czerwoneiczarne.pl

https://czerwoneiczarne.pl· First analyzed 21 May 2026· Updated 21 May 2026

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czerwoneiczarne.pl

Mobile

Sponsored

Hosting Provider

Zenbox sp. z o.o

IP Address

2.57.137.11

Site Location

🇵🇱 Polandvia tld

Server Location

🇵🇱 Częstochowa, Poland

ASN

AS31229

Organization

Zenbox sp. z o.o

Server

LiteSpeed

Nameservers

ns1.zenbox.pl.ns2.zenbox.pl.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.6 MB

103 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv7.0

cms

Belletristv1.3Custom

by Edge Themes

View Theme

Technology Stack

20 Technologies Detected

Plugins

Qi Blocks Belletrist Core

Qi Addons For Elementor

Libraries

Underscore.js Animate.css

Icon Libraries

Font Awesome Material Icons Ionicons

Other

UI Components

Other

CSS Frameworks

Fonts

Web Servers

Customer Support

SEO Analysis

C61/100

Meta Tags7/15

Content10/12

Headings6/8

Technical19/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

czerwoneiczarne.plczerwoneiczarne.pl

Wydawnictwo Czerwone i Czarne – Wydawnictwo książek dobrych i pięknych

No description available for this page.

Title Length70 chars

Recommended: 50-60 chars (~440px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (29/38) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

7 sub-sitemaps

robots.txt

Local SEO

Local Search Readiness

7/100

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

D44/100

Bot Access

20/25

Machine Read.

13/25

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

nav

Text ratio:2%

Words:502

Token eff.:Optimal

Depth:1/5

Structured Data

Microdata

Citation Readiness

Opening Summary43w

Descriptive Headingsavg 7.2w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

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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.

88/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

15/20

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

11/15

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

ARIA & Roles

12/15

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.

33/100

574 mg

CO₂e / view

5.6 MB

Page Weight

Cleaner Than

New Visitor

656 mg

Returning (cached)

328 mg

Annual (10K/mo)

68.9 kg

Emission Segments

Data Center

28 mg

Network

169 mg

Device

377 mg

Resource Breakdown

JavaScript

642.6 KB

Images

4.7 MB

CSS

194.1 KB

Fonts

8.9 KB

HTML

26.6 KB

Green Hosting Verified

e24cloud by Beyond.pl Sp. z o.o.

GWF Verified

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

59d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

21.04.2026

Valid Until

20.07.2026

Subject Alternative Names (2)

czerwoneiczarne.plwww.czerwoneiczarne.pl

SHA-256 Fingerprint

67:70:AB:C3:91:BB:88:89:CE:52:53:3B:71:03:C2:00:05:E4:38:A9...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 23:00:34 GMT

link

<https://czerwoneiczarne.pl/wp-json/>; rel="https://api.w.or...

server

LiteSpeed

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx1.zenbox.pl

mx3.zenbox.pl

mx2.zenbox.pl

Domain Information

czerwoneiczarne.pl

Domain Age

16y 6m

Created

08.11.2009

Expires

08.11.2026

Last Updated

03.11.2025

Registrar

nazwa.pl sp. z o.o.

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.

78/100

Mobile Friendly3 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, user-scalable=yes

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Playfair Display + Open Sans

WCAG Partial

62/100

Readability

/30

17/30

15px · LH 1.32

Hierarchy

/20

15/20

4x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

14/25

3 fonts · 4 req

Heading Font

Playfair Display

Serif60px

Body Font

Open Sans

Sans15px

Contrast Ratio

1:1

13 issues

Reading Comfort

~32 CPL

Narrow lines

60px

40px

30px

24px

15px

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

⚠️ Tight line spacing (1.32). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 28/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 4.0x larger than body text.

GGoogle Fonts Buy on MyFontsFlesch 28

Color Palette

5 unique colors

Light

#ffffff

Background· 26.300000000000004%

#eae9e4

Primary· 53.199999999999996%

#3c1616

Secondary· 7.3%

#816a69

Secondary· 6.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

czerwoneiczarne.pl(19)maps.googleapis.com(1)

Website Identity

czerwoneiczarne.pl

16 years old

Location detected: 🇵🇱 Polandvia tld

nazwa.pl sp. z o.o.pl-PL

Social Profiles

Facebook YouTube

Sponsored

Last analyzed: 21 May 2026 at 23:00

Historical Analysis & Change Tracking