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SGSiteGraph

ista.com

ista SE - Corporate

Last scanned Jul 26, 2026, 12:19 PM

88

Overall score

Great

Summary

We are one of the leading energy service providers for increased energy efficiency in buildings. This website uses jQuery behind Fastly CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: No structured data (JSON-LD) found.

We are one of the leading energy service providers for increased energy efficiency in buildings. Find out more now!

Top issues to fix

6 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

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

  • 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.

  • 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

90

Performance

1.44 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.

We are one of the leading energy service providers for increased energy efficiency in buildings. Find out more now!

Meta tags

Title
ista SE - Corporate
Description
We are one of the leading energy service providers for increased energy efficiency in buildings. Find out more now!
Canonical
https://www.ista.com/corporate/
Language
en-US
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
summary
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQuery

Hosting & CDN

Hosting provider
—
CDN provider
Fastly
IP address
—
ASN
—

DNS records

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

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
ista.nl
Valid from
Jun 5, 2026
Valid to
Sep 3, 2026
Days until expiry
36
SAN domains
career.ista.com, isp-portal.ista.com, isp.ista.com, ista.com, ista.de, ista.fr, ista.nl, ista.sk, istanederland.nl, objego.de, production.ista.com, www.ista.com, www.ista.cz, www.ista.de, www.ista.fr, www.ista.nl, www.ista.no, www.ista.sk, www.istanederland.nl, www.objego.de, www.verbund-ma.de

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 3 · H3 7

Links

53 internal · 4 external · 20 broken

Images

14 total · 0 missing alt

Scripts / Styles

12 scripts · 1 stylesheets

JS / CSS size

9.1 KB · 0 B

Page size

55.8 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
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://ista.com
Final URL
https://www.ista.com/corporate/
HTTP status
200
HTTP version
HTTP/2
Response time
1.44 s
HTML size
55.8 KB
Redirect chain
https://ista.com → https://www.ista.com/ → https://www.ista.com/corporate → https://ista.com/corporate/ → https://www.ista.com/corporate/

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Frequently asked questions

What technology does ista.com use?
ista.com is built with jQuery.
Is ista.com secure (HTTPS)?
Yes. ista.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 3, 2026.
Who hosts ista.com?
Hosting provider information for ista.com is not available yet.
What is ista.com's SEO score?
ista.com scored 75/100 for SEO in the latest analysis (fair).
What is ista.com's overall website score?
ista.com has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.