codebook.org

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.codebook.org/

Character length : 17

Title

Code Book Cipher Challenge Solutions

Description

Presentation of the solutions to Simon Singh's Cipher Challenge.

Keywords (meta keywords)

code, book, solution, solutions, cipher, challenge, simon, singh, RSA, DES, cracking

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

Error! Hyphen (-) is a better solution than underscore (_) in the URLs

http://www.codebook.org/codebook_solution.html ("HTML")

Search engine friendly URLs

Good! The website uses SEO friendly URLs.

Checking the robots.txt file

The robots.txt file is missing!

Social

Social Engagement

No info found.

Content

Doctype

Missing doctype element

Encoding

Error! The character encoding setting is missing!

Language

Error! No language localization is found.

Title

Code Book Cipher Challenge Solutions

Character length : 36

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

Text / HTML ratio

Ratio : 43%

Good! The text / code ratio is between 25 and 70 percent.

Headings

H1	H2	H3	H4	H5	H6
1	3	0	0	0	0

Heading structure in the source code

<H1> The Code Book Cipher Challenge Solution Page
<H2> How We Cracked the Code Book Ciphers
<H2> Links
<H2> Other info

Word cloud

report4
code3
page3
format3
book3
cipher3
challenge3
singh's2
simon2
web2
cracked2
stage2
solution2

Keyword matrix

word	title	descriptions	heading
report
code
page
format
book
cipher

Two Word cloud

cipher challenge2
code book2

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 0 images on this web page.

Good! Every image has an alternative text attributes set on this website.

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

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

150 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 css files

http://www.codebook.org/codebook.css

Speed test – Javascript

Javascript

Good! Just a few javascript files are detected on the website.

File size of all javascript files combined

0.00

Javascript minifying

Great! The Javascript files are minified.

Speed test – CSS

CSS

Good! Just a few CSS files are used on this website.

File size of all css files combined

683.00B

CSS minifying

Great! The CSS elements are minified.

Speed test – Compression

Uncompressed size of the of the HTML

1.83KB

Gzip compression

Error! By using Gzip you can save 820B (51% compression) on your site.

By compressing http://www.codebook.org you can save 820B (51% compression rate)
By compressing http://www.codebook.org/codebook.css you can save 146B (45% compression rate)

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.codebook.org/codebook.css	Expiry time is not specified

Speed test – Images

File size of all images combined

0.00

Image optimisation

All images are optimized.

Links

We found a total of 6 different links.
Internal links: 4
External links: 2

External links:

Link text (anchor)	Link strength
Simon Singh's
Cipher Challenge

Internal links:

Link text (anchor)	Link strength
HTML
Stage 10
Archive
in Swedish

Website security

212.247.27.201

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

Warning! The website contains at least one unencrypted email address.

Sites on same ip

stormtech.se

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 : The Code Book Cipher Challenge Solution Page, ( 8px from top )
H2 : How We Cracked the Code Book Ciphers, ( 293.34375px from top )
H2 : Links, ( 595.15625px from top )
H2 : Other info , ( 719.96875px from top )

Typos

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SEO report of codebook.org