polytechnique.edu
École polytechnique, école d'ingénieur
Last scanned Jul 26, 2026, 11:49 AM
Overall score
Great
Summary
L'École polytechnique est une école d'ingénieur qui associe recherche, enseignement et innovation au meilleur niveau scientifique et technologique. This website uses Drupal. SEO is good (80/100) and accessibility is fair (70/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
L'École polytechnique est une école d'ingénieur qui associe recherche, enseignement et innovation au meilleur niveau scientifique et technologique.
Top issues to fix
6 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
477 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- École polytechnique, école d'ingénieur
- Description
- L'École polytechnique est une école d'ingénieur qui associe recherche, enseignement et innovation au meilleur niveau scientifique et technologique.
- Canonical
- https://www.polytechnique.edu/
- Language
- fr
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
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.polytechnique.fr
- Valid from
- Jul 21, 2026
- Valid to
- Feb 5, 2027
- Days until expiry
- 191
- SAN domains
- www.polytechnique.fr, polytechnique.edu, www.polytechnique.edu, drupal.polytechnique.fr, polytechnique.fr
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 7 · H3 1
Links
81 internal · 35 external · 20 broken
Images
39 total · 25 missing alt
Scripts / Styles
12 scripts · 6 stylesheets
JS / CSS size
1.8 KB · 0 B
Page size
238 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://polytechnique.edu
- Final URL
- https://www.polytechnique.edu/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 473 ms
- HTML size
- 238 KB
- Redirect chain
- https://polytechnique.edu → https://www.polytechnique.edu/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does polytechnique.edu use?
- polytechnique.edu is built with Drupal.
- Is polytechnique.edu secure (HTTPS)?
- Yes. polytechnique.edu uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 5, 2027.
- Who hosts polytechnique.edu?
- Hosting provider information for polytechnique.edu is not available yet.
- What is polytechnique.edu's SEO score?
- polytechnique.edu scored 80/100 for SEO in the latest analysis (great).
- What is polytechnique.edu's overall website score?
- polytechnique.edu has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card