What technology does co2online.de use?

co2online.de is built with Vue.js, 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 70/100 for SEO in the latest analysis (fair).

What is co2online.de's overall website score?

co2online.de has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.

Has co2online.de's score changed over time?

co2online.de's overall score has improved by 4 points (from 85 to 89) since Jul 26, 2026.

co2online.de

co2online – die gemeinnützige Energiespar-Beratung! | co2online

Last scanned Aug 4, 2026, 3:00 AM · 9 views

Overall score

Great

Summary

Strom, Heizen, energetische Modernisierung, Fördermittel + Infos zu Klimaschutz und Klimawandel. This website uses Apache. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (90/100). 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

5 issues found

Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
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.

SEO

5 issue(s) found

Performance

577 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

+4 overall since Jul 26, 2026

Overall: 89
SEO: 70
Security: 100
Performance: 90
Accessibility: 100

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.

Facebook Instagram YouTube

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.

Vue.js 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: 56
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 2 · H2 8 · H3 1

Links

364 internal · 15 external · 0 broken

Images

49 total · 0 missing alt

Scripts / Styles

6 scripts · 4 stylesheets

JS / CSS size

6.4 KB · 262 KB

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
Multiple H1 headings found
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: 570 ms
HTML size: 359 KB
Redirect chain: https://co2online.de → https://www.co2online.de/

See something wrong on this report? Request a correction

Same technology stack

idoctors.it

Prenotazione visite mediche online > iDoctors

apachephpmeta-pixel

· CloudFront

locaweb.com.br

Hospedagem de Site com Domínio Grátis - Locaweb

apachegoogle-analyticsmeta-pixel

gleneagleshospitals.co.in

Gleneagles Hospitals is a part of the IHH Healthcare Network

apachedrupalgoogle-analytics

eiu.edu

Eastern Illinois University | Official Website | EIU

apachemeta-pixelgoogle-analytics

e-guma.ch

e-guma Gutscheinsystem und Ticketsystem

wordpressplausibleapache

mbg.com

Home - Mainz Brady Group

wordpressapachegoogle-analytics

Frequently asked questions

What technology does co2online.de use?: co2online.de is built with Vue.js, 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 70/100 for SEO in the latest analysis (fair).
What is co2online.de's overall website score?: co2online.de has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
Has co2online.de's score changed over time?: co2online.de's overall score has improved by 4 points (from 85 to 89) since Jul 26, 2026.