Tools & Wizards About Us
mercury-av.com screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

mercury-av.com

Mercury AV Ltd - Visit our website to buy a new PA System or Live Sound Equipment

Page Load Speed

2.4 sec in total

First Response

271 ms

Resources Loaded

1.9 sec

Page Rendered

256 ms

mercury-av.com screenshot

About Website

Click here to check amazing Mercury AV content for United Kingdom. Otherwise, check out these important facts you probably never knew about mercury-av.com

Mercury AV Ltd are based in Welwyn Garden City, Hertfordshire and supply professional audio equipment to customers across the UK.

Visit mercury-av.com

Key Findings

We analyzed Mercury-av.com page load time and found that the first response time was 271 ms and then it took 2.1 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

mercury-av.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

5/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.331

34/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

mercury-av.com

271 ms

mercury-av.com

461 ms

css

57 ms

normalize.css

90 ms

foundation.css

427 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 65% of them (24 requests) were addressed to the original Mercury-av.com, 8% (3 requests) were made to Google-analytics.com and 5% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (579 ms) belongs to the original domain Mercury-av.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 553.5 kB (61%)

Content Size

911.1 kB

After Optimization

357.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mercury-av.com main page is 911.1 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. 40% of websites need less resources to load. Javascripts take 426.7 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 23.3 kB

  • Original 30.8 kB
  • After minification 30.8 kB
  • After compression 7.5 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 23.3 kB or 76% of the original size.

Image Optimization

-5%

Potential reduce by 8.8 kB

  • Original 188.8 kB
  • After minification 180.1 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. Mercury AV images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 281.3 kB

  • Original 426.7 kB
  • After minification 380.1 kB
  • After compression 145.4 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 281.3 kB or 66% of the original size.

CSS Optimization

-91%

Potential reduce by 240.2 kB

  • Original 264.7 kB
  • After minification 135.1 kB
  • After compression 24.6 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. Mercury-av.com needs all CSS files to be minified and compressed as it can save up to 240.2 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (47%)

Requests Now

32

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mercury AV. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

mercury-av.com

mercury-av.com

271 ms

mercury-av.com

mercury-av.com

461 ms

css

css

57 ms

normalize.css

normalize.css

90 ms

foundation.css

foundation.css

427 ms

expansion.css

expansion.css

238 ms

font-awesome.min.css

font-awesome.min.css

52 ms

actinic.css

actinic.css

403 ms

custom.modernizr.js

custom.modernizr.js

244 ms

jquery.min.js

jquery.min.js

44 ms

sellerdeck.min.js

sellerdeck.min.js

579 ms

tp.widget.sync.bootstrap.min.js

tp.widget.sync.bootstrap.min.js

41 ms

embed.min.js

embed.min.js

68 ms

foundation.min.js

foundation.min.js

422 ms

expansion.js

expansion.js

548 ms

analytics.js

analytics.js

74 ms

headbg1.jpg

headbg1.jpg

166 ms

logo1x.png

logo1x.png

119 ms

free-del.jpg

free-del.jpg

120 ms

dpd-predict.jpg

dpd-predict.jpg

164 ms

trustpilot.jpg

trustpilot.jpg

120 ms

1000x200-ew-dx-banner.png

1000x200-ew-dx-banner.png

212 ms

SK-300-G4-RC-GBW.jpg

SK-300-G4-RC-GBW.jpg

209 ms

BD-MP1-MKII.jpg

BD-MP1-MKII.jpg

210 ms

IK41-DANTE.jpg

IK41-DANTE.jpg

210 ms

MZH8020.jpg

MZH8020.jpg

221 ms

ccards2.png

ccards2.png

226 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

43 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiYA.ttf

90 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

20 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

90 ms

sprite.png

sprite.png

279 ms

ecommerce.js

ecommerce.js

37 ms

collect

collect

33 ms

js

js

154 ms

NXAMPMKII.jpg

NXAMPMKII.jpg

92 ms

RCF-TT.jpg

RCF-TT.jpg

91 ms

Accessibility Review

mercury-av.com accessibility score

65

Accessibility Issues

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-*] attributes do not match their roles

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

High

[aria-*] attributes do not have valid values

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

mercury-av.com 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

High

Page has valid source maps

SEO Factors

mercury-av.com SEO score

90

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

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

High

Tap targets are not sized appropriately

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 Mercury-av.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 Mercury-av.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

mercury-av.com

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