StackOptic
Back to Search
catedra.com favicon

catedra.com

https://catedra.com· First analyzed 20 May 2026· Updated 20 May 2026
Export
catedra.com
Desktop screenshot of catedra.com
Mobile screenshot of catedra.com
Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.1.91

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

CDN

CDN

Nameservers

ns2.p201.dns.oraclecloud.net.ns3.p201.dns.oraclecloud.net.ns4.p201.dns.oraclecloud.net.ns1.p201.dns.oraclecloud.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
700 ms10%
Speed Index
910 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
96 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
Fastly, Inc.
CDN
CDN

Technology Stack

12 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelMatomo

Libraries

2
jQueryv3.3.1
jQuery UI

UI Components

2
SwiperOwl Carousel

CSS Frameworks

2
Bootstrap
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

SEO Analysis

C62/100
18
7
1
Meta Tags5/15
Content8/12
Headings8/8
Technical19/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
C
catedra.comcatedra.com

Ediciones Cátedra

Ediciones Cátedra

Title Length17 chars

Recommended: 50-60 chars (~101px / 580px)

Description Length17 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (87/126) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

4,829 URLs

robots.txt

26 rules

Local SEO

Local Search Readiness

8/100
Poor
3 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D40/100
Bot Access
19/25
Machine Read.
7/25
Schema Data
0/25
Citation
14/25

AI Bot Access

13/14 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
Text ratio:1%
Words:604
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary67w
Descriptive Headingsavg 2.8w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
B
76/100
12
Passed
3
Critical
1
Warnings
Images & Alt Text
15/20
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
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
9/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
48/100
C
153 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
174 mg
vs
Returning (cached)
87 mg
Annual (10K/mo)
18.3 kg
Emission Segments
Data Center
8 mg
Network
45 mg
Device
100 mg
Resource Breakdown
JavaScript
206.6 KB
Images
1.2 MB
CSS
42.7 KB
Fonts
936 B
HTML
8.2 KB
Green Hosting Verified
Axis12 Ltd
GWF Verified
5 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Interactive

HTTPS

No WAF

89d

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

20.05.2026

Valid Until

18.08.2026

Subject Alternative Names (2)

*.catedra.comcatedra.com

SHA-256 Fingerprint

2B:ED:2E:C1:27:4D:5F:98:9E:5D:3A:50:F9:E4:2D:F4:78:7E:98:37...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-length
8046
content-security-policy
default-src 'self' 'unsafe-inline' https://sdk.privacy-cente...
content-type
text/html; charset=UTF-8
Good Warning Issue

Email Infrastructure

Mimecast

Score

95

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

de-smtp-inbound-1.mimecast.com
de-smtp-inbound-2.mimecast.com

Domain Information

catedra.com

Domain Age
29y 11m

Created

17.06.1996

Expires

16.06.2026

Last Updated

23.03.2026

Registrar

EuroDNS S.A.

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice
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.
B
76/100
Mobile Friendly30 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Radio Canada + Arial

WCAG Partial
67/100
Readability
/30
16/30

13px · LH 1.50

Hierarchy
/20
16/20

3.85x ratio · ✓ H1→H6

WCAG
/25
15/25

2.91:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Radio Canada

Sans50px

Body Font

Arial

Sans13px

Contrast Ratio

2.91:1

6 issues

Reading Comfort

~46 CPL

Optimal (45–75)
50px
h1
40px
h2
13px
p

❌ Critical: 13px 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).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 2.9:1).

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

GGoogle FontsFluid TypeFlesch 0

Color Palette

7 unique colors
15.56:1 AAA Light
#ffffff
Background· 33.800000000000004%
#222427
Text· 6.9%

Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
Matomo (Piwik)Mid-Market

User behavior and product analytics

1

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

26 Resources

20
Scripts
6
Styles
8
Async
0
Defer

Top Script Sources

googletagmanager.com(6)local(6)sdk.privacy-center.org(2)grupoanaya.es(2)matomo.bemyvega.com(1)

Website Identity

catedra.com

clientes@grupoanaya.com
29 years old
Location detected: 🇨🇦 Canadavia ip
EuroDNS S.A.📧 Mimecastes

Sponsored

Last analyzed: 20 May 2026 at 04:51

Historical Analysis & Change Tracking