Tools & Wizards About Us

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

platelets.blood.co.uk

Platelets - Give platelets - NHS Blood and Transplant

Page Load Speed

4.4 sec in total

First Response

1 sec

Resources Loaded

2.9 sec

Page Rendered

397 ms

About Website

Welcome to platelets.blood.co.uk homepage info - get ready to check Platelets Blood best content for United Kingdom right away, or after learning these important things about platelets.blood.co.uk

Giving platelets takes just 2 hours but could make a huge difference to someone's life. Find out more about platelet donation.

Visit platelets.blood.co.uk

Key Findings

We analyzed Platelets.blood.co.uk page load time and found that the first response time was 1 sec and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

platelets.blood.co.uk performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value1,920 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value11.5 s

18/100

10%

Network Requests Diagram

platelets.blood.co.uk

1020 ms

gtm.js

88 ms

styles.css

34 ms

jquery-1.11.3.min.js

1047 ms

jquery.validate.min.js

1133 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 31% of them (10 requests) were addressed to the original Platelets.blood.co.uk, 47% (15 requests) were made to Nhsbtdbe.blob.core.windows.net and 16% (5 requests) were made to Az766967.vo.msecnd.net. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Platelets.blood.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 42.1 kB (6%)

Content Size

652.2 kB

After Optimization

610.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Platelets.blood.co.uk main page is 652.2 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. 55% of websites need less resources to load. Images take 494.3 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 20.9 kB

  • Original 25.8 kB
  • After minification 19.4 kB
  • After compression 4.9 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 6.5 kB, which is 25% 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 20.9 kB or 81% of the original size.

Image Optimization

-4%

Potential reduce by 20.3 kB

  • Original 494.3 kB
  • After minification 474.0 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. Platelets Blood images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 862 B

  • Original 88.9 kB
  • After minification 88.9 kB
  • After compression 88.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 17 B

  • Original 43.2 kB
  • After minification 43.2 kB
  • After compression 43.1 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. Platelets.blood.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 6 (24%)

Requests Now

25

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Platelets Blood. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

platelets.blood.co.uk 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.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Best Practices

platelets.blood.co.uk best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

platelets.blood.co.uk SEO score

91

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

    EN

  • Encoding

    UTF-8

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

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