What technology does iac.es use?

iac.es is built with Drupal, jQuery, Google Analytics, Apache.

Is iac.es secure (HTTPS)?

Yes. iac.es uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 7, 2027.

Hosting provider information for iac.es is not available yet.

What is iac.es's SEO score?

iac.es scored 65/100 for SEO in the latest analysis (fair).

What is iac.es's overall website score?

iac.es has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.

Has iac.es's score changed over time?

iac.es's overall score has declined by 1 point (from 86 to 85) since Jul 26, 2026.

iac.es

Home | Instituto de Astrofísica de Canarias • IAC

Last scanned Aug 2, 2026, 6:00 PM · 12 views

Overall score

Great

Summary

This website uses Apache. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

8 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

835 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-1 overall since Jul 26, 2026

Overall: 85
SEO: 65
Security: 80
Performance: 100
Accessibility: 100

Organization

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

X (Twitter)Facebook Instagram LinkedIn YouTube

Meta tags

Title: Home | Instituto de Astrofísica de Canarias • IAC
Description
Canonical: https://iac.es/en
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Drupal jQuery Google Analytics Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Hellenic Academic and Research Institutions CA
Subject: www.iac.es
Valid from: Jul 23, 2026
Valid to: Feb 7, 2027
Days until expiry: 188
SAN domains: www.iac.es, comunica.iac.es, iac.es, iac.edu.es, www.iac.edu.es

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 12 · H3 0

Links

96 internal · 14 external · 20 broken

Images

24 total · 0 missing alt

Scripts / Styles

44 scripts · 47 stylesheets

JS / CSS size

3.0 KB · 63 B

Page size

85.0 KB

Robots.txt & Sitemap

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

SEO issues

Missing meta description
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://iac.es
Final URL: https://iac.es
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 834 ms
HTML size: 85.0 KB
Redirect chain: https://iac.es

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does iac.es use?: iac.es is built with Drupal, jQuery, Google Analytics, Apache.
Is iac.es secure (HTTPS)?: Yes. iac.es uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 7, 2027.
Who hosts iac.es?: Hosting provider information for iac.es is not available yet.
What is iac.es's SEO score?: iac.es scored 65/100 for SEO in the latest analysis (fair).
What is iac.es's overall website score?: iac.es has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Has iac.es's score changed over time?: iac.es's overall score has declined by 1 point (from 86 to 85) since Jul 26, 2026.

Top issues to fix

Score history

Organization

Meta tags

OpenGraph & Twitter Card

Technologies

Hosting & CDN

DNS records

TLS / SSL certificate

Security headers

Content & assets

Robots.txt & Sitemap

SEO issues

Accessibility issues

Scan details

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Frequently asked questions