Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 88

    SEO

    Google-friendlier than
    66% of websites

leydesdorff.net

Loet Leydesdorff: scientometrics, knowledge-based economy, innovation, sociology of communication, triple helix

Page Load Speed

1.6 sec in total

First Response

311 ms

Resources Loaded

975 ms

Page Rendered

303 ms

leydesdorff.net screenshot

About Website

Visit leydesdorff.net now to see the best up-to-date Leydesdorff content for United States and also check out these interesting facts you probably never knew about leydesdorff.net

Loet Leydesdorff: scientometrics, knowledge-based economy, information theory, self-organization, autopoiesis, innovation, triple helix

Visit leydesdorff.net

Key Findings

We analyzed Leydesdorff.net page load time and found that the first response time was 311 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

leydesdorff.net performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

95/100

25%

SI (Speed Index)

Value2.0 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

leydesdorff.net

311 ms

ma.jpg

443 ms

typing.gif

171 ms

thumb2a.gif

173 ms

hungary.jpg

177 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that all of those requests were addressed to Leydesdorff.net and no external sources were called. The less responsive or slowest element that took the longest time to load (662 ms) belongs to the original domain Leydesdorff.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 22.1 kB (5%)

Content Size

426.5 kB

After Optimization

404.4 kB

In fact, the total size of Leydesdorff.net main page is 426.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Images take 401.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 20.2 kB

  • Original 25.3 kB
  • After minification 24.1 kB
  • After compression 5.1 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 20.2 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 1.9 kB

  • Original 401.2 kB
  • After minification 399.3 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. Leydesdorff images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leydesdorff. According to our analytics all requests are already optimized.

Accessibility Review

leydesdorff.net accessibility score

63

Accessibility Issues

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.

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

leydesdorff.net best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

leydesdorff.net SEO score

88

Search Engine Optimization Advices

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leydesdorff.net 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 Leydesdorff.net 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 Leydesdorff. 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: