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Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

rsb.org.uk

Royal Society of Biology

Page Load Speed

2.1 sec in total

First Response

148 ms

Resources Loaded

1.8 sec

Page Rendered

166 ms

rsb.org.uk screenshot

About Website

Welcome to rsb.org.uk homepage info - get ready to check Rsb best content for India right away, or after learning these important things about rsb.org.uk

The leading professional body representing many of the learned societies and other organisations making up the diverse landscape of the biological sciences, as well as thousands of individuals

Visit rsb.org.uk

Key Findings

We analyzed Rsb.org.uk page load time and found that the first response time was 148 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

rsb.org.uk performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value13.8 s

0/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

rsb.org.uk

148 ms

www.rsb.org.uk

525 ms

jcemediabox.css

133 ms

style.css

201 ms

style.css

341 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 93% of them (43 requests) were addressed to the original Rsb.org.uk, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (552 ms) belongs to the original domain Rsb.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 637.6 kB (21%)

Content Size

3.1 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rsb.org.uk main page is 3.1 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. 35% of websites need less resources to load. Images take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 26.5 kB

  • Original 34.6 kB
  • After minification 30.9 kB
  • After compression 8.0 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 3.7 kB, which is 11% 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 26.5 kB or 77% of the original size.

Image Optimization

-14%

Potential reduce by 370.5 kB

  • Original 2.7 MB
  • After minification 2.3 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. Obviously, Rsb needs image optimization as it can save up to 370.5 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 168.3 kB

  • Original 265.1 kB
  • After minification 264.9 kB
  • After compression 96.8 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 168.3 kB or 63% of the original size.

CSS Optimization

-86%

Potential reduce by 72.2 kB

  • Original 84.1 kB
  • After minification 70.0 kB
  • After compression 11.8 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. Rsb.org.uk needs all CSS files to be minified and compressed as it can save up to 72.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (30%)

Requests Now

44

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rsb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rsb.org.uk

rsb.org.uk

148 ms

www.rsb.org.uk

www.rsb.org.uk

525 ms

jcemediabox.css

jcemediabox.css

133 ms

style.css

style.css

201 ms

style.css

style.css

341 ms

chosen.css

chosen.css

205 ms

finder.css

finder.css

206 ms

jcemediabox.js

jcemediabox.js

351 ms

jquery.min.js

jquery.min.js

392 ms

jquery-noconflict.js

jquery-noconflict.js

268 ms

jquery-migrate.min.js

jquery-migrate.min.js

272 ms

chosen.jquery.min.js

chosen.jquery.min.js

341 ms

bootstrap.min.js

bootstrap.min.js

335 ms

jquery.autocomplete.min.js

jquery.autocomplete.min.js

345 ms

carousel.js

carousel.js

408 ms

analytics.js

analytics.js

42 ms

popup.html

popup.html

74 ms

tooltip.html

tooltip.html

75 ms

RSB-logo.png

RSB-logo.png

74 ms

searchButton.gif

searchButton.gif

73 ms

grass.png

grass.png

209 ms

bg_globe_scope.png

bg_globe_scope.png

75 ms

bg_tree_dna_bird.png

bg_tree_dna_bird.png

139 ms

arrow.png

arrow.png

140 ms

313652291imagesBiology_Week_2024BW_carousel_1880_360.jpg

313652291imagesBiology_Week_2024BW_carousel_1880_360.jpg

353 ms

3130028464images1_website_banners2020Policy_resource_library_web_banner_1880_360.png

3130028464images1_website_banners2020Policy_resource_library_web_banner_1880_360.png

417 ms

1753291074imagesbannersAmbassador_Banner_1880_360.jpg

1753291074imagesbannersAmbassador_Banner_1880_360.jpg

422 ms

4284955900imagesbannersJBE2015_1880_360.jpg

4284955900imagesbannersJBE2015_1880_360.jpg

412 ms

carousel-left-arrow.png

carousel-left-arrow.png

209 ms

carousel-right-arrow.png

carousel-right-arrow.png

276 ms

lizard-mbr-txt.png

lizard-mbr-txt.png

279 ms

COVID_module_new.png

COVID_module_new.png

353 ms

Biology_Week_Home_Page_Module_2024-new.jpg

Biology_Week_Home_Page_Module_2024-new.jpg

351 ms

RSB_Biologist.jpg

RSB_Biologist.jpg

422 ms

RSB_Accreditation.jpg

RSB_Accreditation.jpg

422 ms

searchButton.gif

searchButton.gif

420 ms

mysociety.png

mysociety.png

479 ms

580b57fcd9996e24bc43c53e.png

580b57fcd9996e24bc43c53e.png

485 ms

LinkedIn-Logo-500x500.png

LinkedIn-Logo-500x500.png

489 ms

Facebook_logo_square.png

Facebook_logo_square.png

490 ms

Instagram_icon.png

Instagram_icon.png

489 ms

4170315165imagesbannersMN01269_BiologistSkyscraper_ad160x600pxV1_160_600.gif

4170315165imagesbannersMN01269_BiologistSkyscraper_ad160x600pxV1_160_600.gif

491 ms

bg_beaker.png

bg_beaker.png

546 ms

bg_ant_cloud.png

bg_ant_cloud.png

552 ms

collect

collect

12 ms

js

js

71 ms

Accessibility Review

rsb.org.uk accessibility score

79

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

High

Some elements have a [tabindex] value greater than 0

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Best Practices

rsb.org.uk best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rsb.org.uk SEO score

88

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

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

    UTF-8

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

rsb.org.uk

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