Tools & Wizards About Us
warburg.sas.ac.uk screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

warburg.sas.ac.uk

The Warburg Institute

Page Load Speed

1.7 sec in total

First Response

113 ms

Resources Loaded

1.4 sec

Page Rendered

164 ms

warburg.sas.ac.uk screenshot

About Website

Click here to check amazing Warburg Sas content for United Kingdom. Otherwise, check out these important facts you probably never knew about warburg.sas.ac.uk

The Warburg Institute is one of the world’s leading centres for studying the interaction of ideas, images and society. It is dedicated to the survival and transmission of culture across time and space...

Visit warburg.sas.ac.uk

Key Findings

We analyzed Warburg.sas.ac.uk page load time and found that the first response time was 113 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

warburg.sas.ac.uk performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value6.4 s

41/100

10%

TBT (Total Blocking Time)

Value600 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.0 s

27/100

10%

Network Requests Diagram

113 ms

stylesheet.css

79 ms

stylesheet_0eef7db0c4.css

155 ms

javascript_ebd9c81938.js

157 ms

reset-min.css

80 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 89% of them (17 requests) were addressed to the original Warburg.sas.ac.uk, 11% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (287 ms) belongs to the original domain Warburg.sas.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 39.2 kB (31%)

Content Size

128.0 kB

After Optimization

88.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Warburg.sas.ac.uk main page is 128.0 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. 15% of websites need less resources to load. Images take 63.1 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 11.1 kB

  • Original 15.2 kB
  • After minification 12.4 kB
  • After compression 4.2 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. This page needs HTML code to be minified as it can gain 2.8 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 11.1 kB or 73% of the original size.

Image Optimization

-2%

Potential reduce by 1.1 kB

  • Original 63.1 kB
  • After minification 62.0 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. Warburg Sas images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 958 B

  • Original 18.5 kB
  • After minification 18.1 kB
  • After compression 17.6 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-84%

Potential reduce by 26.1 kB

  • Original 31.0 kB
  • After minification 21.3 kB
  • After compression 4.9 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. Warburg.sas.ac.uk needs all CSS files to be minified and compressed as it can save up to 26.1 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (17%)

Requests Now

18

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Warburg Sas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

113 ms

stylesheet.css

stylesheet.css

79 ms

stylesheet_0eef7db0c4.css

stylesheet_0eef7db0c4.css

155 ms

javascript_ebd9c81938.js

javascript_ebd9c81938.js

157 ms

reset-min.css

reset-min.css

80 ms

example.css

example.css

155 ms

ga.js

ga.js

30 ms

wblogo.png

wblogo.png

93 ms

navOverlay.png

navOverlay.png

108 ms

bg_searchInput.gif

bg_searchInput.gif

107 ms

bg_searchButton.gif

bg_searchButton.gif

108 ms

rosa.jpg

rosa.jpg

188 ms

5c1482553b.jpg

5c1482553b.jpg

165 ms

a9051a5d83.jpg

a9051a5d83.jpg

287 ms

e90cf6a41e.jpg

e90cf6a41e.jpg

228 ms

7d9d17d9c7.png

7d9d17d9c7.png

182 ms

27ea5bd8d9.png

27ea5bd8d9.png

183 ms

2d56e7a3c3.png

2d56e7a3c3.png

241 ms

__utm.gif

__utm.gif

15 ms

Accessibility Review

warburg.sas.ac.uk accessibility score

89

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

warburg.sas.ac.uk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

warburg.sas.ac.uk SEO score

91

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Warburg.sas.ac.uk 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 Warburg.sas.ac.uk 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

warburg.sas.ac.uk

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