colosseum.eu

https://colosseum.eu· First analyzed 17 May 2026· Updated 17 May 2026

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colosseum.eu

Mobile

Sponsored

Hosting Provider

JON Cust BK Dynamic

IP Address

188.75.165.88

Site Location

🇨🇿 Czech Republicvia phone

Server Location

🇨🇿 Prague, Czechia

ASN

AS196735

Organization

JON Cust BK Dynamic

Server

Nginx

Nameservers

ns1.regzone.de.ns1.regzone.info.ns1.regzone.cz.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

655 ms10%

Speed Index

852 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

22.6 MB

101 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.9.4

Infrastructure

Hosting

JON Cust BK Dynamic

Technology Stack

21 Technologies Detected

Plugins

Contact Form 7

Honeypot

Wp Contact Form 7 Spam Blocker

Wp Show More Complianz Gdpr

Libraries

CSS Frameworks

Other

UI Components

Icon Libraries

Fonts

Analytics

Web Servers

Languages

Customer Support

Security

SEO Analysis

B78/100

Meta Tags13/15

Content10/12

Headings3/8

Technical24/25

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

colosseum.eucolosseum.eu

Domů - PERFECT SYSTEM | Colosseum | Rezervační software

Jsme rodinná firma, která se stala předním poskytovatelem IT řešení pro prodej vstupenek v České republice. Zajišťujeme vývoj, dodávku a podporu vstupenkovéh...

Description truncated.

Title Length55 chars

Recommended: 50-60 chars (~345px / 580px)

Description Length210 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (16/30) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

9 URLs

9 sub-sitemaps

robots.txt

5 rules

Allows all crawlers

Local SEO

Local Search Readiness

24/100

Needs Work

7 10

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

8/25

Citation

14/25

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

data-nosnippet

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:2%

Words:723

Token eff.:Optimal

Sections/1K:4.1

Depth:1/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary227w

Descriptive Headingsavg 5.7w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

AI readiness recommendation preview...

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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.

68/100

Passed

Critical

Warnings

Images & Alt Text

13/20

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

Semantic Structure

13/20

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

8/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 recommendations

•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.

29/100

2.86 g

CO₂e / view

22.6 MB

Page Weight

Cleaner Than

New Visitor

3.27 g

Returning (cached)

1.64 g

Annual (10K/mo)

343.4 kg

Emission Segments

Data Center

639 mg

Network

687 mg

Device

1.54 g

Resource Breakdown

JavaScript

308.1 KB

Images

21.0 MB

CSS

1.2 MB

Fonts

1.9 KB

HTML

52.0 KB

Green Hosting Not Verified

JON Cust BK Dynamic

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

56%Poor

Interactive

HTTPS

No WAF

74d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.05.2026

Valid Until

30.07.2026

Subject Alternative Names (2)

*.colosseum.eucolosseum.eu

SHA-256 Fingerprint

9D:15:36:82:5B:8C:A8:5E:EA:DA:D5:77:50:8E:E0:95:05:19:2A:43...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers

DNT,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since...

access-control-allow-methods

GET, POST, OPTIONS

access-control-allow-origin

access-control-expose-headers

Content-Length,Content-Range

content-encoding

📦 Gzip(gzip)

content-length

52988

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

colosseum-eu.mail.protection.outlook.com

Domain Information

colosseum.eu

DNSSEC

Not Enabled

Privacy & Compliance

Complianz

Cookie Consent Banner

Complianz

GDPR Indicators

Cookie consent banner detected

CMP: Complianz

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.

73/100

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

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Montserrat + Nunito Sans

WCAG Partial

56/100

Readability

/30

18/30

16px · LH 1.88

Hierarchy

/20

5/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

16/25

2 fonts · 8 req

Heading Font

Montserrat

Sans

Body Font

Nunito Sans

Sans16px

Contrast Ratio

1:1

15 issues

Reading Comfort

~33 CPL

Narrow lines

72px

24px

30px

16px

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

⚠️ Wide line spacing (1.88). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 15 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

✅ Lean font stack: 2 font families keeps load times fast.

GGoogle Fonts Buy on MyFonts

Color Palette

11 unique colors

17.83:1 AAA Light

#ffffff

Background· 21.700000000000003%

#1a1716

Text· 5.6%

#3f3531

Primary· 6.9%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

ComplianzSMB

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

colosseum.eu(19)gstatic.com(1)

Website Identity

PERFECT SYSTEM

Organization

Jsme rodinná firma, která se stala předním poskytovatelem IT řešení pro prodej vstupenek v České republice. Zajišťujeme vývoj, dodávku a podporu vstupenkového systému Colosseum a jednoduše vše okolo ticketingu.

[email protected]

+420%20277%20012%20600

colosseum.eu/

Location detected: 🇨🇿 Czech Republicvia phone

📧 Microsoft 365cs

Social Profiles

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Last analyzed: 17 May 2026 at 03:31

Historical Analysis & Change Tracking