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Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 88

    SEO

    Google-friendlier than
    66% of websites

rsb.org.uk

Royal Society of Biology

Page Load Speed

3.1 sec in total

First Response

171 ms

Resources Loaded

2.8 sec

Page Rendered

176 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 171 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

rsb.org.uk performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value6.6 s

38/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value8.3 s

40/100

10%

Network Requests Diagram

rsb.org.uk

171 ms

www.rsb.org.uk

713 ms

jcemediabox.css

82 ms

style.css

162 ms

template16.css

405 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 90% of them (53 requests) were addressed to the original Rsb.org.uk, 5% (3 requests) were made to Google-analytics.com and 2% (1 request) were made to Netdna.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (875 ms) relates to the external source S3-eu-west-1.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 400.3 kB (28%)

Content Size

1.4 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rsb.org.uk main page is 1.4 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 980.9 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 25.6 kB

  • Original 32.0 kB
  • After minification 29.5 kB
  • After compression 6.4 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 25.6 kB or 80% of the original size.

Image Optimization

-8%

Potential reduce by 76.7 kB

  • Original 980.9 kB
  • After minification 904.2 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. Rsb images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 126.4 kB

  • Original 202.8 kB
  • After minification 192.8 kB
  • After compression 76.5 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 126.4 kB or 62% of the original size.

CSS Optimization

-85%

Potential reduce by 171.6 kB

  • Original 202.1 kB
  • After minification 160.8 kB
  • After compression 30.5 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 171.6 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (53%)

Requests Now

57

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 57 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 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rsb.org.uk

rsb.org.uk

171 ms

www.rsb.org.uk

www.rsb.org.uk

713 ms

jcemediabox.css

jcemediabox.css

82 ms

style.css

style.css

162 ms

template16.css

template16.css

405 ms

template_extra.css

template_extra.css

244 ms

menu.css

menu.css

247 ms

page-top.css

page-top.css

251 ms

forms.css

forms.css

248 ms

default-menu.css

default-menu.css

249 ms

home-menu.css

home-menu.css

324 ms

scheme.css

scheme.css

327 ms

scheme-mysociety.css

scheme-mysociety.css

330 ms

scheme-article.css

scheme-article.css

329 ms

scheme-home.css

scheme-home.css

330 ms

oer.css

oer.css

412 ms

carousel.css

carousel.css

412 ms

jcemediabox.js

jcemediabox.js

573 ms

jquery.min.js

jquery.min.js

653 ms

jquery-noconflict.js

jquery-noconflict.js

414 ms

jquery-migrate.min.js

jquery-migrate.min.js

481 ms

bootstrap.min.js

bootstrap.min.js

562 ms

extrascript_v2.js

extrascript_v2.js

486 ms

bootstrap.min.js

bootstrap.min.js

26 ms

jquery.expander.js

jquery.expander.js

576 ms

tailscript.js

tailscript.js

559 ms

analytics.js

analytics.js

97 ms

grass.png

grass.png

875 ms

bg_globe_scope.png

bg_globe_scope.png

104 ms

bg_tree_dna_bird.png

bg_tree_dna_bird.png

106 ms

RSB-logo.png

RSB-logo.png

111 ms

searchButton.gif

searchButton.gif

112 ms

arrow.png

arrow.png

112 ms

glyphicons-halflings.png

glyphicons-halflings.png

111 ms

80864192imagesbannersSir_Alec_940_180.jpg

80864192imagesbannersSir_Alec_940_180.jpg

244 ms

2649558402imagesbannerssmells_to_signals_940_180.jpg

2649558402imagesbannerssmells_to_signals_940_180.jpg

405 ms

4039034272imagesbannersStarlingsurvey_940_180.jpg

4039034272imagesbannersStarlingsurvey_940_180.jpg

424 ms

3415585794imagesbannersJobsboard2016_940_180.jpg

3415585794imagesbannersJobsboard2016_940_180.jpg

342 ms

carousel-left-arrow.png

carousel-left-arrow.png

175 ms

carousel-right-arrow.png

carousel-right-arrow.png

177 ms

linkedin.png

linkedin.png

257 ms

facebook.png

facebook.png

257 ms

twitter.png

twitter.png

319 ms

wordpress.png

wordpress.png

336 ms

1101098102imagesbannersRSBregisters_160_600.png

1101098102imagesbannersRSBregisters_160_600.png

420 ms

lizard-mbr-txt.png

lizard-mbr-txt.png

401 ms

Blog.jpg

Blog.jpg

498 ms

Registers.jpg

Registers.jpg

422 ms

RSB_Biologist.jpg

RSB_Biologist.jpg

480 ms

RSB_Accreditation.jpg

RSB_Accreditation.jpg

481 ms

searchButton.gif

searchButton.gif

500 ms

mysociety.png

mysociety.png

501 ms

bg_beaker.png

bg_beaker.png

482 ms

bg_ant_cloud.png

bg_ant_cloud.png

541 ms

popup.html

popup.html

500 ms

tooltip.html

tooltip.html

514 ms

collect

collect

21 ms

collect

collect

69 ms

collect

collect

9 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: