Tools & Wizards About Us
doublefelix.co.uk screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

doublefelix.co.uk

IT Leadership Consultancy | South East England | Double Felix

Page Load Speed

1.6 sec in total

First Response

82 ms

Resources Loaded

1.4 sec

Page Rendered

61 ms

doublefelix.co.uk screenshot

About Website

Click here to check amazing Double Felix content. Otherwise, check out these important facts you probably never knew about doublefelix.co.uk

Double Felix is an IT Leadership Consultancy that specialises in bridging the gap between business and IT. We provide business driven IT solutions on a virtual 'as required' basis.

Visit doublefelix.co.uk

Key Findings

We analyzed Doublefelix.co.uk page load time and found that the first response time was 82 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

doublefelix.co.uk performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.71

7/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

Network Requests Diagram

www.doublefelix.co.uk

82 ms

minified.js

34 ms

focus-within-polyfill.js

33 ms

polyfill.min.js

29 ms

thunderbolt-commons.dae61f88.bundle.min.js

100 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Doublefelix.co.uk, 34% (16 requests) were made to Static.parastorage.com and 30% (14 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 633.1 kB (47%)

Content Size

1.3 MB

After Optimization

705.9 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Doublefelix.co.uk main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. HTML takes 611.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 493.7 kB

  • Original 611.2 kB
  • After minification 609.4 kB
  • After compression 117.5 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 493.7 kB or 81% of the original size.

Image Optimization

-29%

Potential reduce by 135.1 kB

  • Original 464.9 kB
  • After minification 329.8 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. Obviously, Double Felix needs image optimization as it can save up to 135.1 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 4.3 kB

  • Original 262.9 kB
  • After minification 262.9 kB
  • After compression 258.7 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.

Requests Breakdown

Number of requests can be reduced by 11 (37%)

Requests Now

30

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Double Felix. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.doublefelix.co.uk

www.doublefelix.co.uk

82 ms

minified.js

minified.js

34 ms

focus-within-polyfill.js

focus-within-polyfill.js

33 ms

polyfill.min.js

polyfill.min.js

29 ms

thunderbolt-commons.dae61f88.bundle.min.js

thunderbolt-commons.dae61f88.bundle.min.js

100 ms

main.de20c391.bundle.min.js

main.de20c391.bundle.min.js

114 ms

main.renderer.1d21f023.bundle.min.js

main.renderer.1d21f023.bundle.min.js

98 ms

lodash.min.js

lodash.min.js

114 ms

react.production.min.js

react.production.min.js

99 ms

react-dom.production.min.js

react-dom.production.min.js

101 ms

browser-deprecation.bundle.es5.js

browser-deprecation.bundle.es5.js

114 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

114 ms

Double-Felix-Logo.png

Double-Felix-Logo.png

426 ms

bundle.min.js

bundle.min.js

70 ms

f400d7_f6689075b915483d8285d35879fdb48f~mv2_d_4982_2200_s_2.jpeg

f400d7_f6689075b915483d8285d35879fdb48f~mv2_d_4982_2200_s_2.jpeg

385 ms

f400d7_f4805f7c22e74cda8f2bec0c46c023fe~mv2_d_5760_3840_s_4_2.jpeg

f400d7_f4805f7c22e74cda8f2bec0c46c023fe~mv2_d_5760_3840_s_4_2.jpeg

323 ms

f400d7_1f9c6505661c42bb8950a16498838321~mv2.jpg

f400d7_1f9c6505661c42bb8950a16498838321~mv2.jpg

435 ms

f400d7_c7d1c8beba7849a4895622dc5cda14ad~mv2_d_1920_1280_s_2.jpg

f400d7_c7d1c8beba7849a4895622dc5cda14ad~mv2_d_1920_1280_s_2.jpg

480 ms

f400d7_aa7f3d68e6274cefb8fc1a50b3d4a23c~mv2_d_1920_1438_s_2.jpg

f400d7_aa7f3d68e6274cefb8fc1a50b3d4a23c~mv2_d_1920_1438_s_2.jpg

348 ms

f400d7_3db14a6c29eb48549748edf09f29dfa7~mv2_d_4200_2800_s_4_2.jpg

f400d7_3db14a6c29eb48549748edf09f29dfa7~mv2_d_4200_2800_s_4_2.jpg

815 ms

TMF_edited.jpg

TMF_edited.jpg

682 ms

_MG_7263.jpg

_MG_7263.jpg

656 ms

Barney.jpg

Barney.jpg

750 ms

d564cb_df06b35a93c241b99d3c052505df963a~mv2.webp

d564cb_df06b35a93c241b99d3c052505df963a~mv2.webp

725 ms

d564cb_df06b35a93c241b99d3c052505df963a~mv2.webp

d564cb_df06b35a93c241b99d3c052505df963a~mv2.webp

657 ms

d564cb_23db9f6ae0e04f7085cf065afe239241~mv2.webp

d564cb_23db9f6ae0e04f7085cf065afe239241~mv2.webp

1094 ms

GDB_members_logo.jpg

GDB_members_logo.jpg

900 ms

101 ms

96 ms

100 ms

97 ms

103 ms

93 ms

139 ms

131 ms

137 ms

143 ms

135 ms

139 ms

179 ms

deprecation-en.v5.html

deprecation-en.v5.html

4 ms

bolt-performance

bolt-performance

16 ms

deprecation-style.v5.css

deprecation-style.v5.css

4 ms

right-arrow.svg

right-arrow.svg

13 ms

WixMadeforDisplay_W_Bd.woff

WixMadeforDisplay_W_Bd.woff

4 ms

WixMadeforText_W_Bd.woff

WixMadeforText_W_Bd.woff

5 ms

WixMadeforText_W_Rg.woff

WixMadeforText_W_Rg.woff

8 ms

Accessibility Review

doublefelix.co.uk accessibility score

92

Accessibility Issues

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

Buttons do not have an accessible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

doublefelix.co.uk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

doublefelix.co.uk SEO score

99

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 Doublefelix.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 Doublefelix.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

doublefelix.co.uk

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