dataschool.io

Tasks

Avoid using deprecated HTML tags.

SEO

URL

Domain : www.dataschool.io/

Character length : 18

Title

Data School

Description

Launch a data science career!

Keywords (meta keywords)

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

Open Graph Protocol

Good! The OG (Open Graph) protocol is set on this website.

site_name: Data School
type: website
title: Data School
description: Launch a data science career!
url: http://www.dataschool.io/

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://dataschool.io/robots.txt

User-agent	Disallowed for the search engines
*	/ghost/

Social

Social Engagement

Linkedin4

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

Data School

Character length : 11

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.

Headings

H1	H2	H3	H4	H5	H6
0	0	7	0	0	4

Heading structure in the source code

<H6> About
<H6> Popular Posts
<H6> Data School Courses
<H6> Join my 30,000+ YouTube subscribers
<H3> Quick reference to Python in a single script (and notebook) · October 13, 2016 · Python
<H3> Top 8 resources for learning data analysis with pandas · May 16, 2016 · Python
<H3> Easier data analysis in Python with pandas (video series) · May 10, 2016 · Python tutorial
<H3> Top content from two years of Data School · March 24, 2016
<H3> Guide to an in-depth understanding of logistic regression · February 21, 2016 · machine learning Python tutorial
<H3> How to get better at data science · September 6, 2015 · Python machine learning
<H3> Introduction to machine learning in Python with scikit-learn (video series) · July 18, 2015 · machine learning tutorial Python popular

Word cloud

python9
data7
learning5
machine4
tutorial3
school3
analysis2
science2
video2
popular2
top2
pandas2
series2

Keyword matrix

word	title	descriptions	heading
python
data
learning
machine
tutorial
school

Two Word cloud

data analysis2

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.

Readability

Flesch–Kincaid Grade Level

3.90

Flesch Reading Ease

82.20

Coleman Liau Index

8.20

Automated Readability Index (ARI)

2.10

Dale–Chall Readability

7.10

SMOG Index

9.40

Spache Readibility

5.00

Number of letters

629

Number of words

154

Number of sentences

Average words per sentences

Number of syllables

211

Syllables in words

216

Average syllables in words

1.37

Number of words in first three syllables

Percentage of word / syllables

13.64

Words not in Dale-Chall easy-word list

Words not in Spache easy-word list

Technologies

Deprecated HTML elements

Good! No deprecated HTML tags are detected.

Redirection (www / not www)

Good! The web address is accessible only in one version. The version without www is redirected to the version with 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.

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

https://app.getresponse.com/view_webform_v2.js?u=1NVQ&webforms_id=64...

List of render blocking css files

http://fonts.googleapis.com/css?family=Open+Sans:300italic,700italic...
http://fonts.googleapis.com/css?family=Bree+Serif
http://www.dataschool.io/assets/styles/crisp.css?v=864c8d10a5
http://www.dataschool.io/assets/styles/prism2.css?v=864c8d10a5
https://app.getresponse.com/.. /gr_wf_v2.css

Speed test – Javascript

Javascript

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

File size of all javascript files combined

230.94KB

Javascript minifying

Great! The Javascript files are minified.

Speed test – CSS

CSS

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

http://www.dataschool.io/assets/styles/crisp.css?v=349e25de14

File size of all css files combined

281.46KB

CSS minifying

You can save 1.3KB (24% compression) on the analysed URL by minifying the CSS files.

By minifying https://app.getresponse.com/.. /style.css you can save 494B (44% compression rate)
By minifying http://www.dataschool.io/assets/styles/crisp.css?v=864c8d10a5 you can save 322B (23% compression rate)
By minifying https://app.getresponse.com/.. /gr_wf_v2.css you can save 257B (14% compression rate)
By minifying http://www.dataschool.io/assets/styles/prism2.css?v=864c8d10a5 you can save 208B (24% compression rate)

Speed test – Compression

Uncompressed size of the of the HTML

225.12KB

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
https://app.getresponse.com/.. /gr_wf_v2.css	Expiry time is not specified
https://ls.getresponse.com/log/webforms	Expiry time is not specified
http://www.google-analytics.com/analytics.js	2 hours

Speed test – Images

File size of all images combined

9.57KB

Image optimisation

You can save 1.7KB (20% compression) by optimising the images below:

By lossless compressing the http://www.dataschool.io/content/images/2014/12/DS_FINAL.png you can save 1.7KB (20%) data.

Links

We found a total of 26 different links.
Internal links: 17
External links: 9

External links:

Link text (anchor)	Link strength
https://www.facebook.com/DataScienceSchool
https://twitter.com/justmarkham
https://linkedin.com/in/justmarkham
https://github.com/justmarkham
https://youtube.com/user/dataschool
Join my 30,000+ YouTube subscribers
Ghost
Crisp
Kathy Qian

Internal links:

Link text (anchor)	Link strength
http://www.dataschool.io
http://www.dataschool.io/rss
About
Popular Posts
Data School Courses
Quick reference to Python in a single script (and notebook)
Python
Top 8 resources for learning data analysis with pandas
Easier data analysis in Python with pandas (video series)
tutorial
Top content from two years of Data School
Guide to an in-depth understanding of logistic regression
machine learning
How to get better at data science
Introduction to machine learning in Python with scikit-learn (video series)
popular
Older →

Website security

190.93.245.35

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.

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Icons

Favicon

Good! The website uses favicon.

Typos

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SEO report of dataschool.io