✓ H1→H6

WCAG
/25
20/25

5.77:1 min contrast

Performance
/25
20/25

2 fonts · 3 req

Heading Font

elza

Sans96px

Body Font

Sentient-webfont

Sans40px

Contrast Ratio

5.77:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines
96px
h1
72px
h2
40px
h3
26px
h4
40px
p

✅ Excellent readability: 40px body text is ideal for all devices.

⚠️ Tight line spacing (1.10). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.8:1).

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

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

AAdobe FontsBuy on MyFontsFluid Type (rem)Flesch 0

Color Palette

6 unique colors
2.28:1 Fail Light
#ffffff
Background· 25%
#afaba9
Other· 3.5%
#eae7e0
Primary· 52.6%
#64182c
Accent· 11.1%
#002675
Accent· 4.1%
#5c6d90
Secondary· 3.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

24 Resources

18
Scripts
6
Styles
1
Async
2
Defer

Top Script Sources

instytutksiazki.pl(16)googletagmanager.com(1)maps.googleapis.com(1)

Website Identity

Instytut Książki

Instytut Książki jest narodową instytucją kultury powołaną do promocji polskiej literatury na świecie oraz popularyzacji książek i czytelnictwa w kraju.

Location detected: 🇵🇱 Polandvia tld
home.pl sp. z o.o.📧 Microsoft 365pl-PL

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Last analyzed: 13 May 2026 at 23:29

Historical Analysis & Change Tracking