Diigo.com - SEO Checker

Overview of the SEO Check
Meta information
72% 
Page quality
34% 
Page structure
58% 
Link structure
88% 
Server
86% 
External factors
100% 
SEO Score
Response time
1.09 s
File size
11.70 kB
Words
215
Media files
5
Number of links
14 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Diigo - Better reading and research with annotation, highlighter, sticky notes, archiving, bookmarking & more.
The page title should be shorter than 580 pixels. It is 972 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Diigo is a powerful research tool and a knowledge-sharing community
The length of the meta description is perfect. (427 pixels out of 1000 max pixel length)
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 XHTML 1.0 Transitional 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
descriptionDiigo is a powerful research tool and a knowledge-sharing community
keywordsEmpty
viewportwidth=device-width, initial-scale=1, maximum-scale=1
Content-Typetext/html; charset=UTF-8
X-XRDS-Locationhttps://www.diigo.com/openid?do=xrds

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Page quality

Content
(Critically important)
There are only 215 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
28.4% of the text are stop words.
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 21 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1, maximum-scale=1" is provided.
This page only loads 2 JavaScript files. That's good!
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)
5 images have no alt attribute. The content of alt attributes is used by search engines.
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)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/images/v6/homepage/banner.gifNo alt attribute provided
/images/v6/homepage/collect.gifNo alt attribute provided
/images/v6/homepage/annotator.gifNo alt attribute provided
/images/v6/homepage/organize.gifNo alt attribute provided
/images/v6/homepage/share.gifNo alt attribute provided

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
There are no headings specified on the page. Headings are important for search engine optimization and help to structure your content.

Heading structure

No headings were found.
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 6 external links on this page.
LinkAttributesAnchor text
https://www.diigo.com/Subdomain A-TITLE Diigo Home
https://www.diigo.com/toolsSubdomain Downloads
http://blog.diigo.com/External Subdomain Blog
/sign-in?referInfo=https://www...Subdomain Sign in
https://www.diigo.com/sign-upSubdomain Sign up
https://www.diigo.com/toolsSubdomain Text duplicate Downloads
http://blog.diigo.com/External Subdomain Text duplicate Blog
/sign-in?referInfo=https://www...Subdomain Text duplicate Sign in
https://www.diigo.com/sign-upSubdomain Text duplicate Sign up
https://www.diigo.com/sign-upGET STARTED
https://www.diigo.com/sign-upText duplicate GET STARTED
https://www.facebook.com/diigo...New window External Subdomain No Text
https://twitter.com/diigoNew window External No Text
http://diigoblr.tumblr.com/New window External Subdomain No Text
http://blog.diigo.com/New window External Subdomain No Text
https://www.diigo.com/aboutSubdomain About
https://www.diigo.com/premiumSubdomain Pricing & Plans
https://www.diigo.com/termsSubdomain Terms of Service
https://www.diigo.com/privacySubdomain Privacy Policy
/common/contactSubdomain Contact Us

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.diigo.com/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is slow (1.09 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page only loads 2 CSS files. That's ok.
This page only loads 2 JavaScript files. That's good!
The file size of the HTML document is fine (12 kB).

HTTP Response Header

NameValue
servernginx
dateMon, 21 Apr 2025 19:32:56 GMT
content-typetext/html; charset=UTF-8
transfer-encodingchunked
connectionkeep-alive
status200 OK
set-cookie95 Characters
x-runtime0.00314
p3pCP="NOI DEVa TAIa OUR BUS UNI"
cache-controlprivate, max-age=0, must-revalidate
etagW/"8633d325ee396b876f1115e2fd2e5c80"
content-encodinggzip
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 2,059 referring domains.
This page has 29,467 backlinks.
This page has backlinks from 1,722 different ip addresses.

Robots.txt

# See http://www.robotstxt.org/wc/norobots.html for documentation on how to use the robots.txt file

User-agent: Mediapartners-Google*
Disallow:

User-agent: *
Disallow: /redirect
Disallow: /invitation
Disallow: /sign-in
Disallow: /sign-out
Disallow: /search
Disallow: /blog_this
Disallow: /import_all
Disallow: /roll
Disallow: /post
Disallow: /customize_search
Disallow: /people/like
Disallow: /people/search
Disallow: /buzz/justin
Disallow: /user_mana2
Disallow: /bookmark_mana2
Disallow: /tag_mana2
Disallow: /facebook
Disallow: /openid
Disallow: /toolbar
Disallow: /chappai
Disallow: /rss
Disallow: /cached
Disallow: /annotated
Disallow: /proxy
#Disallow: /user
Disallow: /user/*/
Disallow: /community
Disallow: /cloud/
Disallow: /*?
Disallow: /tag/*+

Search preview

www.diigo.com
Diigo - Better reading and research with annotation, highlighter, s...
Diigo is a powerful research tool and a knowledge-sharing community

Most important keywords

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

KeywordResultRecheck
Diigo69%Check
research58%Check
Sticky Notes46%Check
knowledge46%Check
sharing46%Check
Highlight45%Check
Share36%Check
Collect36%Check
Organize36%Check
page36%Check

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