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Search Engine Optimization Overview
74
100
OSF
https://osf.io/
3 high issues
9.1%
3 medium issues
9.1%
6 low issues
18.2%
21 tests passed
63.6%
0.38 seconds
5.92 kB
8 resources
Secure
Seo
Title
The title tag is perfect.
OSF
Meta description
The meta description tag is missing or empty.
Headings
There is no h1 tag on the webpage.
Content keywords
No relevant keywords found on the webpage.
osf
Image keywords
All images have alt attributes set.
SEO friendly URL
The URL is SEO friendly.
https://osf.io/
404 page
The website has 404 error pages.
https://osf.io/404-4276181c426ffb91c7a997b418ba52f1
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 has the language declared.
en
Favicon
The webpage does not have a favicon.
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.38 seconds.
Page size
The size of the HTML webpage is 5,920.00.
HTTP requests
There are fewer than 8 HTTP requests on the webpage.
  1. https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML
  2. https://osf.io/ember_osf_web/assets/vendor-2da822ea19ba933a0f367bd727735780.js
  3. https://osf.io/ember_osf_web/assets/ember-osf-web-a7dd1662981526c91f8837506ab8447c.js
  4. https://cdn.ravenjs.com/3.22.1/ember/raven.min.js
  5. https://cdnjs.cloudflare.com/ajax/libs/zxcvbn/4.4.2/zxcvbn.js
  1. https://fonts.googleapis.com/css?family=Open+Sans:400,600,300,700
  2. https://osf.io/ember_osf_web/assets/vendor-cefb2e8a06c8a834a26e3b0be6738cf4.css
  3. https://osf.io/ember_osf_web/assets/ember-osf-web-1177ee391968a8491c31164eb746094b.css
Image format
The images are served in the AVIF, WebP format.
JavaScript defer
The are 5 javascript resources without the defer attribute.
  1. https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML
  2. https://osf.io/ember_osf_web/assets/vendor-2da822ea19ba933a0f367bd727735780.js
  3. https://osf.io/ember_osf_web/assets/ember-osf-web-a7dd1662981526c91f8837506ab8447c.js
  4. https://cdn.ravenjs.com/3.22.1/ember/raven.min.js
  5. https://cdnjs.cloudflare.com/ajax/libs/zxcvbn/4.4.2/zxcvbn.js
DOM size
The DOM size is optimal.
The HTML file has 29 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://osf.io/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage does not have a public server signature.
Unsafe cross-origin links
The webpage has 1 unsafe cross-origin links.
Plaintext email
The webpage contains plaintext emails.
  1. 90af8984628e42799a5ec453ef6d6fc4@sentry2-client.cos.io
  2. 22support@osf.io
  3. 22contact@osf.io
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
Character set
The webpage has a charset value set.
utf-8
Sitemap
No sitemaps found.
Social
The webpage does not contain any social links.
Content length
The are less than 500 words on the webpage.
The webpage has 51 words.
Text to HTML ratio
The text to HTML ratio is under 10%
The text to HTML ratio is 2%.
Inline CSS
The webpage does not contain inline CSS code.
Deprecated HTML
There are no deprecated HTML tags on the webpage.