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kas.gov.pl

https://kas.gov.pl· First analyzed 06 May 2026· Updated 06 May 2026
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kas.gov.pl
Desktop screenshot of kas.gov.pl
Mobile screenshot of kas.gov.pl
Mobile

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Hosting Provider

Incapsula Inc

IP Address

45.60.74.29

Site Location

🇵🇱 Polandvia tld

Server Location

🇺🇸 Ashburn, United States

ASN

AS19551

Organization

Incapsula Inc

CDN

Imperva

WAF

Imperva

Nameservers

ns1.a0.impervasecuredns.net.ns1.a1.impervasecuredns.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
748 ms10%
Speed Index
972 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2 MB
76 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Incapsula Inc
CDN
Imperva

Technology Stack

8 Technologies Detected

Libraries

2
jQueryv3.7.1
jQuery UI

Analytics

2
Google Analytics
Matomo

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

SEO Analysis

C63/100
17
6
1
Meta Tags9/15
Content11/12
Headings6/8
Technical13/25
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
K
kas.gov.plkas.gov.pl

Krajowa Administracja Skarbowa - Portal gov.pl

No description available for this page.

Title Length46 chars

Recommended: 50-60 chars (~282px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing meta description — important for click-through rates in SERPs

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

11/100
Poor
3 12 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

D48/100
Bot Access
20/25
Machine Read.
19/25
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
navheader/footer
Text ratio:12%
Words:846
Token eff.:Optimal
Sections/1K:13
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary242w
Descriptive Headingsavg 2.4w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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
86/100
13
Passed
2
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
41/100
D
249 mg
CO₂e / view
2.0 MB
Page Weight
50%
Cleaner Than
New Visitor
284 mg
vs
Returning (cached)
142 mg
Annual (10K/mo)
29.9 kg
Emission Segments
Data Center
56 mg
Network
60 mg
Device
134 mg
Resource Breakdown
JavaScript
258.2 KB
Images
1.4 MB
CSS
271.1 KB
HTML
10.2 KB
Green Hosting Not Verified
Incapsula Inc
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

71%Good
Interactive

HTTPS

WAF

238d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Asseco Data Systems S.A.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

31.12.2025

Valid Until

31.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

gov.plwww.gov.pl

SHA-256 Fingerprint

8E:91:4D:22:68:14:BF:1D:6C:36:E3:28:2B:46:41:8D:CE:7E:A1:90...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 600s(max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
10193
content-type
text/html;charset=UTF-8
date
Wed, 06 May 2026 21:49:35 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (4)

mx6.mf.gov.pl
mx7.mf.gov.pl
mx4.mf.gov.pl
mx5.mf.gov.pl

Domain Information

kas.gov.pl

Domain Age
10y 3m

Created

11.01.2016

Expires

11.01.2027

Last Updated

07.01.2025

Registrar

NASK

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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
71/100
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
initial-scale=1.0, width=device-width
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG AAA
67/100
Readability
/30
22/30

16px · LH 1.50

Hierarchy
/20
15/20

1x ratio · ✓ H1→H6

WCAG
/25
17/25

7.64:1 min contrast

Performance
/25
13/25

1 font · 4 req

Heading Font

Open Sans

Sans16px

Body Font

Open Sans

Sans16px

Contrast Ratio

7.64:1

WCAG AAA (≥7:1)

Reading Comfort

Single Font Family

left aligned
16px
h1
24px
h2
16px
h3
16px
p
Minor Second
Scale

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

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

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.6:1).

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

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

Buy on MyFontsFlesch 0

Color Palette

7 unique colors
2.31:1 Fail Light
#ffffff
Background· 57.699999999999996%
#a7abad
Other· 6.7%
#162550
Primary· 6.7%
#c6c1ba
Secondary· 5.8%
#647082
Secondary· 4.1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

25 Resources

18
Scripts
7
Styles
2
Async
0
Defer

Top Script Sources

local(16)matomo.gov.pl(1)googletagmanager.com(1)

Website Identity

kas.gov.pl

10 years old

Świętokrzyska 1200-916 WarszawaNIP 5260250274Regon 000002217

Location detected: 🇵🇱 Polandvia tld
NASKpl-PL

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Last analyzed: 06 May 2026 at 21:48

Historical Analysis & Change Tracking