gtg.ch

https://gtg.ch· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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gtg.ch

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.167.210

Site Location

🇨🇭 Switzerlandvia phone

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

kolton.ns.cloudflare.com.cora.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

15.1 MB

136 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.8.5

cms

Twenty Nineteenv1.4Custom

by the WordPress team

View Theme

Technology Stack

18 Technologies Detected

Plugins

Boxzilla2 Apex Notification Bar Lite Pixelyoursite Flow Flow

Duracelltomi Google Tag Manager

Analytics

Libraries

CSS Frameworks

Icon Libraries

Tag Managers

Marketing

Advertising

CDN

SEO Analysis

A83/100

Meta Tags11/15

Content10/12

Headings7/8

Technical25/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

gtg.chgtg.ch

Accueil - Grand Théâtre de Genève

Opéra, Ballet, La Plage, récitals, concerts… Découvrez dès maintenant la programmation du Grand Théâtre de Genève

Title Length33 chars

Recommended: 50-60 chars (~205px / 580px)

Description Length113 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (64/74) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

3 rules

Local SEO

Local Search Readiness

42/100

Fair

13 9

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

8/25

Citation

17/25

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:12%

Words:6,999

Token eff.:Excessive

Depth:1/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary79w

Descriptive Headingsavg 1.4w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (6)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

13/20

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

Semantic Structure

17/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

14/15

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

2/15

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

3 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.

35/100

1.56 g

CO₂e / view

15.1 MB

Page Weight

Cleaner Than

New Visitor

1.78 g

Returning (cached)

891 mg

Annual (10K/mo)

187.0 kg

Emission Segments

Data Center

76 mg

Network

458 mg

Device

1.02 g

Resource Breakdown

JavaScript

2.8 MB

Images

11.5 MB

CSS

749.3 KB

HTML

45.8 KB

Other

9.6 KB

Green Hosting Verified

Cloudflare

GWF Verified

7 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

26%Critical

Interactive

HTTPS

WAF

42d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

15.04.2026

Valid Until

14.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

gtg.ch*.gtg.ch

SHA-256 Fingerprint

EA:02:B0:C9:7F:CF:17:08:4C:31:D6:B4:D5:41:03:90:AF:C0:58:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 3s(max-age=3, must-revalidate, max-age=0)

cf-cache-status

DYNAMIC

cf-ray

a0543b1ddd72b7fc-CLE

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Tue, 02 Jun 2026 05:59:15 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

gtg-ch.mail.protection.outlook.com

Domain Information

gtg.ch

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

76/100

Mobile Friendly7 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

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system + Helvetica Neue

WCAG Partial

57/100

Readability

/30

16/30

12px · LH 1.50

Hierarchy

/20

15/20

6.67x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

10/25

System fonts

Heading Font

-apple-system

Sans80px

Body Font

Helvetica Neue

Sans12px

Contrast Ratio

1:1

19 issues

Reading Comfort

~46 CPL

Optimal (45–75)

80px

12px

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

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

✅ Optimal line length: ~46 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 1.0:1).

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

Fluid Type (rem)Flesch 44

Color Palette

8 unique colors

Light

#ffffff

Background· 38%

#bd6002

Primary· 21.9%

#00612a

Accent· 21.3%

#edf0f2

Secondary· 5.1%

#b04a0c

Accent· 3.7%

#314623

Secondary· 3.4%

#959474

Secondary· 3%

Business & Marketing Stack

5 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

gtg.ch(8)local(3)connect.facebook.net(2)googletagmanager.com(2)js.hs-analytics.net(1)

Website Identity

Grand Théâtre de Genève

Organization

Opéra, Ballet, La Plage, récitals, concerts… Découvrez dès maintenant la programmation du Grand Théâtre de Genève

+41223225000

www.gtg.ch/

Location detected: 🇨🇭 Switzerlandvia phone

📧 Microsoft 365fr-FR

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Pinterest

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Last analyzed: 02 Jun 2026 at 05:59

Historical Analysis & Change Tracking