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tdx.cat

TDX (Tesis Doctorals en Xarxa)

Last scanned Aug 5, 2026, 2:00 PM · 8 views

70

Overall score

Fair

Summary

Institutional repository that preserves and disseminates the academic and scientific output of the institution. This website uses Google Analytics. SEO is excellent (90/100) and accessibility is fair (70/100). Security scores poor (35/100) and performance good (80/100). Top issue: robots.txt not found.

Institutional repository that preserves and disseminates the academic and scientific output of the institution.

Top issues to fix

9 issues found · 3 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

  • Slow estimated load (5.1s)

    Performance

    Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • 2 cookies without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

+3 more issues — details in the sections below.

90

SEO

2 issue(s) found

80

Performance

5.05 s

35

Security

HTTPS & header checks

70

Accessibility

1 issue(s) found

Score history

+17 overall since Jul 26, 2026

Overall
70
SEO
90
Security
35
Performance
80
Accessibility
70

Organization

Company details published in this site's own structured data.

Institutional repository that preserves and disseminates the academic and scientific output of the institution.

Meta tags

Title
TDX (Tesis Doctorals en Xarxa)
Description
Institutional repository that preserves and disseminates the academic and scientific output of the institution.
Canonical
http://tdx.cat/
Language
en
Charset
UTF-8
Viewport
width=device-width,initial-scale=1
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Institutional repository
og:description
Institutional repository that preserves and disseminates the academic and scientific output of the institution.
og:type
website
og:url
http://tdx.cat/

Twitter Card

twitter:card
summary
twitter:title
Institutional repository
twitter:description
Institutional repository that preserves and disseminates the academic and scientific output of the institution.

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle Analytics

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Hellenic Academic and Research Institutions CA
Subject
tdx.cat
Valid from
Jul 22, 2026
Valid to
Feb 6, 2027
Days until expiry
184
SAN domains
tdx.cat, www.tdx.cat

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 3 · H3 17

Links

75 internal · 4 external · 20 broken

Images

49 total · 43 missing alt

Scripts / Styles

17 scripts · 5 stylesheets

JS / CSS size

1.6 KB · 0 B

Page size

40.2 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Over half of images are missing alt text

Scan details

Requested URL
https://tdx.cat
Final URL
https://tdx.cat
HTTP status
200
HTTP version
HTTP/1.1
Response time
5.05 s
HTML size
40.2 KB
Redirect chain
https://tdx.cat

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does tdx.cat use?
tdx.cat is built with jQuery, Google Analytics.
Is tdx.cat secure (HTTPS)?
Yes. tdx.cat uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 6, 2027.
Who hosts tdx.cat?
Hosting provider information for tdx.cat is not available yet.
What is tdx.cat's SEO score?
tdx.cat scored 90/100 for SEO in the latest analysis (excellent).
What is tdx.cat's overall website score?
tdx.cat has an overall SiteGraph score of 70/100, combining SEO, performance, security, and accessibility.
Has tdx.cat's score changed over time?
tdx.cat's overall score has improved by 17 points (from 53 to 70) since Jul 26, 2026.