Lightpollutionmap.info - SEO Checker

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Overview of the SEO Check
Meta information
70% 
Page quality
44% 
Page structure
75% 
Link structure
0% 
Server
89% 
External factors
100% 
SEO Score
Response time
0.16 s
File size
44.00 kB
Words
78
Media files
8
Number of links
0 internal / 0 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Light pollution map
The page title is too short. (168 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Interactive world light pollution map. The map uses NASA Black marble VIIRS, World Atlas 2015, Aurora prediction, observatories, clouds and SQM/SQC overlay contributed by users.
The meta description is too long: 1121 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language defined in HTML: en
Server location: Austria
The following language is defined by HTML: en
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
descriptionInteractive world light pollution map. The map uses NASA Black marble VIIRS, World Atlas 2015, Aurora prediction, observatories, clouds and SQM/SQC overlay contributed by users.
keywordssvetlobno onesnaženje karta light pollution black marble map Aurora prediction astronomy telescopes dark sky observatories world atlas SQM SQC
DC.Languageen
DC.DescriptionInteractive world light pollution map. The map uses Black marble VIIRS VIIRS, World Atlas 2015, Aurora prediction, observatories, clouds and SQM/SQC overlay contributed by users.
viewportwidth=device-width, initial-scale=1
referrerno-referrer
theme-colortransparent
apple-mobile-web-app-capableyes
apple-mobile-web-app-status-bar-styletransparent
langen
content-typetext/html;charset=UTF-8

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Page quality

Content
(Critically important)
There are only 78 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
No paragraphs were detected.
5.1% of the text are stop words.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 4 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1" is provided.
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)
2 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
data:[...] Base64Overlay help iconVIIRS annual, VIIRS Trend, World Atlas 2015<br/>Cloud cover and Aurora raster overlays
data:[...] Base64World Atlas 2015 settings icon
data:[...] Base64No alt attribute provided
data:[...] Base64Feature help iconSQM (sky quality meter)<br/>SQM-L (with lense)<br/>SQM-LE (permanent installation with lense)<br/>SQC (sky quality camera)<br/>Observatories (amateur and professional)
data:[...] Base64Feature settings icon
data:[...] Base64Basemap help iconBase maps
/assets/Legend_WA2015-027a00cf.pngNo alt attribute provided
data:[...] Base64add

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
Some headings do not have any content.

Heading structure

Heading levelContent
H3 Layers
H3 Tools
H3 Legend
H3 My locations
H3 Empty heading
H3 Help
This page seems to be an entry page, because only very few links were found.
There are no external links on this page.

Found links on this page

No internal links were found.

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.lightpollutionmap.info/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
This page loads 4 JavaScript files. This may affect the load time negatively.
The page response time is excellent with 0.16 seconds.
This page only loads 1 CSS files. That's ok.
The file size of the HTML document is fine (44 kB).

HTTP Response Header

NameValue
dateSun, 10 Aug 2025 22:47:54 GMT
serverApache/2.4.58 (Ubuntu)
last-modifiedWed, 30 Jul 2025 18:38:05 GMT
etag"afd9-63b29d34cfd40-gzip"
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
cache-controlno-cache, no-store, must-revalidate
pragmano-cache
expires0
content-length17383
content-typetext/html
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 3,343 referring domains.
This page has 272,153 backlinks.
This page has backlinks from 2,349 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-Agent: *
Disallow: /geoserver/
Disallow: /dev/

Similar sites

Search preview

www.lightpollutionmap.info
Light pollution map
Interactive world light pollution map. The map uses NASA Black marble VIIRS, World Atlas 2015, Aurora prediction, observatories, clouds and SQM/SQC overlay contributed by users.

Most important keywords

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

KeywordResultRecheck
map73%Check
pollution map54%Check
World50%Check
Overlay50%Check
Atlas50%Check
World Atlas50%Check
SQM48%Check
VIIRS48%Check
SQC48%Check
Observatories48%Check
Show more keywords and terms

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