Tools & Wizards About Us
vega.org.uk screenshot

Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

vega.org.uk

The Vega Science Trust - Science Video - Homepage

Page Load Speed

1.3 sec in total

First Response

287 ms

Resources Loaded

889 ms

Page Rendered

93 ms

vega.org.uk screenshot

About Website

Visit vega.org.uk now to see the best up-to-date Vega content for United States and also check out these interesting facts you probably never knew about vega.org.uk

The Vega Science Trust`s extensive collection of science videos include lectures, discussions, interviews, Nobel Prize interviews, careers profiles, educational resources, and research news.

Visit vega.org.uk

Key Findings

We analyzed Vega.org.uk page load time and found that the first response time was 287 ms and then it took 982 ms 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

vega.org.uk performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

95/100

25%

SI (Speed Index)

Value1.7 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)

Value1.7 s

100/100

10%

Network Requests Diagram

vega.org.uk

287 ms

awstats_misc_tracker.js

165 ms

vegaPage.css

164 ms

menuBar.js

163 ms

video-js.css

244 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that all of those requests were addressed to Vega.org.uk and no external sources were called. The less responsive or slowest element that took the longest time to load (424 ms) belongs to the original domain Vega.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.0 kB (23%)

Content Size

473.0 kB

After Optimization

365.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vega.org.uk main page is 473.0 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. 25% of websites need less resources to load. Images take 333.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 18.4 kB

  • Original 22.5 kB
  • After minification 21.0 kB
  • After compression 4.1 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 18.4 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 1.6 kB

  • Original 333.4 kB
  • After minification 331.7 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. Vega images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 60.3 kB

  • Original 84.6 kB
  • After minification 76.8 kB
  • After compression 24.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 60.3 kB or 71% of the original size.

CSS Optimization

-85%

Potential reduce by 27.6 kB

  • Original 32.6 kB
  • After minification 20.5 kB
  • After compression 5.0 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. Vega.org.uk needs all CSS files to be minified and compressed as it can save up to 27.6 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (13%)

Requests Now

31

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vega. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

vega.org.uk

vega.org.uk

287 ms

awstats_misc_tracker.js

awstats_misc_tracker.js

165 ms

vegaPage.css

vegaPage.css

164 ms

menuBar.js

menuBar.js

163 ms

video-js.css

video-js.css

244 ms

video.js

video.js

331 ms

wz_tooltip.js

wz_tooltip.js

176 ms

awstats_misc_tracker.js

awstats_misc_tracker.js

88 ms

80.logo.gif

80.logo.gif

88 ms

80.FSU-seal2.jpg

80.FSU-seal2.jpg

87 ms

Feynman.jpg

Feynman.jpg

160 ms

Careers.jpg

Careers.jpg

246 ms

Research.jpg

Research.jpg

248 ms

NobelScientists.jpg

NobelScientists.jpg

175 ms

Discussions.jpg

Discussions.jpg

176 ms

Lectures.jpg

Lectures.jpg

244 ms

Schools.jpg

Schools.jpg

246 ms

Interviews.jpg

Interviews.jpg

254 ms

Issues.jpg

Issues.jpg

256 ms

Reflections.jpg

Reflections.jpg

327 ms

Antartic.jpg

Antartic.jpg

328 ms

Masterclassicon.jpg

Masterclassicon.jpg

332 ms

womeninscience.jpg

womeninscience.jpg

331 ms

Documentary.jpg

Documentary.jpg

337 ms

200.logo.gif

200.logo.gif

341 ms

fsu_logo.jpg

fsu_logo.jpg

409 ms

uslogo.jpg

uslogo.jpg

410 ms

leverhulme_logo.jpg

leverhulme_logo.jpg

412 ms

hefce.jpg

hefce.jpg

415 ms

sponsor_badge.jpg

sponsor_badge.jpg

420 ms

kohnlogo_80x40.jpg

kohnlogo_80x40.jpg

424 ms

print.css

print.css

84 ms

Accessibility Review

vega.org.uk accessibility score

73

Accessibility Issues

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

Best Practices

vega.org.uk 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

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

vega.org.uk SEO score

69

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

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 Vega.org.uk 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 Vega.org.uk 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

vega.org.uk

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