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SGSiteGraph

sdui.app

Sdui

Last scanned Jul 26, 2026, 5:47 AM

82

Overall score

Great

Summary

Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. This website is hosted on OVH - OVH SAS, FR. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores good (80/100) and performance excellent (90/100). Top issue: Missing canonical link.

Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. Jetzt Schule suchen und einloggen!

France
Hosted on OVH - OVH SAS, FR

Top issues to fix

6 issues found · 2 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Frame-Options header

    Security

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

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

70

SEO

4 issue(s) found

90

Performance

2.70 s

80

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. Jetzt Schule suchen und einloggen!

Contact

Email, phone, and address published on this site's own pages.

Source: https://sdui.app/contact

Meta tags

Title
Sdui
Description
Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. Jetzt Schule suchen und einloggen!
Canonical
Language
de
Charset
utf-8
Viewport
width=device-width, viewport-fit=cover, initial-scale=1, maximum-scale=1, user-scalable=0, shrink-to-fit=no
Robots meta
all
Manifest
https://sdui.app/manifest.json

OpenGraph & Twitter Card

OpenGraph

og:title
Sdui
og:description
Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. Jetzt Schule suchen und einloggen!
og:type
website
og:url
sdui.app

Twitter Card

twitter:card
summary
twitter:title
Sdui
twitter:description
Sdui ist die sichere Plattform für Kommunikation und Organisation an Schulen: Mit Stundenplan, Vertretungen, Cloud & mehr. Jetzt Schule suchen und einloggen!

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
OVH - OVH SAS, FR
CDN provider
—
IP address
46.105.198.201
ASN
AS16276 (OVH - OVH SAS, FR)

DNS records

TypeValue
A
  • 46.105.198.201
AAAA—
MX—
TXT
  • v=spf1 -all
NS
  • ns100.ovh.net
  • dns100.ovh.net
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
sdui.app
Valid from
Jul 23, 2026
Valid to
Oct 21, 2026
Days until expiry
86
SAN domains
app.sdui.de, beta.app.sdui.de, connect.pupil.ch, sdui.app

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

9 scripts · 4 stylesheets

JS / CSS size

2.5 KB · 491 B

Page size

7.1 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
1
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Careers

View careers page

This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.

Scan details

Requested URL
https://sdui.app
Final URL
https://sdui.app
HTTP status
200
HTTP version
HTTP/2
Response time
2.70 s
HTML size
7.1 KB
Redirect chain
https://sdui.app

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sdui.app use?
We did not detect any specific technologies for sdui.app in the latest scan.
Is sdui.app secure (HTTPS)?
Yes. sdui.app uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 21, 2026.
Who hosts sdui.app?
sdui.app is hosted on OVH - OVH SAS, FR.
What is sdui.app's SEO score?
sdui.app scored 70/100 for SEO in the latest analysis (fair).
What is sdui.app's overall website score?
sdui.app has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
Is sdui.app hiring?
sdui.app has a careers page; check it directly for current openings.