Tools & Wizards About Us
biotopics.co.uk screenshot

Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 95

    SEO

    Google-friendlier than
    91% of websites

biotopics.co.uk

BioTopics Website - Main Index Front Page

Page Load Speed

1.5 sec in total

First Response

299 ms

Resources Loaded

1.1 sec

Page Rendered

127 ms

biotopics.co.uk screenshot

About Website

Welcome to biotopics.co.uk homepage info - get ready to check Bio Topics best content for United States right away, or after learning these important things about biotopics.co.uk

An interactive web-based Biology resource including teaching/learning notes for GCSE and AS/A level Biology (Key Stage 3 4 + 5 of the UK National Curriculum) as well as interactive 3-D biological mole...

Visit biotopics.co.uk

Key Findings

We analyzed Biotopics.co.uk page load time and found that the first response time was 299 ms and then it took 1.2 sec 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

biotopics.co.uk performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

74/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.215

58/100

15%

TTI (Time to Interactive)

Value5.4 s

72/100

10%

Network Requests Diagram

biotopics.co.uk

299 ms

menuh.css

94 ms

q

268 ms

q

12 ms

cse.js

14 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 24% of them (9 requests) were addressed to the original Biotopics.co.uk, 24% (9 requests) were made to Google.com and 11% (4 requests) were made to Rcm-images.amazon.com. The less responsive or slowest element that took the longest time to load (299 ms) belongs to the original domain Biotopics.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 49.3 kB (31%)

Content Size

161.4 kB

After Optimization

112.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biotopics.co.uk main page is 161.4 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. 15% of websites need less resources to load. Javascripts take 51.4 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 32.8 kB

  • Original 47.2 kB
  • After minification 43.3 kB
  • After compression 14.5 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 32.8 kB or 69% of the original size.

Image Optimization

-3%

Potential reduce by 1.3 kB

  • Original 44.5 kB
  • After minification 43.2 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. Bio Topics images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 144 B

  • Original 51.4 kB
  • After minification 51.4 kB
  • After compression 51.2 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

-83%

Potential reduce by 15.1 kB

  • Original 18.3 kB
  • After minification 14.2 kB
  • After compression 3.1 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. Biotopics.co.uk needs all CSS files to be minified and compressed as it can save up to 15.1 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (37%)

Requests Now

35

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bio Topics. 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

biotopics.co.uk

biotopics.co.uk

299 ms

menuh.css

menuh.css

94 ms

q

q

268 ms

q

q

12 ms

cse.js

cse.js

14 ms

award.gif

award.gif

253 ms

BioTopicsover2010.gif

BioTopicsover2010.gif

95 ms

navdown_blue.gif

navdown_blue.gif

201 ms

topics.gif

topics.gif

204 ms

rwolf.gif

rwolf.gif

204 ms

SZ5star.gif

SZ5star.gif

203 ms

rated.gif

rated.gif

203 ms

BioTopics2010blue.gif

BioTopics2010blue.gif

203 ms

cse.js

cse.js

72 ms

jsapi

jsapi

33 ms

default+en.css

default+en.css

6 ms

default+en.I.js

default+en.I.js

20 ms

default.css

default.css

32 ms

json

json

255 ms

searchbox_20.html

searchbox_20.html

185 ms

json

json

12 ms

searchbox_20.html

searchbox_20.html

17 ms

cm

cm

173 ms

ap-search-go-btn.gif

ap-search-go-btn.gif

73 ms

ir

ir

7 ms

searchbox-logo-126x32.gif

searchbox-logo-126x32.gif

74 ms

ap-search-go-btn.gif

ap-search-go-btn.gif

20 ms

ir

ir

249 ms

searchbox-logo-126x32.gif

searchbox-logo-126x32.gif

21 ms

UK_X-Site_MothersDay-Associates_250x250.jpg

UK_X-Site_MothersDay-Associates_250x250.jpg

12 ms

138 ms

async-ads.js

async-ads.js

53 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

32 ms

small-logo.png

small-logo.png

13 ms

search_box_icon.png

search_box_icon.png

16 ms

clear.png

clear.png

12 ms

nav_logo114.png

nav_logo114.png

6 ms

Accessibility Review

biotopics.co.uk accessibility score

89

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.

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

biotopics.co.uk best practices score

67

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

biotopics.co.uk SEO score

95

Search Engine Optimization Advices

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 Biotopics.co.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 Biotopics.co.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

biotopics.co.uk

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