SEO report of chemlearning.com
ChemLearning
www.chemlearning.com/
Error! The "meta description" is missing, the page has no summary description!
Tasks
- Make the site mobile device friendly.
- 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.chemlearning.com/
Character length : 21
Title
ChemLearning
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
Error! Hyphen (-) is a better solution than underscore (_) in the URLs
- http://www.chemlearning.com/./tutorial_editor ("Tutorial Editor (Demo)")
- http://www.chemlearning.com/./tutorial_editor/?m=login ("Tutorial Editor (Login)")
Search engine friendly URLs
Good! The website uses SEO friendly URLs.
Checking the robots.txt file
There is robots.txt file.
Social
Social Engagement
No info found.
Content
Doctype
HTML 4.01 Transitional
Encoding
Perfect! The character encoding is set: UTF-8.
Language
Error! No language localization is found.
Title
ChemLearning
Character length : 12
Good! The title’s length is between 10 and 70 characters.
Character length : 12
Good! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 25%
Good! The text / code ratio is between 25 and 70 percent.
Good! The text / code ratio is between 25 and 70 percent.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
|---|---|---|---|---|---|
| 4 | 0 | 0 | 0 | 0 | 0 |
Heading structure in the source code
- <H1> About
- <H1> Tutorials
- <H1> Documentation / Tools
- <H1> ChemLearning - Info
Word cloud
- chemlearning10
- tutorials6
- tutorial4
- documentation3
- please3
- editor3
- hesitate2
- wiki2
- griss2
- download2
- source2
- interactive2
- free2
Keyword matrix
| word | title | descriptions | heading |
|---|---|---|---|
| chemlearning | |||
| tutorials | |||
| tutorial | |||
| documentation | |||
| please | |||
| editor |
404 Page
The website has no standard 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 2 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.
Technologies
Mobile optimization
Error! This website is not optimized for mobile devices... It is optimized for devices which have at least 950px wide display!
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
445 ms
Table layout
Good! No nested tables found.
Number of HTTP resources
10
Number of source domains
2
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.chemlearning.com/javascript/mootools-1_2_4-core-nc.js
- http://www.chemlearning.com/javascript/mootools-1.2.4.4-more.js
- http://www.chemlearning.com/javascript/raphael-min.js
- http://www.chemlearning.com/styles.css
Speed test – Javascript
Javascript
Good! Just a few javascript files are detected on the website.
- http://www.chemlearning.com/javascript/mootools-1_2_4-core-nc.js
- http://www.chemlearning.com/javascript/mootools-1.2.4.4-more.js
- http://www.chemlearning.com/javascript/raphael-min.js
File size of all javascript files combined
202.47KB
Javascript minifying
You can save 23KB (23% 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.chemlearning.com/styles.css
File size of all css files combined
7.42KB
CSS minifying
You can save 1.2KB (17% compression) on the analysed URL by minifying the CSS files.
- By minifying http://www.chemlearning.com/styles.css you can save 1.2KB (17% compression rate)
Speed test – Compression
Uncompressed size of the of the HTML
5.57KB
Gzip compression
Error! By using Gzip you can save 73.8KB (73% compression) on your site.
- By compressing http://www.chemlearning.com/javascript/mootools-1_2_4-core-nc.js you can save 73.8KB (73% compression rate)
- By compressing http://www.chemlearning.com/javascript/raphael-min.js you can save 34.3KB (64% compression rate)
- By compressing http://www.chemlearning.com/javascript/mootools-1.2.4.4-more.js you can save 8.4KB (70% compression rate)
- By compressing http://www.chemlearning.com/styles.css you can save 5.4KB (75% compression rate)
- By compressing http://www.chemlearning.com you can save 3.5KB (67% compression rate)
Speed test – Browser cache
Number of static resources (image, JS, CSS)
8
Browser cache
The browser cache is not set correctly for all elements.
| URL | Duration |
|---|---|
| http://www.chemlearning.com/black_okt.gif | Expiry time is not specified |
| http://www.chemlearning.com/javascript/mootools-1.2.4.4-more.js | Expiry time is not specified |
| http://www.chemlearning.com/javascript/mootools-1_2_4-core-nc.js | Expiry time is not specified |
| http://www.chemlearning.com/javascript/raphael-min.js | Expiry time is not specified |
| http://www.chemlearning.com/logo.png | Expiry time is not specified |
| http://www.chemlearning.com/logo_small.png | Expiry time is not specified |
| http://www.chemlearning.com/styles.css | Expiry time is not specified |
| http://www.google-analytics.com/analytics.js | 2 hours |
Speed test – Images
File size of all images combined
157.84KB
Image optimisation
You can save 146.1KB (93% compression) by optimising the images below:
- By lossless compressing the http://www.chemlearning.com/logo.png you can save 145.9KB (93%) data.
- By lossless compressing the http://www.chemlearning.com/logo_small.png you can save 225B (24%) data.
Links
We found a total of 10 different links.
Internal links: 5
External links: 5
Internal links: 5
External links: 5
External links:
| Link text (anchor) | Link strength |
|---|---|
| Documentation | |
| Download / Source | |
| ChemLearning Wiki | |
| http://www.sourceforge.net/projects/chemlearning | |
| ChemLearning 1.0 |
Internal links:
| Link text (anchor) | Link strength |
|---|---|
| http://www.chemlearning.com | |
| Contact | |
| Allgemeine Chemie OC II | |
| Tutorial Editor (Demo) | |
| Tutorial Editor (Login) |
Website security
IP
213.235.239.150
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
- H1 : About, ( 187px from top )
- H1 : Tutorials, ( 187px from top )
- H1 : Documentation / Tools, ( 187px from top )
- H1 : ChemLearning - Info, ( 504px from top )
Typos
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