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nrronline.org screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 74

    SEO

    Google-friendlier than
    31% of websites

nrronline.org

Wolters Kluwer Health

Page Load Speed

666 ms in total

First Response

39 ms

Resources Loaded

406 ms

Page Rendered

221 ms

nrronline.org screenshot

About Website

Click here to check amazing Nrronline content for United Kingdom. Otherwise, check out these important facts you probably never knew about nrronline.org

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Key Findings

We analyzed Nrronline.org page load time and found that the first response time was 39 ms and then it took 627 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster. This domain responded with an error, which can significantly jeopardize Nrronline.org rating and web reputation

Performance Metrics

nrronline.org performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value12.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.8 s

0/100

25%

SI (Speed Index)

Value12.4 s

3/100

10%

TBT (Total Blocking Time)

Value1,260 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value16.7 s

5/100

10%

Network Requests Diagram

default.aspx

39 ms

challenges.css

28 ms

favicon.ico

22 ms

v1

19 ms

transparent.gif

26 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that all of those requests were addressed to Nrronline.org and no external sources were called. The less responsive or slowest element that took the longest time to load (39 ms) relates to the external source Journals.lww.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.0 kB (38%)

Content Size

13.3 kB

After Optimization

8.3 kB

  • HTML
  • CSS

In fact, the total size of Nrronline.org main page is 13.3 kB. This result falls within a big category (top 100 000) of medium weight web pages. Only a small number of websites need less resources to load. HTML takes 10.7 kB which makes up the majority of the site volume.

HTML Optimization

-47%

Potential reduce by 5.0 kB

  • Original 10.7 kB
  • After minification 10.2 kB
  • After compression 5.7 kB

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 5.0 kB or 47% of the original size.

CSS Optimization

-1%

Potential reduce by 19 B

  • Original 2.6 kB
  • After minification 2.6 kB
  • After compression 2.6 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nrronline.org has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • JavaScript
  • CSS

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

Network Requests Diagram

default.aspx

default.aspx

39 ms

challenges.css

challenges.css

28 ms

favicon.ico

favicon.ico

22 ms

v1

v1

19 ms

transparent.gif

transparent.gif

26 ms

transparent.gif

transparent.gif

25 ms

Accessibility Review

nrronline.org accessibility score

67

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

nrronline.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

nrronline.org SEO score

74

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nrronline.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Nrronline.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

nrronline.org

Open Graph description is not detected on the main page of Nrronline. 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: