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Search Engine Optimization Overview
63
100
Diigo - Better reading and research with annotation, highlighter, sticky notes, archiving, bookmarking & more.
Diigo is a powerful research tool and a knowledge-sharing community
https://www.diigo.com/
3 high issues
9.1%
7 medium issues
21.2%
3 low issues
9.1%
20 tests passed
60.6%
0.44 seconds
3.34 kB
9 resources
Secure
Seo
Title
The title tag must be between 1 and 60 characters.
The current title has 110 characters.
Meta description
The meta description tag is good.
Diigo is a powerful research tool and a knowledge-sharing community
Headings
There is no h1 tag on the webpage.
Content keywords
The content has relevant keywords.
diigoandresearchwithstickynotes
Image keywords
There are 5 images with missing alt attributes.
  1. https://www.diigo.com/images/v6/homepage/banner.gif
  2. https://www.diigo.com/images/v6/homepage/collect.gif
  3. https://www.diigo.com/images/v6/homepage/annotator.gif
  4. https://www.diigo.com/images/v6/homepage/organize.gif
  5. https://www.diigo.com/images/v6/homepage/share.gif
SEO friendly URL
The URL is SEO friendly.
https://www.diigo.com/
404 page
The website has 404 error pages.
https://www.diigo.com/404-99522a441c0a3e9d6f2c9e4fc3f35c10
Robots.txt
The webpage can be accessed by search engines.
Noindex
The webpage does not have a noindex tag set.
In-page links
The number of links on the webpage is okay.
Language
The webpage does not have a language declared.
Favicon
The webpage does not have a favicon.
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.44 seconds.
Page size
The size of the HTML webpage is 3,342.00.
HTTP requests
There are fewer than 9 HTTP requests on the webpage.
  1. https://www.diigo.com/javascripts/lib/jquery-1.8.0.min.js?1640672210
  2. https://www.diigo.com/javascripts/v6/homepage/homemain.js?1640672210
  1. https://www.diigo.com/stylesheets/../front-end-utils/basic.css?1640661557
  2. https://www.diigo.com/stylesheets/v6/homepage_v7.css?1640672210
  1. https://www.diigo.com/images/v6/homepage/banner.gif
  2. https://www.diigo.com/images/v6/homepage/collect.gif
  3. https://www.diigo.com/images/v6/homepage/annotator.gif
  4. https://www.diigo.com/images/v6/homepage/organize.gif
  5. https://www.diigo.com/images/v6/homepage/share.gif
Image format
There are 5 images that are not using the AVIF, WebP format.
  1. https://www.diigo.com/images/v6/homepage/banner.gif
  2. https://www.diigo.com/images/v6/homepage/collect.gif
  3. https://www.diigo.com/images/v6/homepage/annotator.gif
  4. https://www.diigo.com/images/v6/homepage/organize.gif
  5. https://www.diigo.com/images/v6/homepage/share.gif
JavaScript defer
The are 2 javascript resources without the defer attribute.
  1. https://www.diigo.com/javascripts/lib/jquery-1.8.0.min.js?1640672210
  2. https://www.diigo.com/javascripts/v6/homepage/homemain.js?1640672210
DOM size
The DOM size is optimal.
The HTML file has 171 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.diigo.com/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
nginx
Unsafe cross-origin links
The webpage has 6 unsafe cross-origin links.
Plaintext email
The webpage does not contain any plaintext emails.
Miscellaneous
Structured data
There are no structured data tags on the webpage.
Meta viewport
The webpage has a meta viewport tag set.
width=device-width, initial-scale=1, maximum-scale=1
Character set
The webpage does not have a charset declared.
Sitemap
No sitemaps found.
Social
The webpage has 2 social links.
Content length
The are less than 500 words on the webpage.
The webpage has 403 words.
Text to HTML ratio
The text to HTML ratio is 26%.
Inline CSS
The webpage does not contain inline CSS code.
Deprecated HTML
There are no deprecated HTML tags on the webpage.