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opencascade.org

https://opencascade.org· First analyzed 19 May 2026· Updated 19 May 2026
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opencascade.org
Desktop screenshot of opencascade.org
Mobile screenshot of opencascade.org
Mobile

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Hosting Provider

OVHcloud
ovhcloud.com

IP Address

5.196.194.182

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Roubaix, France

ASN

AS16276

Organization

OVH SAS

Server

Nginx

Nameservers

ns-187-a.gandi.net.ns-73-b.gandi.net.ns-99-c.gandi.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
572 ms10%
Speed Index
744 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.6 MB
75 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
CMS
Drupalv7
Infrastructure
Hosting
OVHcloud

Technology Stack

7 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Libraries

1
jQueryv2.2

UI Components

1
Owl Carousel

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C65/100
18
5
2
Meta Tags10/15
Content11/12
Headings8/8
Technical18/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
O
opencascade.orgopencascade.org

Open CASCADE Technology | Collaborative development portal

No description available for this page.

Title Length58 chars

Recommended: 50-60 chars (~349px / 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 (44/51) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

8,961 URLs

robots.txt

70 rules

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.

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AI & LLM Readiness

D42/100
Bot Access
20/25
Machine Read.
12/25
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:11%
Words:869
Token eff.:Optimal
Sections/1K:17.3
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 2.7w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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
80/100
12
Passed
3
Critical
1
Warnings
Images & Alt Text
20/20
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
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
52/100
C
162 mg
CO₂e / view
1.6 MB
Page Weight
60%
Cleaner Than
New Visitor
185 mg
vs
Returning (cached)
92 mg
Annual (10K/mo)
19.4 kg
Emission Segments
Data Center
8 mg
Network
47 mg
Device
106 mg
Resource Breakdown
JavaScript
472.5 KB
Images
796.2 KB
CSS
317.9 KB
HTML
12.1 KB
Green Hosting Verified
OVHcloud
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

63d

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

22.04.2026

Valid Until

21.07.2026

Subject Alternative Names (2)

*.dev.opencascade.orgdev.opencascade.org

SHA-256 Fingerprint

79:AE:88:53:7C:AF:FD:A2:5E:E2:AB:68:20:74:20:11:21:B7:CF:4A...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-language
en
content-type
text/html; charset=utf-8
date
Tue, 19 May 2026 09:07:28 GMT
expires
Sun, 19 Nov 1978 05:00:00 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

opencascade.org

Domain Age
26y 6m

Created

09.11.1999

Expires

09.11.2027

Last Updated

20.10.2025

Registrar

Gandi SAS

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
Privacy policy page linked

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.
D
50/100
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=1920px, initial-scale=1.0130208333333333
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Verdana

WCAG Partial
67/100
Readability
/30
26/30

21px · LH 1.50

Hierarchy
/20
16/20

3.14x ratio · ✓ H1→H6

WCAG
/25
10/25

1:1 min contrast

Performance
/25
15/25

1 font · 2 req

Heading Font

Verdana

Sans66px

Body Font

Verdana

Sans21px

Contrast Ratio

1:1

14 issues

Reading Comfort

~38 CPL

Narrow lines
66px
h1
40px
h2
24px
h3
21px
p

✅ Excellent readability: 21px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 43/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 3.1x larger than body text.

Buy on MyFontsFlesch 43

Color Palette

4 unique colors
Light
#32174c
Primary· 82.39999999999999%
#50365a
Secondary· 10.1%
#6e5b78
Secondary· 4.2%
#d7b34c
Accent· 3.5%

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

28 Resources

20
Scripts
8
Styles
2
Async
1
Defer

Top Script Sources

dev.opencascade.org(17)google-analytics.com(1)googletagmanager.com(1)cdn.jsdelivr.net(1)

Website Identity

opencascade.org

26 years old
Location detected: 🇫🇷 Francevia ip
Gandi SASen

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Last analyzed: 19 May 2026 at 09:07

Historical Analysis & Change Tracking