Tools & Wizards About Us
scienceclinic.co.uk screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

scienceclinic.co.uk

Science Clinic Project

Page Load Speed

8.4 sec in total

First Response

290 ms

Resources Loaded

6.9 sec

Page Rendered

1.2 sec

scienceclinic.co.uk screenshot

About Website

Visit scienceclinic.co.uk now to see the best up-to-date Science Clinic content and also check out these interesting facts you probably never knew about scienceclinic.co.uk

Visit scienceclinic.co.uk

Key Findings

We analyzed Scienceclinic.co.uk page load time and found that the first response time was 290 ms and then it took 8.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

scienceclinic.co.uk performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value30.6 s

0/100

25%

SI (Speed Index)

Value19.7 s

0/100

10%

TBT (Total Blocking Time)

Value450 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.841

4/100

15%

TTI (Time to Interactive)

Value29.3 s

0/100

10%

Network Requests Diagram

scienceclinic.co.uk

290 ms

scienceclinic.co.uk

985 ms

css

38 ms

color-switcher.css

133 ms

font-awesome.min.css

319 ms

Our browser made a total of 162 requests to load all elements on the main page. We found that 94% of them (152 requests) were addressed to the original Scienceclinic.co.uk, 4% (6 requests) were made to Fonts.gstatic.com and 1% (2 requests) were made to Bark.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Scienceclinic.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 4.9 MB (18%)

Content Size

27.5 MB

After Optimization

22.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Scienceclinic.co.uk main page is 27.5 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. Only a small number of websites need less resources to load. Images take 26.0 MB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 185.4 kB

  • Original 200.3 kB
  • After minification 108.2 kB
  • After compression 14.9 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 92.1 kB, which is 46% 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 185.4 kB or 93% of the original size.

Image Optimization

-14%

Potential reduce by 3.7 MB

  • Original 26.0 MB
  • After minification 22.4 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. Obviously, Science Clinic needs image optimization as it can save up to 3.7 MB 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

-73%

Potential reduce by 439.3 kB

  • Original 598.3 kB
  • After minification 549.2 kB
  • After compression 159.0 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 439.3 kB or 73% of the original size.

CSS Optimization

-88%

Potential reduce by 598.2 kB

  • Original 682.7 kB
  • After minification 485.4 kB
  • After compression 84.5 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. Scienceclinic.co.uk needs all CSS files to be minified and compressed as it can save up to 598.2 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 46 (31%)

Requests Now

149

After Optimization

103

  • Images
  • JavaScript
  • CSS

The browser has sent 149 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Clinic. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 33 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

scienceclinic.co.uk

scienceclinic.co.uk

290 ms

scienceclinic.co.uk

scienceclinic.co.uk

985 ms

css

css

38 ms

color-switcher.css

color-switcher.css

133 ms

font-awesome.min.css

font-awesome.min.css

319 ms

material-design-iconic-font.min.css

material-design-iconic-font.min.css

624 ms

bootstrap.min.css

bootstrap.min.css

781 ms

bootstrap-select.min.css

bootstrap-select.min.css

349 ms

plugins.css

plugins.css

758 ms

main.css

main.css

822 ms

color.css

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440 ms

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477 ms

responsive.css

responsive.css

627 ms

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651 ms

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1305 ms

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1425 ms

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2386 ms

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2448 ms

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1401 ms

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popper.min.js

1397 ms

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1418 ms

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1430 ms

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1533 ms

styleswitch.js

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1513 ms

owl.carousel.js

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1538 ms

main.js

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1522 ms

widgets.js

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1524 ms

bootstrap-select.min.js

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1756 ms

modernizr-2.8.3.min.js

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1778 ms

jquery-confirm.min.js

jquery-confirm.min.js

1910 ms

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1910 ms

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1913 ms

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1238 ms

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1138 ms

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16 ms

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127 ms

Accessibility Review

scienceclinic.co.uk accessibility score

73

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

scienceclinic.co.uk best practices score

58

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

scienceclinic.co.uk SEO score

77

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Scienceclinic.co.uk 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 Scienceclinic.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

scienceclinic.co.uk

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