Report Summary

  • 94

    Performance

    Renders faster than
    93% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

calculusbooks.co.uk

Book-keeper Kings Langley, Watford, Bushey, & Hemel Hempstead

Page Load Speed

541 ms in total

First Response

53 ms

Resources Loaded

377 ms

Page Rendered

111 ms

calculusbooks.co.uk screenshot

About Website

Visit calculusbooks.co.uk now to see the best up-to-date Calculus Book S content and also check out these interesting facts you probably never knew about calculusbooks.co.uk

Want to save money on your accountancy fees by using an experienced book-keeper? Although we’re based in Kings Langley, our clients are from around the area including Watford, Bushey & Hemel Hempstead...

Visit calculusbooks.co.uk

Key Findings

We analyzed Calculusbooks.co.uk page load time and found that the first response time was 53 ms and then it took 488 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

calculusbooks.co.uk performance score

94

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

83/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

calculusbooks.co.uk

53 ms

calculusbooks.co.uk

82 ms

screen58ac.css

56 ms

prototype.js

73 ms

jquery-1.5.min.js

39 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 80% of them (8 requests) were addressed to the original Calculusbooks.co.uk, 20% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (124 ms) belongs to the original domain Calculusbooks.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 37.5 kB (54%)

Content Size

69.4 kB

After Optimization

31.9 kB

In fact, the total size of Calculusbooks.co.uk main page is 69.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Javascripts take 46.3 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 8.3 kB

  • Original 11.7 kB
  • After minification 8.1 kB
  • After compression 3.4 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 3.7 kB, which is 31% 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 8.3 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 11.4 kB
  • After minification 11.4 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. Calculus Book S images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 29.1 kB

  • Original 46.3 kB
  • After minification 46.3 kB
  • After compression 17.1 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 29.1 kB or 63% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calculus Book S. According to our analytics all requests are already optimized.

Accessibility Review

calculusbooks.co.uk accessibility score

87

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.

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

calculusbooks.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

calculusbooks.co.uk SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Calculusbooks.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 Calculusbooks.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 description is not detected on the main page of Calculus Book S. 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: