operagallery.com

https://operagallery.com· First analyzed 14 May 2026· Updated 14 May 2026

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operagallery.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.154.156

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

wells.ns.cloudflare.com.monroe.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

353 ms10%

Speed Index

459 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7 KB

55 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

15 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Libraries

CSS Frameworks

Meta Frameworks

Other

AOS (Animate On Scroll)

Other

Icon Libraries

Tag Managers

CDN

SEO Analysis

D57/100

Meta Tags13/15

Content6/12

Headings3/8

Technical19/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

operagallery.comoperagallery.com

Opera Gallery – Modern and Contemporary art

Opera Gallery is an international gallery specializing in modern and contemporary art with 16 locations worldwide.

Title Length43 chars

Recommended: 50-60 chars (~273px / 580px)

Description Length114 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (7/8) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: standard

704 URLs

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100

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

F37/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

10/25

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:2%

Words:135

Token eff.:Too Short

Sections/1K:59.3

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 4.9w

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.

63/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

20/20

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

Forms & Inputs

5/15

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

4/15

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

4 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.

71/100

A+

<0.001 g

CO₂e / view

7.1 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

84 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

6.6 KB

Other

428 B

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

WAF

64d

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+H3

Valid From

18.04.2026

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

operagallery.com*.operagallery.com

SHA-256 Fingerprint

EF:F3:AE:D9:D7:D5:A2:6F:90:80:75:27:DB:BA:1C:A3:9A:CE:5D:61...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-cache, private)

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

9fbaf5f79fab9e69-CDG

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (3)

mailsys01.mediactive.fr

mailprotect.mediactive-network.net

Domain Information

operagallery.com

Domain Age

26y 8m

Created

18.09.1999

Expires

18.09.2026

Last Updated

05.09.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

67/100

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, shrink-to-fit=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Mercury Text G1 A

WCAG Partial

76/100

Readability

/30

25/30

16px · LH 1.50

Hierarchy

/20

16/20

2.5x ratio · ✓ H1→H6

WCAG

/25

17/25

2.92:1 min contrast

Performance

/25

18/25

1 font · 3 req

Heading Font

Mercury Text G1 A

Sans40px

Body Font

Mercury Text G1 A

Sans16px

Contrast Ratio

2.92:1

5 issues

Reading Comfort

Single Font Family

left aligned

40px

33px

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

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

⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 2.9:1).

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

Buy on MyFontsFlesch 36

Color Palette

9 unique colors

3.91:1 AA Large Light

#ffffff

Background· 65.4%

#7d827f

Other· 3.1%

#e4d2c2

Primary· 11.2%

#142933

Secondary· 4.9%

#b8ab9f

Secondary· 3.7%

#64524d

Secondary· 3.4%

#ae9484

Secondary· 3.1%

#c6c0ba

Secondary· 3%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

operagallery.com(7)cdnjs.cloudflare.com(3)connect.facebook.net(2)googletagmanager.com(2)scripts.clarity.ms(1)

Website Identity

operagallery.com

26 years old

Location detected: 🇨🇦 Canadavia ip

Gandi SASen

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube

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Last analyzed: 14 May 2026 at 15:34

Historical Analysis & Change Tracking