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SGSiteGraph

ista.ac.at

ISTA

Last scanned Aug 24, 2026, 1:22 PM

85

Overall score

Great

Summary

Institute of Science and Technology Austria. This website uses WordPress. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (80/100). Top issue: Multiple H1 headings found.

Institute of Science and Technology Austria

Top issues to fix

6 issues found · 1 high priority

  • Missing Strict-Transport-Security header

    Security

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

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

  • No structured data (JSON-LD) found

    SEO

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

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

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

  • 20 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

75

SEO

4 issue(s) found

80

Performance

1.38 s

90

Security

HTTPS & header checks

100

Accessibility

0 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.

Institute of Science and Technology Austria

Meta tags

Title
ISTA
Description
Institute of Science and Technology Austria
Canonical
https://www.ist.ac.at/en/home/
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta
max-image-preview:large
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
ISTA Homepage
og:description
Institute of Science and Technology Austria
og:type
website
og:url
https://ista.ac.at

Twitter Card

twitter:card
summary_large_image
twitter:title
ISTA Homepage
twitter:description
Institute of Science and Technology Austria

Technologies

Detected frameworks, languages, and tools.

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
*.ista.ac.at
Valid from
Jul 27, 2026
Valid to
Feb 11, 2027
Days until expiry
170
SAN domains
*.ista.ac.at, ista.ac.at

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 10 · H2 1 · H3 0

Links

116 internal · 23 external · 20 broken

Images

83 total · 0 missing alt

Scripts / Styles

43 scripts · 9 stylesheets

JS / CSS size

20.3 KB · 20.9 KB

Page size

227 KB

Robots.txt & Sitemap

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

SEO issues

  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://ista.ac.at
Final URL
https://ista.ac.at/home
HTTP status
200
HTTP version
HTTP/2
Response time
1.37 s
HTML size
227 KB
Redirect chain
https://ista.ac.at → https://ista.ac.at/home

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Frequently asked questions

What technology does ista.ac.at use?
ista.ac.at is built with WordPress, jQuery, Apache.
Is ista.ac.at secure (HTTPS)?
Yes. ista.ac.at uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 11, 2027.
Who hosts ista.ac.at?
Hosting provider information for ista.ac.at is not available yet.
What is ista.ac.at's SEO score?
ista.ac.at scored 75/100 for SEO in the latest analysis (fair).
What is ista.ac.at's overall website score?
ista.ac.at has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.