Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

thevatcalculator.co.uk

The VAT Calculator - calculate VAT to add or subtract from a price

Page Load Speed

3.1 sec in total

First Response

284 ms

Resources Loaded

2.6 sec

Page Rendered

147 ms

thevatcalculator.co.uk screenshot

About Website

Click here to check amazing The VAT Calculator content for United Kingdom. Otherwise, check out these important facts you probably never knew about thevatcalculator.co.uk

The VAT Calculator helps you calculate VAT to add or subtract from a price, at different rates of VAT, compare 20% VAT and 17.5% VAT.

Visit thevatcalculator.co.uk

Key Findings

We analyzed Thevatcalculator.co.uk page load time and found that the first response time was 284 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

thevatcalculator.co.uk performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

39/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value1,070 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.4 s

30/100

10%

Network Requests Diagram

thevatcalculator.co.uk

284 ms

www.thevatcalculator.co.uk

484 ms

styles.css

169 ms

jquery.min.js

6 ms

jquery-ui.min.js

10 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 6% of them (5 requests) were addressed to the original Thevatcalculator.co.uk, 19% (17 requests) were made to Speed-s.pointroll.com and 7% (6 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (584 ms) relates to the external source Js.dmtry.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 467.3 kB (60%)

Content Size

783.7 kB

After Optimization

316.4 kB

In fact, the total size of Thevatcalculator.co.uk main page is 783.7 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. 60% of websites need less resources to load. Javascripts take 639.7 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 15.9 kB

  • Original 22.3 kB
  • After minification 22.1 kB
  • After compression 6.3 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 15.9 kB or 72% of the original size.

Image Optimization

-6%

Potential reduce by 6.1 kB

  • Original 96.4 kB
  • After minification 90.3 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. The VAT Calculator images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 423.7 kB

  • Original 639.7 kB
  • After minification 596.2 kB
  • After compression 216.0 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 423.7 kB or 66% of the original size.

CSS Optimization

-85%

Potential reduce by 21.5 kB

  • Original 25.2 kB
  • After minification 19.8 kB
  • After compression 3.7 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. Thevatcalculator.co.uk needs all CSS files to be minified and compressed as it can save up to 21.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (63%)

Requests Now

80

After Optimization

30

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The VAT Calculator. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

thevatcalculator.co.uk accessibility score

85

Accessibility Issues

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

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

Form elements do not have associated labels

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

thevatcalculator.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

thevatcalculator.co.uk SEO score

79

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

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

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