de.serlo.org
Registered
Page analyze update date:
2026/03/31 18:37:01
Last whois update date:
2026/07/19 02:07:16
Domain Status
Registered
Paid till
17.07.2027
Available from
16.08.2027
×
![Fullscreen website screenshot]()
de.serlo.org Website screenshot
SEO Score
73.29%
107
Score achieved
146
Maximum score
Main Information
Title: Serlo – Die freie Lernplattform
Description: empty
Keywords: empty
Page Encoding:
utf-8
Page Filesize: 159 KB
Server Information
IP: 172.67.74.208
Location: ,,,,,,
Http Server: cloudflare
Encoding: utf-8
Meta Tags List
- charset: utf-8
- name: viewport content: width=device-width
- property: og:site_name content: serlo.org
- property: og:type content: website
- property: og:title content: Serlo – Die freie Lernplattform
- property: og:url content: https://de.serlo.org/
- property: og:description content: Die freie Lernplattform
- property: og:image name: image content: https://de.serlo.org/_assets/img/meta/landing.png
- property: og:image:width content: 1200
- property: og:image:height content: 630
- charset: utf-8
- name: next-head-count content: 13
- property: og:site_name content: Serlo
- property: og:type content: website
- name: robots content: max-image-preview:large
- name: msapplication-TileColor content: #007ec1
- name: msapplication-config content: /_assets/browserconfig.xml
- name: theme-color content: #007ec1
Internal Links
External Links
Whois Information
domain_name: serlo.org
update_date: 2026-07-17T20:46:02.198Z
update_time: 1784321162
creation_date: 2002-07-17T20:45:08.966Z
creation_time: 1026938708
expiration_date: 2027-07-17T20:45:08Z
Whois Raw Data
Domain Name: SERLO.ORG
Registrar: OVH sas
Domain Status: client delete prohibited
Domain Status: client transfer prohibited
Domain Status: auto renew period
Registry Expiry Date: 2027-07-17T20:45:08Z
Creation Date: 2002-07-17T20:45:08.966Z
Updated Date: 2026-07-17T20:46:02.198Z
Name Server: KARA.NS.CLOUDFLARE.COM
Name Server: NORM.NS.CLOUDFLARE.COM
REGISTRAR Contact: OVH sas
>>> Last update of RDAP database: 2026-07-19T02:07:16Z
Robots.txt
User-agent: * Disallow: /page/revision/revisions/ Disallow: /page/revision/revision/ Disallow: /page/revision/ Disallow: /entity/repository/history/ Disallow: /entity/repository/compare/ Disallow: /backend Disallow: /users Disallow: /horizon Disallow: /flag Disallow: /license Disallow: /uuid/recycle-bin Disallow: /navigation/ Disallow: /authorization/ Disallow: /pages Disallow: /uuid/recycle-bin Disallow: /*/entity/trash-bin Sitemap: https://de.serlo.org/sitemap.xml
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
✓
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
✓
Page Size
163473 bytes
Page size acceptable for fast loading.
!
Resources
55 total
Too many resources. Optimize and combine files for better performance.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
✓
Robots.txt
Exists
Robots.txt file found.
✓
Sitemap
Declared in robots.txt
Sitemap declared in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
!
Compression
br
Enable gzip or zstd compression to reduce file sizes.
✓
Caching
public, max-age=0, must-revalidate
Cache-control headers properly set.
✓
Page Speed
0.59 ms
Excellent loading speed.
On-Page SEO
✓
Title
Serlo – Die freie Lernplattform
Good title length (30-60 characters).
!
Meta Description
empty Lenght:5
Meta description too short. Expand to 100-160 characters.
✓
H1 Heading
1 found - "Was möchtest du lernen ?"
Good - single H1 heading found.
!
Word Count
99
Content very short. Aim for at least 500 words for better SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
empty
Meta keywords set (note: not used by major search engines).
Content and UX
✓
Language
de
Language attribute properly set.
!
Images
14 total, 2 missing ALT
Add ALT text to images for accessibility and SEO.
✓
Viewport
width=device-width
Viewport meta tag properly set for mobile devices.
✓
Open Graph
All OG tags present.
All essential OpenGraph tags present.
✓
Structured Data
1 JSON-LD scripts
Structured data (JSON-LD) found.
Positions in Google
Search Phrases - Google
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 2 | /deutsch/289385/ein-... | ||
| 3 | /deutsch/289385/ein-... | ||
| 28 | /englisch/134087/per... |