Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

thersa.org

The RSA - RSA

Page Load Speed

4.4 sec in total

First Response

268 ms

Resources Loaded

3.5 sec

Page Rendered

568 ms

thersa.org screenshot

About Website

Visit thersa.org now to see the best up-to-date The RSA content for United Kingdom and also check out these interesting facts you probably never knew about thersa.org

We unite people and ideas. Join us to resolve the challenges of our time.

Visit thersa.org

Key Findings

We analyzed Thersa.org page load time and found that the first response time was 268 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

thersa.org performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value9.6 s

0/100

25%

SI (Speed Index)

Value4.4 s

75/100

10%

TBT (Total Blocking Time)

Value280 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.48

18/100

15%

TTI (Time to Interactive)

Value7.6 s

46/100

10%

Network Requests Diagram

thersa.org

268 ms

www.thersa.org

1050 ms

styles.css

296 ms

jquery-ui.min.css

349 ms

modernizr-2.7.1.min.js

353 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 51% of them (39 requests) were addressed to the original Thersa.org, 9% (7 requests) were made to Platform.twitter.com and 5% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Thersa.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 800.0 kB (29%)

Content Size

2.7 MB

After Optimization

1.9 MB

In fact, the total size of Thersa.org main page is 2.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 39.5 kB

  • Original 50.5 kB
  • After minification 42.0 kB
  • After compression 10.9 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 8.5 kB, which is 17% 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 39.5 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 27.8 kB

  • Original 1.7 MB
  • After minification 1.6 MB

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. The RSA images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 238.3 kB

  • Original 435.2 kB
  • After minification 430.5 kB
  • After compression 197.0 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 238.3 kB or 55% of the original size.

CSS Optimization

-86%

Potential reduce by 494.3 kB

  • Original 576.2 kB
  • After minification 573.8 kB
  • After compression 81.8 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. Thersa.org needs all CSS files to be minified and compressed as it can save up to 494.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (40%)

Requests Now

70

After Optimization

42

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The RSA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

thersa.org accessibility score

91

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

thersa.org 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

thersa.org SEO score

86

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

Links do not have descriptive text

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thersa.org 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 Thersa.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

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