SEO report of dockerbook.com
The Docker Book
www.dockerbook.com/
A book about Docker.
Tasks
- Select one version of your site as main and make a redirect from other versions to that one.
- Avoid using deprecated HTML tags.
SEO
URL
Domain : www.dockerbook.com/
Character length : 19
Title
The Docker Book
Description
A book about Docker.
Keywords (meta keywords)
docker,docker book,containers,virtualization,testing,devops
Error! Using “meta keywords” is meaningless in a while.
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.
Social
Social Engagement
Linkedin52
Facebook Share0
Facebook Comments0
Content
Doctype
HTML 5
Encoding
Perfect! The character encoding is set: UTF-8.
Language
We have found the language localisation: ”en”.
Title
The Docker Book
Character length : 15
Good! The title’s length is between 10 and 70 characters.
Character length : 15
Good! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 12%
Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.
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 | 8 | 4 | 1 | 3 | 0 |
Heading structure in the source code
- <H1> The Docker Book
- <H2> Containerization is the new virtualization
- <H2> Simple
- <H2> Scalable
- <H2> Up-to-date
- <H2> Different
- <H2> Buy the book
- <H3> PDF
- <H3> ePub
- <H3> Mobi/Kindle
- <H3> Bundle of all formats
- <H2> Table of Contents
- <H2> James Turnbull
- <H4> Sign up for updates!
- <H5> Follow Us
- <H5> Stay Updated
- <H5>
Word cloud
- docker18
- book10
- updates7
- buy7
- edition6
- unlimited4
- books4
- puppet4
- james4
- pdf3
- pro3
- author3
- epub3
- sign3
- kindle/mobi2
- follow2
- up-to-date2
- mailing2
- date2
- updated2
- open2
- source2
- tool2
- skip2
- linux2
- list2
- all2
- virtualization2
- container2
- new2
Keyword matrix
| word | title | descriptions | heading |
|---|---|---|---|
| docker | |||
| book | |||
| updates | |||
| buy | |||
| edition | |||
| unlimited |
Two Word cloud
- with docker3
- pdf edition2
- mailing list2
- updates buy2
- kindle/mobi edition2
- open source2
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.
Good! Every image has an alternative text attributes set on this website.
Good! Every image has an alternative text attributes set on this website.
Readability
Flesch–Kincaid Grade Level
5.00
Flesch Reading Ease
68.00
Coleman Liau Index
12.00
Automated Readability Index (ARI)
3.30
Dale–Chall Readability
6.50
SMOG Index
8.00
Spache Readibility
5.00
Number of letters
1815
Number of words
383
Number of sentences
81
Average words per sentences
5
Number of syllables
607
Syllables in words
608
Average syllables in words
1.58
Number of words in first three syllables
55
Percentage of word / syllables
14.36
Words not in Dale-Chall easy-word list
153
Words not in Spache easy-word list
113
Technologies
Mobile optimization
This website is optimal for mobile devices!
Detected applications
 | Deployd | JavaScript Frameworks |
 | Gauges | Analytics |
 | Google Analytics | Analytics |
 | Google Font API | Font Scripts |
 | HeadJS | JavaScript Frameworks |
 | Mailchimp | Marketing Automation |
 | Modernizr | JavaScript Frameworks |
 | Twitter Bootstrap | Web Frameworks |
 | jQuery | JavaScript Frameworks |
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
1,396 ms
Table layout
Good! No nested tables found.
Number of HTTP resources
30
Number of source domains
7
Render blocking resources
The elements below are blocking the “above the fold” rendering.
List of render blocking javascript files
List of render blocking javascript files
- https://dockerbook.com/.. /modernizr-2.6.2-respond-1.1.0.min.js
- https://dockerbook.com/assets/js/jquery.min.2.0.3.js
- https://dockerbook.com/assets/js/windows-fix.js
- https://dockerbook.com/assets/css/bootstrap.min.css
- https://dockerbook.com/assets/css/bootstrap-modal.css
- https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,300,300it...
- https://fonts.googleapis.com/css?family=Fredericka+the+Great
- https://dockerbook.com/assets/css/different_base.css
- https://dockerbook.com/assets/css/colors/black-white.css
- https://dockerbook.com/assets/css/pricing.css
Speed test – Javascript
Javascript
Error! Too many javascript files found which slows down the page load on the website.
- https://www.dockerbook.com/assets/js/modernizr-2.6.2-respond-1.1.0.min.js
- https://www.dockerbook.com/assets/js/jquery.min.2.0.3.js
- https://www.dockerbook.com/assets/js/windows-fix.js
- https://www.dockerbook.com/assets/js/bootstrap.min.js
- https://www.dockerbook.com/assets/js/jquery.different_base.js
- https://www.dockerbook.com/assets/js/bootstrap-modalmanager.js
- https://www.dockerbook.com/assets/js/bootstrap-modal.js
File size of all javascript files combined
414.16KB
Javascript minifying
You can save 3KB (31% 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.
- https://www.dockerbook.com/assets/css/bootstrap.min.css
- https://www.dockerbook.com/assets/css/bootstrap-modal.css
- https://www.dockerbook.com/assets/css/different_base.css
- https://www.dockerbook.com/assets/css/colors/black-white.css
- https://www.dockerbook.com/assets/css/pricing.css
File size of all css files combined
214.14KB
CSS minifying
You can save 3.5KB (26% compression) on the analysed URL by minifying the CSS files.
- By minifying https://dockerbook.com/assets/css/different_base.css you can save 2.7KB (25% compression rate)
- By minifying https://dockerbook.com/assets/css/bootstrap-modal.css you can save 423B (32% compression rate)
- By minifying https://dockerbook.com/assets/css/colors/black-white.css you can save 348B (27% compression rate)
Speed test – Compression
Uncompressed size of the of the HTML
21.79KB
Gzip compression
Error! By using Gzip you can save 2.5KB (67% compression) on your site.
- By compressing https://secure.gaug.es/track.js you can save 2.5KB (67% compression rate)
Speed test – Browser cache
Number of static resources (image, JS, CSS)
7
Browser cache
The browser cache is not set correctly for all elements.
| URL | Duration |
|---|---|
| https://secure.gaug.es/track.js | Expiry time is not specified |
| https://tdb.dpdcart.com/dpd.js | Expiry time is not specified |
| https://www.google-analytics.com/analytics.js | 2 hours |
Speed test – Images
File size of all images combined
34.60KB
Image optimisation
You can save 18.5KB (55% compression) by optimising the images below:
- By lossless compressing the https://dockerbook.com/assets/images/james.jpg you can save 18.5KB (55%) data.
Links
We found a total of 35 different links.
Internal links: 13
External links: 22
Internal links: 13
External links: 22
External links:
Internal links:
| Link text (anchor) | Link strength |
|---|---|
| Skip to Navigation | |
| Skip to Content | |
| Home | |
| Buy the book | |
| What's in the book? | |
| Code | |
| Errata | |
| Sign up for updates! | |
| Author | |
| Contact | |
| Follow | |
| https://www.dockerbook.com/# | |
| The Docker Book |
Website security
IP
104.236.224.80
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
Icons
Favicon
Good! The website uses favicon.
Order of Heading elements on mobile by position
- H4 : Sign up for updates!, ( 0px from top )
- H1 : The Docker Book, ( 76.59375px from top )
- H2 : Containerization is the new virtualization, ( 126.59375px from top )
- H2 : Simple, ( 259.1875px from top )
- H2 : Scalable, ( 395.1875px from top )
- H2 : Up-to-date, ( 575.1875px from top )
- H2 : Different, ( 711.1875px from top )
- H2 : Buy the book, ( 824.1875px from top )
- H3 : PDF, ( 965.1875px from top )
- H3 : ePub, ( 1418.1875px from top )
Typos
ockerbook.com, dxockerbook.com, xockerbook.com, dsockerbook.com, sockerbook.com, dwockerbook.com, wockerbook.com, deockerbook.com, eockerbook.com, drockerbook.com, rockerbook.com, dfockerbook.com, fockerbook.com, dvockerbook.com, vockerbook.com, dcockerbook.com, cockerbook.com, dckerbook.com, doickerbook.com, dokckerbook.com, dkckerbook.com, dolckerbook.com, dlckerbook.com, dockerbook.com, dckerbook.com, dopckerbook.com, dpckerbook.com, do9ckerbook.com, d9ckerbook.com, do0ckerbook.com, d0ckerbook.com, dokerbook.com, docxkerbook.com, doxkerbook.com, docskerbook.com, doskerbook.com, dockerbook.com, dokerbook.com, docdkerbook.com, dodkerbook.com, docfkerbook.com, dofkerbook.com, docvkerbook.com, dovkerbook.com, doc kerbook.com, do kerbook.com, docerbook.com, dockuerbook.com, docuerbook.com, dockjerbook.com, docjerbook.com, dockmerbook.com, docmerbook.com, docklerbook.com, doclerbook.com, dockoerbook.com, docoerbook.com, dockrbook.com, dockewrbook.com, dockwrbook.com, dockesrbook.com, docksrbook.com, dockerbook.com, dockrbook.com, dockedrbook.com, dockdrbook.com, dockefrbook.com, dockfrbook.com, dockerrbook.com, dockrrbook.com, docke3rbook.com, dock3rbook.com, docke4rbook.com, dock4rbook.com, dockebook.com, dockerebook.com, dockeebook.com, dockerdbook.com, dockedbook.com, dockerfbook.com, dockefbook.com, dockergbook.com, dockegbook.com, docker4,book.com, docke4,book.com, dockertbook.com, docketbook.com, docker5book.com, docke5book.com, dockerook.com, dockerbvook.com, dockervook.com, dockerbfook.com, dockerfook.com, dockerbgook.com, dockergook.com, dockerbook.com, dockerook.com, dockerbhook.com, dockerhook.com, dockerbnook.com, dockernook.com, dockerb ook.com, docker ook.com, dockerbok.com, dockerboiok.com, dockerbiok.com, dockerbokok.com, dockerbkok.com, dockerbolok.com, dockerblok.com, dockerbook.com, dockerbok.com, dockerbopok.com, dockerbpok.com, dockerbo9ok.com, dockerb9ok.com, dockerbo0ok.com, dockerb0ok.com, dockerbok.com, dockerbooik.com, dockerboik.com, dockerbookk.com, dockerbokk.com, dockerboolk.com, dockerbolk.com, dockerbook.com, dockerbok.com, dockerboopk.com, dockerbopk.com, dockerboo9k.com, dockerbo9k.com, dockerboo0k.com, dockerbo0k.com, dockerboo.com, dockerbooku.com, dockerboou.com, dockerbookj.com, dockerbooj.com, dockerbookm.com, dockerboom.com, dockerbookl.com, dockerbool.com, dockerbooko.com, dockerbooo.com
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