Tools & Wizards About Us
bdschapters.com screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

bdschapters.com

BDS Chapters Online | Chapters and collections for the global scientific community

Page Load Speed

2.2 sec in total

First Response

193 ms

Resources Loaded

1.6 sec

Page Rendered

362 ms

bdschapters.com screenshot

About Website

Visit bdschapters.com now to see the best up-to-date BDS Chapters content and also check out these interesting facts you probably never knew about bdschapters.com

Burleigh Dodds Science Publishing Limited are proud to be able to offer anything from individual chapters through to curated collections of scientific publications which can to purchased and viewed on...

Visit bdschapters.com

Key Findings

We analyzed Bdschapters.com page load time and found that the first response time was 193 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

bdschapters.com performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value900 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

bdschapters.com

193 ms

www.bdschapters.com

199 ms

screen.991.css

266 ms

responsive-commerce.js

183 ms

shop-description.js

177 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 81% of them (17 requests) were addressed to the original Bdschapters.com, 19% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (889 ms) belongs to the original domain Bdschapters.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 81.6 kB (5%)

Content Size

1.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bdschapters.com main page is 1.6 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 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 75.0 kB

  • Original 86.4 kB
  • After minification 57.5 kB
  • After compression 11.4 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. This page needs HTML code to be minified as it can gain 28.9 kB, which is 33% 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 75.0 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 1.4 kB

  • Original 1.4 MB
  • After minification 1.4 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. BDS Chapters images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 154 B

  • Original 6.0 kB
  • After minification 6.0 kB
  • After compression 5.9 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

-19%

Potential reduce by 5.1 kB

  • Original 26.8 kB
  • After minification 26.8 kB
  • After compression 21.6 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. Bdschapters.com needs all CSS files to be minified and compressed as it can save up to 5.1 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (26%)

Requests Now

19

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BDS Chapters. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

bdschapters.com

bdschapters.com

193 ms

www.bdschapters.com

www.bdschapters.com

199 ms

screen.991.css

screen.991.css

266 ms

responsive-commerce.js

responsive-commerce.js

183 ms

shop-description.js

shop-description.js

177 ms

js

js

62 ms

1151.png

1151.png

181 ms

327.png

327.png

180 ms

326.png

326.png

179 ms

search.svg

search.svg

259 ms

shop-icon-account.png

shop-icon-account.png

257 ms

shop-icon-basket.png

shop-icon-basket.png

259 ms

330.png

330.png

340 ms

329.png

329.png

399 ms

1164.jpg

1164.jpg

754 ms

1165.jpg

1165.jpg

755 ms

1166.jpg

1166.jpg

889 ms

1154.jpg

1154.jpg

858 ms

js

js

47 ms

js

js

64 ms

js

js

64 ms

Accessibility Review

bdschapters.com accessibility score

90

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.

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

bdschapters.com 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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

bdschapters.com SEO score

93

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

    EN

  • Encoding

    ISO-8859-1

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

bdschapters.com

Open Graph data is detected on the main page of BDS Chapters. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: