leokannerschool.nl | Free Online SEO Audit for leokannerschool.nl

Tasks

Make the site mobile device friendly.
Select one version of your site as main and make a redirect from other versions to that one.
Avoid using deprecated HTML tags.
Implement the viewport meta tag.

SEO

URL

Domain : www.leokanner.nl/

Character length : 17

Title

Leo Kanner > Home

Keywords (meta keywords)

Good! The website does not use “meta keywords”.

Open Graph Protocol

Error! The website does not use the OG (Open Graph) protocol.

Dublin Core

Dublin Core is not used

Underscores in the URLs

Good! No underscore (_) found in the URLs.

Search engine friendly URLs

Good! The website uses SEO friendly URLs.

Checking the robots.txt file

There is robots.txt file.
https://leokanner.nl/robots.txt

User-agent	Disallowed for the search engines
*	/admin/ /App_Browsers/ /App_Code/ /App_Data/ /App_GlobalResources/ /bin/ /Components/ /Config/ /contest/ /controls/ /DesktopModules/ /Documentation/ /HttpModules/ /images/ /Install/ /js/ /Portals/ /Providers/ /Resources/ContentRotator/ /Resources/ControlPanel/ /Resources/Dashboard/ /Resources/FeedBrowser/ /Resources/OpenForceAd/ /Resources/Search/ /Resources/Shared/ /Resources/SkinWidgets/ /Resources/TabStrip/ /Resources/Widgets/ /Activity-Feed/userId/
msnbot	/admin/ /App_Browsers/ /App_Code/ /App_Data/ /App_GlobalResources/ /bin/ /Components/ /Config/ /contest/ /controls/ /DesktopModules/ /Documentation/ /HttpModules/ /images/ /Install/ /js/ /Portals/ /Providers/ /Resources/ContentRotator/ /Resources/ControlPanel/ /Resources/Dashboard/ /Resources/FeedBrowser/ /Resources/OpenForceAd/ /Resources/Search/ /Resources/Shared/ /Resources/SkinWidgets/ /Resources/TabStrip/ /Resources/Widgets/ /Activity-Feed/userId/
Slurp	/*/ctl/ /admin/ /App_Browsers/ /App_Code/ /App_Data/ /App_GlobalResources/ /bin/ /Components/ /Config/ /contest/ /controls/ /DesktopModules/ /Documentation/ /HttpModules/ /images/ /Install/ /js/ /Portals/ /Providers/ /Resources/ContentRotator/ /Resources/ControlPanel/ /Resources/Dashboard/ /Resources/FeedBrowser/ /Resources/OpenForceAd/ /Resources/Search/ /Resources/Shared/ /Resources/SkinWidgets/ /Resources/TabStrip/ /Resources/Widgets/ /Activity-Feed/userId/
Googlebot	/*/ctl/ /admin/ /App_Browsers/ /App_Code/ /App_Data/ /App_GlobalResources/ /bin/ /Components/ /Config/ /contest/ /controls/ /Documentation/ /HttpModules/ /Install/ /Providers/ /Activity-Feed/userId/
Yahoo Pipes 1.0	/admin/ /App_Browsers/ /App_Code/ /App_Data/ /App_GlobalResources/ /bin/ /Components/ /Config/ /contest/ /controls/ /DesktopModules/ /Documentation/ /HttpModules/ /images/ /Install/ /js/ /Portals/ /Providers/ /Resources/ContentRotator/ /Resources/ControlPanel/ /Resources/Dashboard/ /Resources/FeedBrowser/ /Resources/OpenForceAd/ /Resources/Search/ /Resources/Shared/ /Resources/SkinWidgets/ /Resources/TabStrip/ /Resources/Widgets/ /Activity-Feed/userId/
MJ12bot	All subpages are denied to crawl
SemrushBot	All subpages are denied to crawl
AhrefsBot	All subpages are denied to crawl

Social

Social Engagement

Linkedin5

Facebook Share0

Facebook Comments0

Content

Doctype

XHTML 1.0 Transitional

Encoding

Perfect! The character encoding is set: UTF-8.

Language

We have found the language localisation: ”nl”.

Title

Leo Kanner > Home

Character length : 17

Good! The title’s length is between 10 and 70 characters.

Text / HTML ratio

Ratio : 13%

Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.

Headings

H1	H2	H3	H4	H5	H6
1	0	0	2	1	0

Heading structure in the source code

<H1>
<H5>
<H4> AED
<H4> 45 jaar Prof. Dr. Leo Kanner

Word cloud

leo14
kanner7
onderwijsgroep6
vso6
kannerschool5
onderwijs5
aed4
prof4
leerlingen4
problematiek3
ambulante3
psychiatrische3
curium-lumc3
en/of2
leiden2
oegstgeest2
vestigingen2
speciaal2
jaar2
esb2
leiderdorp2
parachute2
kannercollege2
hooftcollege2

Keyword matrix

word	title	descriptions	heading
leo
kanner
onderwijsgroep
vso
kannerschool
onderwijs

Two Word cloud

leo kanner5
kanner onderwijsgroep4
leo kannerschool4
oegstgeest leo2
leo kannercollege2
en/of psychiatrische2

Three Word cloud

leo kanner onderwijsgroep2

404 Page

The website has a 404 error page.

Flash content

Good! The website does not have any flash contents.

Frame

Good! The website does not use iFrame solutions.

Images

We found 1 images on this web page.

Alternate attributes for the following 1 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.

http://www.leokanner.nl/.. /logo.png

Technologies

Mobile optimization

Error! This website is not optimized for mobile devices... It is optimized for devices which have at least 986px wide display!

Detected applications

	DNN	CMS
	Google Analytics	Analytics
	Microsoft ASP.NET	Web Frameworks
	jQuery	JavaScript Frameworks
	IIS	Web Servers
	Windows Server	Operating Systems

Deprecated HTML elements

Good! No deprecated HTML tags are detected.

Redirection (www / not www)

Error! The web address is accessible with and without www!

Deprecated HTML elements

Good! No deprecated HTML tags are detected.

Printability

Suggestion! Unfortunately, no printer-friendly CSS found.

Meta Tag (viewport tag, mobile devices)

Error! The meta tag named viewport is missing.

Speed test

Server response time

The server response time is fast enough.

Loading time

478 ms

Table layout

Good! No nested tables found.

Number of HTTP resources

Number of source domains

Render blocking resources

The elements below are blocking the “above the fold” rendering.
List of render blocking javascript files

http://www.leokanner.nl/.. /jquery.js?cdv=392
http://www.leokanner.nl/WebResource.axd?d=pynGkmcFUV2epgab0_bFxS...
http://www.leokanner.nl/Telerik.Web.UI.WebResource.axd?_TSM_Hidd...
http://www.leokanner.nl/js/dnn.js?cdv=392
http://www.leokanner.nl/js/dnncore.js?cdv=392
http://www.leokanner.nl/.. /SearchSkinObjectPreview.js?cdv=392
http://www.leokanner.nl/js/dnn.servicesframework.js?cdv=392

List of render blocking css files

http://www.leokanner.nl/.. /default.css?cdv=392
http://www.leokanner.nl/DesktopModules/HTML/module.css?cdv=392
http://www.leokanner.nl/.. /SearchSkinObjectPreview.css?cdv=392
http://www.leokanner.nl/.. /skin.css?cdv=392
http://www.leokanner.nl/.. /container.css?cdv=392
http://www.leokanner.nl/Portals/712/portal.css?cdv=392
http://www.leokanner.nl/Telerik.Web.UI.WebResource.axd?compress=...

Speed test – Javascript

Javascript

Error! Too many javascript files found which slows down the page load on the website.

http://www.leokanner.nl/Resources/libraries/jQuery/01_09_01/jquery.js?cdv=159
http://www.leokanner.nl/Resources/libraries/jQuery-Migrate/01_02_01/jquery-migrate.js?cdv=159
http://www.leokanner.nl/WebResource.axd?d=tszc3Hl00rpRnIU38dKwSfPv26y_oBy__Vx9mWdD4ZlVumKyVdmL7XMj17UpCxMKnJhb0fX3kyRjmsbi0&t=635793089982061497
http://www.leokanner.nl/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ScriptManager_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3anl-NL%3a93a6b8ed-f453-4cc5-9080-8017894b33b0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2013.2.717.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3anl-NL%3aa713c6a1-0827-4380-88eb-63855ca4c2d9%3a16e4e7cd%3af7645509%3a24ee1bba%3ae330518b%3a2003d0b8%3a1e771326%3ac8618e41%3af46195d3%3a4cacbc31
http://www.leokanner.nl/js/dnn.js?cdv=159
http://www.leokanner.nl/js/dnn.servicesframework.js?cdv=159
http://www.leokanner.nl/js/dnncore.js?cdv=159
http://www.leokanner.nl/Resources/Search/SearchSkinObjectPreview.js?cdv=159
http://www.leokanner.nl/Resources/Shared/scripts/initWidgets.js

File size of all javascript files combined

875.38KB

Javascript minifying

You can save 39.6KB (47% compression) on the analysed URL by minifying the javascript files.

Speed test – CSS

CSS

Error! Too many CSS files detected that slows down the page load.

http://www.leokanner.nl/Portals/_default/default.css?cdv=159
http://www.leokanner.nl/DesktopModules/HTML/module.css?cdv=159
http://www.leokanner.nl/Resources/Search/SearchSkinObjectPreview.css?cdv=159
http://www.leokanner.nl/Portals/_default/Skins/LeoKanner/skin.css?cdv=159
http://www.leokanner.nl/Portals/_default/Containers/LeoKanner/container.css?cdv=159
http://www.leokanner.nl/Portals/712/portal.css?cdv=159

File size of all css files combined

147.28KB

CSS minifying

You can save 7.2KB (32% compression) on the analysed URL by minifying the CSS files.

By minifying http://www.leokanner.nl/.. /default.css?cdv=392 you can save 5KB (30% compression rate)
By minifying http://www.leokanner.nl/.. /skin.css?cdv=392 you can save 2KB (47% compression rate)
By minifying http://www.leokanner.nl/Portals/712/portal.css?cdv=392 you can save 114B (11% compression rate)
By minifying http://www.leokanner.nl/.. /SearchSkinObjectPreview.css?cdv=392 you can save 114B (16% compression rate)

Speed test – Compression

Uncompressed size of the of the HTML

40.46KB

Gzip compression

Your site uses compression.

Speed test – Browser cache

Number of static resources (image, JS, CSS)

Browser cache

The browser cache is not set correctly for all elements.

URL	Duration
http://www.leokanner.nl/.. /logo.png	Expiry time is not specified
http://www.leokanner.nl/.. /header2.png	Expiry time is not specified
http://www.leokanner.nl/.. /left_hoek.png	Expiry time is not specified
http://www.leokanner.nl/.. /locatie_foto.jpg	Expiry time is not specified
http://www.leokanner.nl/.. /login.png	Expiry time is not specified
http://www.leokanner.nl/.. /Voorpagina.png	Expiry time is not specified
http://www.google-analytics.com/ga.js	2 hours

Speed test – Images

File size of all images combined

308.24KB

Image optimisation

You can save 8.9KB (44% compression) by optimising the images below:

By lossless compressing the http://www.leokanner.nl/.. /locatie_foto.jpg you can save 8.7KB (45%) data.
By lossless compressing the http://www.leokanner.nl/.. /login.png you can save 173B (20%) data.

Links

We found a total of 17 different links.
Internal links: 15
External links: 2

External links:

Link text (anchor)	Link strength
Intranet
AED

Internal links:

Link text (anchor)	Link strength
http://www.leokanner.nl/Login?returnurl=%2f
http://www.leokanner.nl/Home.aspx
Home
Wie zijn wij
Nieuws
Contact
Informatie
Aanmelden
Werken bij
Leo Kannerschool SO
De Parachute SO
Leo Kannerschool VSO
Leo Kannercollege VSO
PC Hooftcollege VSO
ESB Curium-LUMC

Website security

84.241.177.42

External hidden links

Good! No hidden external links found

Looking for eval()

Good! No eval(bas64_decode()) scripts are found

Checking for XSS vulnerability

No XSS vulnerability found

Email encryption

Good! We have not found any unencrypted email addresses.

Sites on same ip

littleuniverseschool.nl

fabritiusschool.nl

samenwerkingsschoolmeeroevers.nl

olvvanlourdesschool.nl

dewitteschoolarnhem.nl

propschool.nl

dreesschool.nl

basisschooldelta.nl

educatief-centrum.nl

de-akkerschool.nl

Icons

Favicon

Error! No favicon is found. Using favicon helps to build a better brand quicker.

Order of Heading elements on mobile by position

H1 : Prof. Dr. Leo Kanner Onderwijsgroep , ( 231px from top )
H5 : , ( 299px from top )
H4 : AED, ( 731px from top )
H4 : 45 jaar Prof. Dr. Leo Kanner, ( 929px from top )

Typos

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SEO report of leokannerschool.nl