SEO report of chem-learn.com
Chem-Learn – Smart Tools for Chemistry Learning
www.chem-learn.com/
Error! The "meta description" is missing, the page has no summary description!
Tasks
- Avoid using deprecated HTML tags.
SEO
URL
Domain : www.chem-learn.com/
Character length : 19
Title
Chem-Learn – Smart Tools for Chemistry Learning
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://chem-learn.com/robots.txt
https://chem-learn.com/robots.txt
| User-agent | Disallowed for the search engines |
|---|---|
| * |
|
Social
Social Engagement
No info found.
Content
Doctype
HTML 5
Encoding
Perfect! The character encoding is set: UTF-8.
Language
We have found the language localisation: ”en”.
Title
Chem-Learn – Smart Tools for Chemistry Learning
Character length : 53
Good! The title’s length is between 10 and 70 characters.
Character length : 53
Good! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 1%
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 | 5 | 1 | 0 | 0 | 0 |
Heading structure in the source code
- <H1> Chem-Learn
- <H2> Home
- <H2> News
- <H3> Welcome
- <H2> Find Us
- <H2> Mission
- <H2> Search
Word cloud
- chemistry4
- tools3
- chem-learn3
- welcome3
- search3
- all2
- january2
- portal2
- news2
- smart2
- home2
- content2
- learning2
Keyword matrix
| word | title | descriptions | heading |
|---|---|---|---|
| chemistry | |||
| tools | |||
| chem-learn | |||
| welcome | |||
| search | |||
| all |
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.
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.
Readability
Flesch–Kincaid Grade Level
4.90
Flesch Reading Ease
65.40
Coleman Liau Index
12.00
Automated Readability Index (ARI)
2.90
Dale–Chall Readability
7.10
SMOG Index
7.30
Spache Readibility
5.00
Number of letters
1340
Number of words
277
Number of sentences
91
Average words per sentences
3
Number of syllables
453
Syllables in words
455
Average syllables in words
1.64
Number of words in first three syllables
46
Percentage of word / syllables
16.61
Words not in Dale-Chall easy-word list
122
Words not in Spache easy-word list
67
Technologies
Mobile optimization
This website is optimal for mobile devices!
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 not fast enough: 13.2 seconds have passed until the page started to load.
Loading time
2,730 ms
Table layout
Good! No nested tables found.
Number of HTTP resources
46
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
- http://www.chem-learn.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
- http://www.chem-learn.com/.. /jquery-migrate.min.js?ver=1.4.1
- https://cdn.datatables.net/.. /jquery.dataTables.min.js?ver=4.9.8
- https://cdn.datatables.net/.. /dataTables.buttons.min.js?ver=4.9.8
- http://cdn.datatables.net/.. /buttons.colVis.min.js?ver=4.9.8
- http://cdn.datatables.net/.. /buttons.print.min.js?ver=4.9.8
- http://cdnjs.cloudflare.com/.. /pdfmake.min.js?ver=4.9.8
- http://cdnjs.cloudflare.com/.. /vfs_fonts.js?ver=4.9.8
- http://cdnjs.cloudflare.com/.. /jszip.min.js?ver=4.9.8
- http://cdn.datatables.net/.. /buttons.html5.min.js?ver=4.9.8
- https://cdn.datatables.net/.. /dataTables.select.min.js?ver=4.9.8
- https://cdn.datatables.net/.. /dataTables.fixedHeader.min.js?ver=4.9.8
- https://cdn.datatables.net/.. /dataTables.fixedColumns.min.js?ver=4.9.8...
- https://cdn.datatables.net/.. /dataTables.responsive.min.js?ver=4.9.8
- http://www.chem-learn.com/.. /igsv-datatables.js?ver=4.9.8
- http://www.google.com/jsapi?ver=4.9.8
- http://www.chem-learn.com/.. /igsv-gvizcharts.js?ver=4.9.8
- http://www.google.com/.. /?file=visualization&v=1.0&packages=annot...
- http://www.google.com/.. /dygraph,format+en,default+en,ui+en,timel...
- http://www.chem-learn.com/.. /styles.css?ver=5.0.5
- https://cdn.datatables.net/.. /jquery.dataTables.min.css?ver=4.9.8
- https://cdn.datatables.net/.. /buttons.dataTables.min.css?ver=4.9.8
- https://cdn.datatables.net/.. /select.dataTables.min.css?ver=4.9.8
- https://cdn.datatables.net/.. /fixedHeader.dataTables.min.css?ver=4.9.8...
- https://cdn.datatables.net/.. /fixedColumns.dataTables.min.css?ver=4.9....
- https://cdn.datatables.net/.. /responsive.dataTables.min.css?ver=4.9.8
- https://fonts.googleapis.com/css?family=Libre+Franklin%3A300%2C300i%2...
- http://www.chem-learn.com/.. /style.css?ver=4.9.8
- http://www.chem-learn.com/.. /colors-dark.css?ver=1.0
- http://www.google.com/.. /ui+en,table+en,controls+en,annotationcha...
- http://ajax.googleapis.com/.. /annotatedtimeline.css
Speed test – Javascript
Javascript
Error! Too many javascript files found which slows down the page load on the website.
- http://www.chem-learn.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
- http://www.chem-learn.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1
- http://www.chem-learn.com/wp-content/plugins/contact-form-7/includes/js/jquery.form.min.js?ver=3.51.0-2014.06.20
- http://www.chem-learn.com/wp-content/plugins/contact-form-7/includes/js/scripts.js?ver=4.7
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/assets/js/skip-link-focus-fix.js?ver=1.0
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/assets/js/navigation.js?ver=1.0
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/assets/js/global.js?ver=1.0
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/assets/js/jquery.scrollTo.js?ver=2.1.2
- http://www.chem-learn.com/wp-includes/js/wp-embed.min.js?ver=4.7.4
- http://www.chem-learn.com/wp-includes/js/wp-a11y.min.js?ver=4.7.4
- http://www.chem-learn.com/wp-includes/js/wp-custom-header.min.js?ver=4.7.4
File size of all javascript files combined
3.41MB
Javascript minifying
You can save 3.8KB (31% compression) on the analysed URL by minifying the javascript files.
Speed test – CSS
CSS
Good! Just a few CSS files are used on this website.
- http://www.chem-learn.com/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=4.7
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/style.css?ver=4.7.4
- http://www.chem-learn.com/wp-content/themes/twentyseventeen/assets/css/colors-dark.css?ver=1.0
File size of all css files combined
178.62KB
CSS minifying
You can save 4.4KB (24% compression) on the analysed URL by minifying the CSS files.
- By minifying http://www.chem-learn.com/.. /style.css?ver=4.9.8 you can save 4KB (26% compression rate)
- By minifying http://www.chem-learn.com/.. /colors-dark.css?ver=1.0 you can save 236B (11% compression rate)
- By minifying http://ajax.googleapis.com/.. /annotatedtimeline.css you can save 174B (17% compression rate)
Speed test – Compression
Uncompressed size of the of the HTML
65.04KB
Gzip compression
Your site uses compression.
Speed test – Browser cache
Number of static resources (image, JS, CSS)
26
Browser cache
The browser cache is not set correctly for all elements.
| URL | Duration |
|---|---|
| http://www.chem-learn.com/wp-content/uploads/2017/01/leaf.jpg | Expiry time is not specified |
| http://www.chem-learn.com/wp-content/uploads/2017/01/logo.png | Expiry time is not specified |
| http://ajax.googleapis.com/.. /annotatedtimeline.css | 60 minutes |
| http://www.google.com/jsapi?ver=4.9.8 | 60 minutes |
| http://www.google.com/.. /?file=visualization&v=1.0&packages=annot... | 60 minutes |
Speed test – Images
File size of all images combined
1.52MB
Image optimisation
You can save 541.9KB (35% compression) by optimising the images below:
- By lossless compressing the http://www.chem-learn.com/wp-content/uploads/2017/01/leaf.jpg you can save 534.6KB (35%) data.
- By lossless compressing the http://www.chem-learn.com/wp-content/uploads/2017/01/logo.png you can save 7.3KB (30%) data.
Links
We found a total of 20 different links.
Internal links: 18
External links: 2
Internal links: 18
External links: 2
External links:
| Link text (anchor) | Link strength |
|---|---|
| Master-Up s.r.l. | |
| Proudly powered by WordPress |
Internal links:
| Link text (anchor) | Link strength |
|---|---|
| Skip to content | |
| http://www.chem-learn.com | |
| Chem-Learn | |
| Home | |
| News | |
| Services | |
| Certification | |
| Tools | |
| EChemTest | |
| G-LOREP | |
| Projects | |
| EU | |
| ECTN | |
| About Us | |
| Write Us | |
| Scroll down to content | |
| January 13, 2017January 16, 2017 | |
| Welcome |
Website security
IP
89.46.105.82
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
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 : Chem-Learn, ( 102px from top )
- H2 : Home, ( 461.8125px from top )
- H2 : News, ( 565.5625px from top )
- H3 : Welcome, ( 608.8125px from top )
- H2 : Find Us, ( 888.3125px from top )
- H2 : Mission, ( 1135.8125px from top )
- H2 : Search, ( 1290.3125px from top )
Typos
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