Dditools.inf.tu-dresden.de - SEO Checker

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Overview of the SEO Check
Meta information
70% 
Page quality
36% 
Page structure
100% 
Link structure
91% 
Server
100% 
External factors
74% 
SEO Score
Response time
0.10 s
File size
8.00 kB
Words
83
Media files
12
Number of links
19 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Informatikschultools
The page title is too short. (180 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: de
Language defined in HTML: de-de
Server location: United States of America
The following language is defined by HTML: de-de
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain name is very long.
The domain is no subdomain.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The character encoding is not specified in the HTTP header.
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width,initial-scale=1
langde-de
Content-Typetext/html; charset=UTF-8
X-UA-CompatibleIE=edge

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Page quality

Content
(Critically important)
There are only 83 words on this page. Use at least 250 words to provide useful information.
Words from the H1 heading are not used in the page content.
Only 1 paragraph/s was/were found on this page.
33.7% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 24 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width,initial-scale=1" is provided.
This page only loads 1 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
Image SEO
(Somewhat important)
10 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/static/DDI_Logo.svgDDI
/static/spielvorschau/animaker.pngNo alt attribute provided
/static/spielvorschau/traversierung.pngNo alt attribute provided
/static/spielvorschau/rel_algebra.pngNo alt attribute provided
/static/spielvorschau/normalisierung.pngNo alt attribute provided
/static/spielvorschau/er_transformation.pngNo alt attribute provided
/static/spielvorschau/automat_dfa.pngNo alt attribute provided
/static/spielvorschau/linksableitung.pngNo alt attribute provided
/static/spielvorschau/turingmaschine.pngNo alt attribute provided
/static/spielvorschau/rechnernetze_game.pngNo alt attribute provided
/static/spielvorschau/nat.pngNo alt attribute provided
...i.creativecommons.org/l/by/4.0/88x31.pngCreative Commons License

Page structure

H1 heading
(Critically important)
Tools für den Informatikunterricht
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Tools für den Informatikunterricht
H2 Algorithmen und Datenstrukturen
H2 Datenbanken
H2 Formale Systeme
H2 Rechnernetze
Some anchor texts are used more than once.
1 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
/dev/tools/uebersicht/Subdomain No Text
/tools/relationale-algebra/ind...Subdomain Basisoperationen der relationalen Algebra
/tools/er-transformation/index...Subdomain Vom ER-Modell zum Relationenmodell
/tools/normalisierung/index.htmlSubdomain Normalisierung
https://ddigames.inf.tu-dresde...External Subdomain Internetspiel
/tools/nat/Subdomain Netzwerkadressübersetzung mit NAT-Tabelle
/tools/linksableitung/index.htmlSubdomain Linksableitung
/tools/automat/index.htmlSubdomain Deterministischer endlicher Automat
/tools/turingmaschine/index.htmlSubdomain Turingmaschine
/tools/traversierungSubdomain Traversierung in Binärbäumen
http://ddi.inf.tu-dresden.de/External Subdomain IMG-ALT DDI
/tools/lernvideos/Subdomain Interaktive Lernvideos
/tools/traversierungSubdomain Text duplicate Traversierung in Binärbäumen
/tools/relationale-algebra/ind...Subdomain Text duplicate Basisoperationen der relationalen Algebra
/tools/normalisierung/index.htmlSubdomain Text duplicate Normalisierung
/tools/er-transformation/index...Subdomain Text duplicate Vom ER-Modell zum Relationenmodell
/tools/automat/index.htmlSubdomain Text duplicate Deterministischer endlicher Automat
/tools/linksableitung/index.htmlSubdomain Text duplicate Linksableitung
/tools/turingmaschine/index.htmlSubdomain Text duplicate Turingmaschine
https://ddigames.inf.tu-dresde...External Subdomain Text duplicate Internetspiel
/tools/nat/Subdomain Text duplicate Netzwerkadressübersetzung mit NAT-Tabelle
/dev/tools/uebersicht/Impressu...Subdomain Impressum
https://tu-dresden.de/impressumExternal Anchor Datenschutz
https://tu-dresden.de/barriere...External Barrierefreiheit
https://creativecommons.org/li...External IMG-ALT Creative Commons License

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://dditools.inf.tu-dresden.de/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.10 seconds.
This page does not require any CSS files.
This page only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (8 kB).

HTTP Response Header

NameValue
dateTue, 29 Oct 2024 05:54:31 GMT
serverApache
last-modifiedMon, 12 Jun 2023 13:28:17 GMT
etag"2026-5fdeeb103ffee-gzip"
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
content-length2022
content-typetext/html
statuscode200
http_versionHTTP/1.1

External factors

This page has only a few links from other websites.
This page only has backlinks from 23 referring domains.
This page only has 195 backlinks.
This page only has few backlinks from 23 different ip addresses.
This page is referenced by wikipedia.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

dditools.inf.tu-dresden.de
Informatikschultools

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Tools73%Check
Informatik62%Check
Informatikunterricht50%Check
Dresden46%Check
Didaktik der Informatik43%Check
Rechnernetze40%Check
Algorithmen38%Check
Datenstrukturen38%Check
Datenbanken38%Check
Formale38%Check
Show more keywords and terms

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