Report Summary

  • 0

    Performance

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

koos.nu

Knee injury and Osteoarthritis Outcome Score, Ewa Roos

Page Load Speed

1.6 sec in total

First Response

408 ms

Resources Loaded

781 ms

Page Rendered

385 ms

koos.nu screenshot

About Website

Click here to check amazing Koos content. Otherwise, check out these important facts you probably never knew about koos.nu

Ý KOOS is developed as an instrument to assess the patients opinion about their knee and associated problems. FAOS was developed to assess the patients opinion about a variety of foot and ankle-relate...

Visit koos.nu

Key Findings

We analyzed Koos.nu page load time and found that the first response time was 408 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

koos.nu performance score

0

Network Requests Diagram

koos.nu

408 ms

register.shtml

98 ms

main.html

188 ms

uppe.jpg

185 ms

nere.jpg

107 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Koos.nu and no external sources were called. The less responsive or slowest element that took the longest time to load (408 ms) belongs to the original domain Koos.nu.

Page Optimization Overview & Recommendations

Page size can be reduced by 646 B (2%)

Content Size

38.7 kB

After Optimization

38.0 kB

In fact, the total size of Koos.nu main page is 38.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 37.8 kB which makes up the majority of the site volume.

HTML Optimization

-48%

Potential reduce by 431 B

  • Original 896 B
  • After minification 887 B
  • After compression 465 B

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 431 B or 48% of the original size.

Image Optimization

-1%

Potential reduce by 215 B

  • Original 37.8 kB
  • After minification 37.6 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Koos images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Koos. According to our analytics all requests are already optimized.

Accessibility Review

koos.nu accessibility score

33

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

koos.nu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

koos.nu SEO score

73

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Koos.nu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Koos.nu main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Koos. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: