Luftdaten.info - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
61% 
Page quality
83% 
Page structure
75% 
Link structure
58% 
Server
86% 
External factors
100% 
SEO Score
Response time
1.45 s
File size
116.30 kB
Words
960
Media files
19
Number of links
37 internal / 111 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
luftdaten.info – Feinstaub selber messen – Open Data und Citizen Science aus Stuttgart
The page title should be shorter than 580 pixels. It is 790 pixels long. Optimize title
The domain is used in the page's title.
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)
https://luftdaten.info/
There is a valid canonical link 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 is no subdomain.
The domain length is good.
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 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
robotsindex, follow, max-image-preview:large
viewportwidth=device-width, initial-scale=1, maximum-scale=1
google-site-verificationxcxjEsM_WM4Q-XYT-hTw_hxd220wRdrgLYKFfHHrCjo
langde-de
charsetUTF-8

Test up to 1.000 webpages of luftdaten.info with our free plan!

Try For Free
No trial. It's just free!

Page quality

Content
(Critically important)
This page contains 960 words. That's ok.
29.4% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
10 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 11.81 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, maximum-scale=1" is provided.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 144 characters this one is longer than 70 characters:
"bei hoher luftfeuchte, insbesondere nebel, können die werte deutlich höher sein, da die offiziellen st..."
Image SEO
(Somewhat important)
13 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
...loads/2018/01/luftdaten_logo_partner.pngluftdaten.info – Feinstaub selber messen
...016/11/logo_ok_lab_stuttgart-180x180.png
Insecure Content		logo_ok_lab_stuttgart
...ent/uploads/2017/03/feinstaub-sensor.jpgFeinstaub Sensor SDS011feinstaub-sensor
...loads/2018/01/luftdaten_logo_partner.pngNo alt attribute provided
...content/uploads/2018/01/air_bulgaria.pngNo alt attribute provided
...loads/2018/01/luftdaten_logo_partner.pngNo alt attribute provided
...2019/02/luftdaten-sensor-kit-495x400.jpgNo alt attribute provided
...ette_Seger_Alexandra_Steffan-495x400.jpgParadigmenwechsel Katja-Lisette Seger und Alexandra Steffan @ Merz Akademie
...sm_Header_A_Datum_4235ebf557-495x400.pngNo alt attribute provided
/wp-content/uploads/2016/12/okfnde.pngNo alt attribute provided
...llabor_nachhaltige_mobilitaetskultur.pngNo alt attribute provided
/wp-content/uploads/2016/11/codeforde.pngNo alt attribute provided
/wp-content/uploads/2016/11/bineckartor.pngNo alt attribute provided
.../uploads/2016/11/feinstaub_esslingen.pngNo alt attribute provided
/wp-content/uploads/2018/01/agvleonberg.pngNo alt attribute provided
...t/uploads/2016/11/buerofuergestalten.pngNo alt attribute provided
.../uploads/2018/01/stuttgarter_zeitung.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
LUFTDATEN SELBER MESSEN FAST FERTIG MIT DEINER HILFE MIT CITIZEN SCIENCE FEINSTAUB IST OPEN DATA
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 27 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 LUFTDATEN SELBER MESSEN FAST FERTIG MIT DEINER HILFE MIT CITIZEN SCIENCE FEINSTAUB IST OPEN DATA
H2 Bau einen Sensor und werde Teil des weltweiten Civic Tech Netzwerks
H2 Karten
H2 Kooperationen
H2 Deployments
H2 Blogbeiträge
H2 re:publica 2015 Hack your City
H2 Spenden
H3 Was ist das OK Lab Stuttgart?
H3 Was ist luftdaten.info
H3 Citizen Science – mach mit!
H3 Das OK Lab Stuttgart trifft sich:
H3 Deutschland
H3 Europa
H3 Welt
H3 Umfrage zur Nutzung eines Feinstaub-Sensors
H3 Paradigmenwechsel von Katja-Lisette Seger und Alexandra Steffan
H3 Drehmoment 2018 in der Region Stuttgart
H3 In Kooperation mit regionalen und überregionalen Partnern
H3 Projekt im Reallabor
H3 Kooperation mit der SWMH
H3 Weitere Informationen
H3 Messgenauigkeit des SDS011 [PM2.5]
H3 Sensordaten
H3 Lizenzen
H3 Sitemap
H6 FAST FERTIG MIT DEINER HILFE...
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
2 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are too many external links (111) on this page.

Found links on this page

LinkAttributesAnchor text
https://www.instagram.com/luft...New window External Subdomain Instagram
A-TITLE Instagram
https://twitter.com/SensorComm...New window External Twitter
A-TITLE Twitter
https://luftdaten.info/feed/Rss
A-TITLE Rss
https://sensor.community/External Sensor.Community
https://luftdaten.info/IMG-ALT luftdaten.info – Feinstaub selber messen
https://luftdaten.info/Home
/feinstaubsensor-bauen/Feinstaubsensor bauen
/laermsensor-bauen/Lärmsensor bauen
/einfuehrung-zum-laermsensor/Einführung zum Lärmsensor
/evaluation/Evaluation
https://luftdaten.info/faq/FAQ
https://luftdaten.info/spenden/Spenden
https://luftdaten.info/presse/Presse
https://luftdaten.info/kontakt/Kontakt
https://luftdaten.info/Anchor No Text
http://deutschland.maps.sensor...New window External Subdomain No Text
https://github.com/opendata-st...External No Text
https://de.wikipedia.org/wiki/...External Subdomain Civic Tech
A-TITLE Civic Technology
http://codefor.de/New window External Code for Germany
http://okfn.de/New window External Open Knowledge Foundation Germany
http://codefor.de/stuttgart/New window External IMG-ALT logo_ok_lab_stuttgart
https://opendatacommons.org/li...New window External Database Contents License (DbCL) v1.0
http://deutschland.maps.luftda...New window External Subdomain Karte
http://www.mnz.lubw.baden-wuer...New window External Subdomain Tagesmittelwert
http://codefor.de/stuttgart/New window External OK Lab Stuttgart
http://deutschland.maps.sensor...New window External Subdomain Feinstaub-Karte
https://events.sensor.communit...New window External Subdomain 2. Dienstag im Monat
http://shackspace.de/New window External shackspace
https://events.sensor.communit...New window External Subdomain 4. Dienstag im Monat
http://www1.stuttgart.de/stadt...New window External Subdomain Stadtbibliothek
https://www.meetup.com/de-DE/O...New window External Subdomain Zum Meetup
https://events.sensor.communit...New window External Subdomain Unterstützen | Workshop (?) Ab 19 Uhr bauen wir jeden 2. Dienstag im Monat unter fachkundiger Anleitung Feinstaub-Sensoren zusammen. shackspace, Ulmer Str. 2...
/feinstaubsensor-bauenZum Feinstaubsensor – Aufbau Guide Aufbauanleitung für deinen Feinstaub-Sensor. Ganz einfach.
http://stuttgart.maps.sensor.c...New window External Subdomain Feinstaub in Stuttgart (größere Kartenansicht)
A-TITLE Feinstaub in Stuttgart (größere Kartenansicht)
http://deutschland.maps.sensor...New window External Subdomain A-TITLE Deutschland
http://deutschland.maps.sensor...New window External Subdomain Text duplicate Deutschland
A-TITLE Deutschland
http://berlin.maps.sensor.comm...New window External Subdomain Berlin
A-TITLE Berlin
http://frankfurt.maps.sensor.c...New window External Subdomain Frankfurt
A-TITLE Frankfurt
http://freiburg.maps.sensor.co...New window External Subdomain Freiburg
A-TITLE Freiburg
http://hamburg.maps.sensor.com...New window External Subdomain Hamburg
A-TITLE Hamburg
http://hannover.maps.sensor.co...New window External Subdomain Hannover
A-TITLE Hannover
http://koeln.maps.sensor.commu...New window External Subdomain Köln
A-TITLE Köln
http://muenchen.maps.sensor.co...New window External Subdomain München
A-TITLE München
http://ruhrgebiet.maps.sensor....New window External Subdomain Ruhrgebiet
A-TITLE Ruhrgebiet
http://ulm.maps.sensor.community/New window External Subdomain Ulm
A-TITLE Ulm
http://belgium.maps.sensor.com...External Subdomain Belgien
http://brussels.maps.sensor.co...External Subdomain Brüssel
http://bosnia-and-herzegovina....External Subdomain Bosnien und Herzegovina
http://sarajevo.maps.sensor.co...External Subdomain Sarajevo
http://bulgaria.maps.sensor.co...External Subdomain Bulgarien
http://sofia.maps.sensor.commu...External Subdomain Sofia
http://plovdiv.maps.sensor.com...External Subdomain Plovdiv
http://burgas.maps.sensor.comm...External Subdomain Burgas
http://varna.maps.sensor.commu...External Subdomain Varna
http://netherlands.maps.sensor...New window External Subdomain Niederlande
A-TITLE Niederlande
http://denmark.maps.sensor.com...New window External Subdomain Dänemark
A-TITLE Dänemark
http://france.maps.sensor.comm...External Subdomain Frankreich
http://paris.maps.sensor.commu...External Subdomain Paris
http://alsace.maps.sensor.comm...External Subdomain Elsass
http://united-kingdom.maps.sen...External Subdomain Großbritannien
http://london.maps.sensor.comm...External Subdomain London
http://bristol.sensor.community/External Subdomain Bristol
http://italy.maps.sensor.commu...External Subdomain Italien
http://rome.maps.sensor.commun...External Subdomain Rom
http://bologna.maps.sensor.com...External Subdomain Bologna
http://palermo.sensor.community/External Subdomain Palermo
http://oesterreich.maps.sensor...External Subdomain Österreich
http://wien.maps.sensor.commun...External Subdomain Wien
http://graz.maps.sensor.commun...External Subdomain Graz
http://linz.maps.sensor.commun...External Subdomain Linz
http://innbruck.maps.sensor.co...External Subdomain Innsbruck
http://salzburg.maps.sensor.co...External Subdomain Salzburg
http://poland.maps.sensor.comm...External Subdomain Polen
http://warsaw.maps.sensor.comm...External Subdomain Warschau
http://wroclaw.maps.lsensor.co...External Subdomain Wroclaw
http://romania.maps.sensor.com...External Subdomain Rumänien
http://bucharest.maps.sensor.c...External Subdomain Bukarest
http://schweiz.maps.sensor.com...External Subdomain Schweiz
http://zuerich.maps.sensor.com...External Subdomain Zürich
http://basel.maps.sensor.commu...External Subdomain Basel
http://bern.maps.sensor.commun...External Subdomain Bern
http://genf.maps.sensor.commun...External Subdomain Genf
http://serbia.maps.sensor.comm...External Subdomain Serbien
http://belgrade.maps.sensor.co...External Subdomain Belgrad
http://hungary.maps.sensor.com...External Subdomain Ungarn
http://budapest.maps.sensor.co...External Subdomain Budapest
http://szeged.maps.sensor.comm...External Subdomain Szeged
http://thailand.maps.sensor.co...New window External Subdomain Thailand
A-TITLE Thailand
http://usa.maps.sensor.community/New window External Subdomain USA
A-TITLE USA
http://portland.maps.sensor.co...New window External Subdomain Portland (USA)
A-TITLE Portland (USA)
http://uae.maps.sensor.community/New window External Subdomain V.A.E.
A-TITLE V.A.E.
http://dubai.maps.sensor.commu...New window External Subdomain Dubai (V.A.E.)
A-TITLE Dubai (V.A.E.)
http://chile.maps.sensor.commu...New window External Subdomain Chile
A-TITLE Chile
http://santiago.maps.sensor.co...New window External Subdomain Santiago (Chile)
A-TITLE Santiago (Chile)
https://influencair.be/External InfluenceAir Citizens measuring air quality
http://influencair.be/New window External InfluenceAir
https://airbg.info/External Air Bulgaria Citizens measuring air quality
https://airbg.info/New window External Air Bulgaria
https://luftdata.se/External Luftdata.SE Mät luftdata själv
http://luftdata.se/New window External Luftdata.SE
/2019/02/28/umfrage-zur-nutzun...No Text
/2019/02/28/umfrage-zur-nutzun...Umfrage zur Nutzung eines Feinstaub-Sensors
A-TITLE Umfrage zur Nutzung eines Feinstaub-Sensors
/2018/10/15/paradigmenwechsel-...IMG-ALT Paradigmenwechsel Katja-Lisette Seger und Alexandra Steffan @ Merz Akademie
/2018/10/15/paradigmenwechsel-...Paradigmenwechsel von Katja-Lisette Seger und Alexandra Steffan
A-TITLE Paradigmenwechsel von Katja-Lisette Seger und Alexandra Steffan
/2018/09/25/drehmoment-2018-in...No Text
/2018/09/25/drehmoment-2018-in...Drehmoment 2018 in der Region Stuttgart
A-TITLE Drehmoment 2018 in der Region Stuttgart
https://youtu.be/esJpPUaSZjA?t...External No Text
https://www.okfn.de/New window External Subdomain No Text
http://www.r-n-m.net/New window External Subdomain No Text
http://codefor.de/New window External No Text
https://bineckartor.wordpress....New window External Subdomain No Text
http://feinstaub-esslingen.de/New window External No Text
http://www.ethoma.de/AGVL_Home/New window External Subdomain No Text
http://fuergestalten.de/New window External No Text
https://www.stuttgarter-zeitun...New window External Subdomain No Text
https://luftdaten.info/Anchor 1
https://luftdaten.info/Anchor 2
https://www.betterplace.org/de...New window External Subdomain „300 Feinstaub Messgeräte“
http://www.r-n-m.net/New window External Subdomain Citizen Science Feinstaub Messungen. Das Projekt ist Teil des Reallabor für nachhaltige Mobilitätskultur der Universität Stuttgart.
https://www.stuttgarter-zeitun...Nofollow External Subdomain StZ / Feinstaub
https://github.com/opendata-st...External OK Lab Stuttgart auf Github
https://github.com/opendata-st...External Feinstaub Sensoren WIKI
https://github.com/opendata-st...External Bauanleitung [pdf]
https://events.sensor.communit...External Subdomain Termine
/messgenauigkeitNew window Wie genau kann ein günstiger Feinstaub-Sensor messen? Die Messgenauigkeit des SDS011 wird ständig verbessert.
https://archive.sensor.community/External Subdomain Sensor Daten [csv]
https://stats.sensor.community...External Subdomain Aktive Sensoren
https://stats.sensor.community...External Subdomain Aktive Sensoren [svg graph]
https://twitter.com/luftdatenExternal TwitterBot
https://www.gnu.org/licenses/g...New window External Subdomain License for directory airrohr-firmware is GPL v3
https://opendatacommons.org/li...New window External License for data Database Contents License (DbCL) v1.0
https://luftdaten.info/Start
/feinstaubsensor-bauen/Text duplicate Feinstaubsensor bauen
https://luftdaten.info/faq/Text duplicate FAQ
/?page_id=14Blog
/evaluation/Text duplicate Evaluation
https://luftdaten.info/presse/Text duplicate Presse
https://luftdaten.info/spenden/Text duplicate Spenden
https://luftdaten.info/kontakt/Text duplicate Kontakt
https://luftdaten.info/impressum/Impressum
/datenschutzerklaerung/Datenschutzerklärung
https://www.instagram.com/luft...New window External Subdomain Text duplicate Instagram
A-TITLE Instagram
https://twitter.com/SensorComm...New window External Text duplicate Twitter
A-TITLE Twitter
https://luftdaten.info/feed/Text duplicate Rss
A-TITLE Rss
https://luftdaten.info/faq/Text duplicate FAQ
https://luftdaten.info/kontakt/Text duplicate Kontakt
https://luftdaten.info/impressum/Text duplicate Impressum
https://luftdaten.info/Anchor Nach oben scrollen
A-TITLE Nach oben scrollen

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://luftdaten.info/"
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 slow (1.45 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
The file size of the HTML document is fine (116 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 05 Oct 2024 22:52:49 GMT
content-typetext/html; charset=UTF-8
content-length20386
strict-transport-securitymax-age=0
varyAccept-Encoding,User-Agent
set-cookie50 Characters
expiresThu, 19 Nov 1981 08:52:00 GMT
cache-controlno-store, no-cache, must-revalidate
pragmano-cache
x-frame-optionsSAMEORIGIN
link<https://luftdaten.info/wp-json/>; rel="https://api.w.org/"
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 1,136 referring domains.
This page has 309,606 backlinks.
This page has backlinks from 937 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Disallow: /wp_luftdaten_info/

Similar sites

Search preview

Most important keywords

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

KeywordResultRecheck
Luftdaten81%Check
FEINSTAUB76%Check
Feinstaub messen73%Check
info70%Check
MESSEN67%Check
CITIZEN SCIENCE FEINSTAUB67%Check
Citizen Science66%Check
Open Data62%Check
Stuttgart61%Check
OPEN61%Check
Show more keywords and terms

Test up to 1.000 webpages of luftdaten.info with our free plan!

Try For Free
No trial. It's just free!

Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions