What technology does co2online.de use?

co2online.de is built with Apache.

Is co2online.de secure (HTTPS)?

Yes. co2online.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 30, 2026.

Who hosts co2online.de?

Hosting provider information for co2online.de is not available yet.

What is co2online.de's SEO score?

co2online.de scored 75/100 for SEO in the latest analysis (fair).

What is co2online.de's overall website score?

co2online.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.

co2online.de

co2online – die gemeinnützige Energiespar-Beratung! | co2online

Last scanned Jul 26, 2026, 3:19 PM

Overall score

Great

Summary

Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. This website uses Apache. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance fair (70/100). Top issue: Title longer than 60 characters.

Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. Wir helfen Ihnen: Unabhängig, kostenfrei, nicht-kommerziell.

Top issues to fix

6 issues found · 1 high priority

Slow estimated load (10.5s)
Performance
Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
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.
15 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

4 issue(s) found

Performance

10.50 s

100

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.

Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. Wir helfen Ihnen: Unabhängig, kostenfrei, nicht-kommerziell.

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Meta tags

Title: co2online – die gemeinnützige Energiespar-Beratung! | co2online
Description: Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. Wir helfen Ihnen: Unabhängig, kostenfrei, nicht-kommerziell.
Canonical: https://www.co2online.de/
Language: de
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest: https://www.co2online.de/_assets/ce888ac328d34b64fcb03f6e17bade21/Frontend/@sites/co2online-main/assets/manifest-CKFOP39j.webmanifest

Technologies

Detected frameworks, languages, and tools.

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: Let's Encrypt
Subject: co2online.de
Valid from: Jul 2, 2026
Valid to: Sep 30, 2026
Days until expiry: 65
SAN domains: alt.co2online.de, co2online.de, www.co2online.de

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyEnabled

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 8 · H3 1

Links

362 internal · 12 external · 15 broken

Images

44 total · 0 missing alt

Scripts / Styles

4 scripts · 1 stylesheets

JS / CSS size

6.3 KB · 0 B

Page size

359 KB

Robots.txt & Sitemap

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

SEO issues

Title longer than 60 characters
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://co2online.de
Final URL: https://www.co2online.de/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 10.49 s
HTML size: 359 KB
Redirect chain: https://co2online.de → https://www.co2online.de/

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Frequently asked questions

What technology does co2online.de use?: co2online.de is built with Apache.
Is co2online.de secure (HTTPS)?: Yes. co2online.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 30, 2026.
Who hosts co2online.de?: Hosting provider information for co2online.de is not available yet.
What is co2online.de's SEO score?: co2online.de scored 75/100 for SEO in the latest analysis (fair).
What is co2online.de's overall website score?: co2online.de has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.