SEO report of opentextbook.info
Open Textbook | Main / Introduction To Computer Science Homepage
www.opentextbook.info/
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.opentextbook.info/
Character length : 22
Title
Open Textbook | Main / Introduction To Computer Science Homepage
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
The robots.txt file is missing!
Social
Social Engagement
No info found.
Content
Doctype
XHTML 1.0 Transitional
Encoding
Error! The character encoding setting is missing!
Language
Error! No language localization is found.
Title
Open Textbook | Main / Introduction To Computer Science Homepage
Character length : 64
Good! The title’s length is between 10 and 70 characters.
Character length : 64
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 | 0 | 0 | 0 | 0 | 0 |
Heading structure in the source code
- <H1> Introduction To Computer Science
Word cloud
- computer6
- introduction4
- book3
- science3
- download2
- recent2
- site2
- software2
- free2
- general2
- content2
- search2
- changes2
- homepage2
- several2
- sections2
- history2
Keyword matrix
| word | title | descriptions | heading |
|---|---|---|---|
| computer | |||
| introduction | |||
| book | |||
| science | |||
| download | |||
| recent |
Two Word cloud
- recent changes2
- several sections2
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 18 images on this web page.
Alternate attributes for the following 17 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
Alternate attributes for the following 17 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
- http://opentextbook.info/icons/16x16/house.png
- http://opentextbook.info/icons/16x16/book_open.png
- http://opentextbook.info/icons/16x16/star.png
- http://opentextbook.info/icons/16x16/sum.png
- http://opentextbook.info/icons/16x16/computer.png
- http://opentextbook.info/icons/16x16/cog.png
- http://opentextbook.info/icons/16x16/drive_cd.png
- http://opentextbook.info/icons/16x16/table_key.png
- http://opentextbook.info/icons/16x16/newspaper.png
- http://opentextbook.info/icons/16x16/anchor.png
- http://opentextbook.info/icons/16x16/add.png
- http://opentextbook.info/icons/16x16/tick.png
- http://opentextbook.info/icons/16x16/world_link.png
- http://opentextbook.info/icons/16x16/script.png
- http://opentextbook.info/icons/16x16/feed.png
- http://opentextbook.info/gfx/by-nc-nd-sm.png
- http://opentextbook.info/icons/32x32/book_open.png
Technologies
Mobile optimization
Mobilnezet ellenorzes - warning
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
1,626 ms
Table layout
Good! No nested tables found.
Number of HTTP resources
20
Number of source domains
2
Render blocking resources
The elements below are blocking the “above the fold” rendering.
List of render blocking css files
List of render blocking css files
- http://www.opentextbook.info/pub/skins/pmwiki/pmwiki.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.
- http://www.opentextbook.info/pub/skins/pmwiki/pmwiki.css
File size of all css files combined
4.02KB
CSS minifying
You can save 619B (43% compression) on the analysed URL by minifying the CSS files.
- By minifying http://www.opentextbook.info/pub/skins/pmwiki/pmwiki.css you can save 619B (43% compression rate)
Speed test – Compression
Uncompressed size of the of the HTML
8.33KB
Gzip compression
Your site uses compression.
Speed test – Browser cache
Number of static resources (image, JS, CSS)
19
Browser cache
The browser cache is not set correctly for all elements.
| URL | Duration |
|---|---|
| http://opentextbook.info/gfx/by-nc-nd-sm.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/add.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/anchor.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/book_open.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/cog.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/computer.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/drive_cd.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/feed.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/house.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/newspaper.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/script.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/star.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/sum.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/table_key.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/tick.png | Expiry time is not specified |
| http://opentextbook.info/icons/16x16/world_link.png | Expiry time is not specified |
| http://opentextbook.info/icons/32x32/book_open.png | Expiry time is not specified |
| http://www.opentextbook.info/Banner.jpg | Expiry time is not specified |
| http://www.opentextbook.info/pub/skins/pmwiki/pmwiki.css | Expiry time is not specified |
Speed test – Images
File size of all images combined
32.40KB
Image optimisation
You can save 3.3KB (30% compression) by optimising the images below:
- By lossless compressing the http://opentextbook.info/gfx/by-nc-nd-sm.png you can save 2.8KB (34%) data.
- By lossless compressing the http://opentextbook.info/icons/16x16/cog.png you can save 180B (24%) data.
- By lossless compressing the http://opentextbook.info/icons/16x16/sum.png you can save 123B (21%) data.
- By lossless compressing the http://opentextbook.info/icons/16x16/house.png you can save 112B (16%) data.
- By lossless compressing the http://opentextbook.info/icons/16x16/add.png you can save 110B (16%) data.
Links
We found a total of 23 different links.
Internal links: 22
External links: 1
Internal links: 22
External links: 1
External links:
| Link text (anchor) | Link strength |
|---|---|
| http://creativecommons.org |
Internal links:
Website security
IP
198.57.243.219
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
Error! No favicon is found. Using favicon helps to build a better brand quicker.
Order of Heading elements on mobile by position
- H1 : Introduction To Computer Science, ( 169.390625px from top )
Typos
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