recommenderbook.net

Tasks

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.recommenderbook.net/

Character length : 24

Title

Recommender Systems – Introduction and Handbook – Supporting Website

Description

Supporting website for the text books 'Recommender Systems An Introduction', 'Persuasive Recommender Systems' and 'Recommender Systems Handbook

Keywords (meta keywords)

recommender system, recommender systems, introduction, book, Dietmar Jannach, Gerhard Friedrich, Markus Zanker, Alexander Felfernig, collaborative filtering, content based filtering, supporting websit

Error! Using “meta keywords” is meaningless in a while.

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://recommenderbook.net/robots.txt

User-agent	Disallowed for the search engines
*	/administrator/ /bin/ /cache/ /cli/ /components/ /includes/ /installation/ /language/ /layouts/ /libraries/ /logs/ /modules/ /plugins/ /tmp/

Social

Social Engagement

No info found.

Content

Doctype

XHTML 1.0 Transitional

Encoding

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

Language

We have found the language localisation: ”en”.

Title

Recommender Systems – Introduction and Handbook – Supporting Website

Character length : 68

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

Text / HTML ratio

Ratio : 9%

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
6	1	3	0	0	0

Heading structure in the source code

<H1>
<H2> Nav view search
<H3> Navigation
<H3> Search
<H3> Main Menu
<H1> Welcome to the Supporting Website for
<H1> "Recommender Systems - An Introduction"
<H1> "Recommender Systems Handbook"
<H1> and
<H1> "Persuasive Recommender Systems - Conceptual Background and Implications"

Word cloud

recommender9
systems9
handbook3
introduction3
ordered3
available3
edition3
persuasive3
main2
implications2
search2
background2
conceptual2
navigation2
welcome2

Keyword matrix

word	title	descriptions	heading
recommender
systems
handbook
introduction
ordered
available

Two Word cloud

recommender systems5
introduction recommender2
persuasive recommender2

Three Word cloud

introduction recommender systems2
persuasive recommender systems2

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 15 images on this web page.

Alternate attributes for the following 2 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.

http://www.recommenderbook.net/.. /springer_logo.png (1 occurrences)

Readability

Flesch–Kincaid Grade Level

11.40

Flesch Reading Ease

20.70

Coleman Liau Index

12.00

Automated Readability Index (ARI)

10.40

Dale–Chall Readability

9.40

SMOG Index

9.70

Spache Readibility

3.40

Number of letters

670

Number of words

106

Number of sentences

Average words per sentences

Number of syllables

228

Syllables in words

229

Average syllables in words

2.15

Number of words in first three syllables

Percentage of word / syllables

31.13

Words not in Dale-Chall easy-word list

Words not in Spache easy-word list

Technologies

Mobile optimization

This website is optimal for mobile devices!

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

Good! The website uses printer-friendly CSS.

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

735 ms

Table layout

Good! No nested tables found.

Render blocking resources

Good! No render blocking elements found!

Speed test – Javascript

Javascript

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

http://www.recommenderbook.net/media/jui/js/jquery.min.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/jui/js/jquery-noconflict.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/jui/js/jquery-migrate.min.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/system/js/caption.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/system/js/mootools-core.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/system/js/core.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/media/system/js/mootools-more.js?e544afc8d6b0a99c52ef26a0eb8edcc3
http://www.recommenderbook.net/templates/beez_20/javascript/md_stylechanger.js
http://www.recommenderbook.net/templates/beez_20/javascript/hide.js

File size of all javascript files combined

0.00

Javascript minifying

Great! The Javascript files are minified.

Speed test – CSS

CSS

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

http://www.recommenderbook.net/templates/system/css/system.css
http://www.recommenderbook.net/templates/beez_20/css/position.css
http://www.recommenderbook.net/templates/beez_20/css/layout.css
http://www.recommenderbook.net/templates/beez_20/css/print.css
http://www.recommenderbook.net/templates/beez_20/css/general.css
http://www.recommenderbook.net/templates/beez_20/css/general_mozilla.css
http://www.recommenderbook.net/templates/beez_20/css/personal.css

File size of all css files combined

0.00

CSS minifying

Great! The CSS elements are minified.

Speed test – Compression

Uncompressed size of the of the HTML

0.00

Gzip compression

Your site uses compression.

Speed test – Browser cache

Browser cache

The browser cache is set correctly for all elements.

Speed test – Images

File size of all images combined

0.00

Image optimisation

All images are optimized.

Traffic

Alexa

10173544

Links

We found a total of 20 different links.
Internal links: 11
External links: 9

External links:

Link text (anchor)	Link strength
http://www.cambridge.org/.. /recommender-systems-introduction
http://www.amazon.com/.. /ref=sr_1_1?ie=UTF8&s=books&qid=128436798...
http://search.barnesandnoble.com/.. /?itm=1&USRI=recommender+systems+introduc...
http://www.ebooks.com/.. /jannach-dietmar-zanker-markus-felfernig-...
http://www.amazon.co.jp/dp/4320122968
http://item.jd.com/11256780.html
http://www.springer.com/computer/ai/book/978-0-387-85819-7
https://www.springer.com/computer/ai/book/978-1-4614-4701-6
https://www.amazon.de/.. /1461447011

Internal links:

Link text (anchor)	Link strength
Skip to content
Jump to main navigation and login
Welcome
Recommender Systems An Introduction
Recommender Systems Handbook
Persuasive Recommender Systems
Teaching Material
Feedback
http://www.recommenderbook.net/.. /description
http://www.recommenderbook.net/.. /about-this-book
http://www.recommenderbook.net/.. /persuasive-about-book

Website security

143.205.174.183

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

test-informations.info

Icons

Favicon

Good! The website uses favicon.

Order of Heading elements on mobile by position

H2 : Nav view search, ( -2000px from top )
H3 : Navigation, ( -1990px from top )
H3 : Search, ( -1990px from top )
H1 : , ( 0px from top )
H3 : Font size, ( 8px from top )
H1 : Welcome to the Supporting Website for , ( 185px from top )
H3 : Main Menu, ( 190px from top )
H1 : "Recommender Systems - An Introduction" , ( 247px from top )
H1 : "Recommender Systems Handbook", ( 309px from top )
H1 : and , ( 371px from top )
H1 : "Persuasive Recommender Systems - Conceptual Background and Implications", ( 412px from top )

Typos

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SEO report of recommenderbook.net

Recommender Systems – Introduction and Handbook – Supporting ...

Tasks

SEO

Social

Content

Readability

Technologies

Speed test

Speed test – Javascript

Speed test – CSS

Speed test – Compression

Speed test – Browser cache

Speed test – Images

Traffic

Links

External links:

Internal links:

Website security

Sites on same ip