Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

speedtest.zen.co.uk

Zen Internet - Speed Test

Page Load Speed

20.9 sec in total

First Response

289 ms

Resources Loaded

20.4 sec

Page Rendered

138 ms

speedtest.zen.co.uk screenshot

About Website

Click here to check amazing Speed Test Zen content for United Kingdom. Otherwise, check out these important facts you probably never knew about speedtest.zen.co.uk

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Key Findings

We analyzed Speedtest.zen.co.uk page load time and found that the first response time was 289 ms and then it took 20.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

speedtest.zen.co.uk performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

97/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

speedtest.zen.co.uk

289 ms

bootstrap.css

185 ms

zenternal.css

197 ms

support.css

202 ms

speedtest-v2.css

202 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 90% of them (9 requests) were addressed to the original Speedtest.zen.co.uk, 10% (1 request) were made to Zen01.speedtest.org.uk. The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source Zen01.speedtest.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 243.7 kB (79%)

Content Size

310.4 kB

After Optimization

66.7 kB

In fact, the total size of Speedtest.zen.co.uk main page is 310.4 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. 20% of websites need less resources to load. Javascripts take 159.4 kB which makes up the majority of the site volume.

HTML Optimization

-60%

Potential reduce by 1.1 kB

  • Original 1.8 kB
  • After minification 1.7 kB
  • After compression 726 B

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 1.1 kB or 60% of the original size.

JavaScript Optimization

-72%

Potential reduce by 114.8 kB

  • Original 159.4 kB
  • After minification 132.9 kB
  • After compression 44.6 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 114.8 kB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 127.8 kB

  • Original 149.2 kB
  • After minification 123.9 kB
  • After compression 21.4 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. Speedtest.zen.co.uk needs all CSS files to be minified and compressed as it can save up to 127.8 kB or 86% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Speed Test Zen. According to our analytics all requests are already optimized.

Accessibility Review

speedtest.zen.co.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.

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

<frame> or <iframe> elements do not have a title

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

Best Practices

speedtest.zen.co.uk best practices score

67

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

speedtest.zen.co.uk SEO score

67

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Speedtest.zen.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 Speedtest.zen.co.uk main page’s claimed encoding is . 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

Open Graph description is not detected on the main page of Speed Test Zen. 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: