Prototypejs.org - SEO Checker

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Overview of the SEO Check
Meta information
53% 
Page quality
43% 
Page structure
100% 
Link structure
73% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.19 s
File size
3.50 kB
Words
134
Media files
0
Number of links
15 internal / 0 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Prototype JavaScript framework: a foundation for ambitious web applications
The page title should be shorter than 580 pixels. It is 686 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Server location: United States of America
The language is not specified in the HTML markup.
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
charsetutf-8

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Page quality

Content
(Critically important)
There are only 134 words on this page. Use at least 250 words to provide useful information.
25.4% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
4 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 20.2 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No Apple touch icon is specified.
This page does not require any JavaScript files.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

Media list

No media files were found.

Page structure

H1 heading
(Critically important)
Prototype JavaScript framework
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Prototype JavaScript framework
H2 Advanced JavaScript made simple.
H3 Weblog
H3 A foundation for ambitious web applications.
H4 Prototype 1.7.3
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are no external links on this page.

Found links on this page

LinkAttributesAnchor text
http://prototypejs.org/Home
http://prototypejs.org/learnDocumentation
http://prototypejs.org/blogWeblog
http://prototypejs.org/downloadDownload: 1.7.3 (September 22, 2015) & Git
http://prototypejs.org/learnLearn: Docs & tutorials
http://prototypejs.org/discussDiscuss: Mailing lists & IRC
http://prototypejs.org/contributeContribute: Report bugs & patches
http://prototypejs.org/blogText duplicate Weblog
/2015/09/24/prototype-1-7-3Prototype 1.7.3
/learn/class-inheritanceDefining classes and inheritance
/learn/extensionsHow Prototype extends the DOM
/learn/introduction-to-ajaxIntroduction to Ajax
http://prototypejs.org/learn/jsonUsing JSON
/learn/event-delegationEvent delegation
/learn/element-layoutUsing Element.Layout

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.19 seconds.
This page only loads 1 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (4 kB).

HTTP Response Header

NameValue
serverGitHub.com
dateTue, 24 Sep 2024 10:55:33 GMT
content-typetext/html; charset=utf-8
transfer-encodingchunked
x-origin-cacheHIT
last-modifiedFri, 10 Nov 2023 21:29:45 GMT
varyAccept-Encoding
access-control-allow-origin*
etagW/"654ea0c9-dce"
expiresTue, 24 Sep 2024 11:05:33 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-idCAC8:1699:563E93A:5E9641E:66F29AA5
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 3,828 referring domains.
This page has 733,665 backlinks.
This page has backlinks from 3,028 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Prototype77%Check
Prototype JavaScript72%Check
Prototype JavaScript framework70%Check
JavaScript66%Check
JavaScript framework65%Check
Web Applications54%Check
ambitious web54%Check
web53%Check
ambitious web applications53%Check
applications49%Check
Show more keywords and terms

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