Tools & Wizards About Us
davidslack.co.uk screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 65

    SEO

    Google-friendlier than
    25% of websites

davidslack.co.uk

David Slack - Web developer | Just ask if you need any help

Page Load Speed

4.1 sec in total

First Response

208 ms

Resources Loaded

3.6 sec

Page Rendered

325 ms

davidslack.co.uk screenshot

About Website

Visit davidslack.co.uk now to see the best up-to-date David Slack content and also check out these interesting facts you probably never knew about davidslack.co.uk

I’ve been a web developer for over 15 years and a Drupal developer for 5 years. I’m filling these pages with things I find useful

Visit davidslack.co.uk

Key Findings

We analyzed Davidslack.co.uk page load time and found that the first response time was 208 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

davidslack.co.uk performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value10.4 s

0/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.506

16/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

davidslack.co.uk

208 ms

davidslack.co.uk

341 ms

www.davidslack.co.uk

414 ms

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

83 ms

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

165 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 70% of them (62 requests) were addressed to the original Davidslack.co.uk, 20% (18 requests) were made to Platform.twitter.com and 4% (4 requests) were made to Lastfm.freetls.fastly.net. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Lastfm.freetls.fastly.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 126.9 kB (20%)

Content Size

635.6 kB

After Optimization

508.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Davidslack.co.uk main page is 635.6 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. 50% of websites need less resources to load. Images take 441.7 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 61.3 kB

  • Original 74.7 kB
  • After minification 69.7 kB
  • After compression 13.4 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. 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 61.3 kB or 82% of the original size.

Image Optimization

-11%

Potential reduce by 46.5 kB

  • Original 441.7 kB
  • After minification 395.1 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. Obviously, David Slack needs image optimization as it can save up to 46.5 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-18%

Potential reduce by 18.6 kB

  • Original 102.8 kB
  • After minification 102.8 kB
  • After compression 84.1 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 18.6 kB or 18% of the original size.

CSS Optimization

-3%

Potential reduce by 425 B

  • Original 16.5 kB
  • After minification 16.5 kB
  • After compression 16.1 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. Davidslack.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 43 (51%)

Requests Now

85

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of David Slack. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

davidslack.co.uk

davidslack.co.uk

208 ms

davidslack.co.uk

davidslack.co.uk

341 ms

www.davidslack.co.uk

www.davidslack.co.uk

414 ms

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

83 ms

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

165 ms

css_f0tXBMCEzX6Ci87_bxECYhMW0wJpraWZkbbMjrslxjc.css

css_f0tXBMCEzX6Ci87_bxECYhMW0wJpraWZkbbMjrslxjc.css

247 ms

css_ADE1nZX9vYioMO8vVGI2lmG7yB1V9QPtDRNGUN3WLn0.css

css_ADE1nZX9vYioMO8vVGI2lmG7yB1V9QPtDRNGUN3WLn0.css

245 ms

css3.css

css3.css

248 ms

css_4Ionadb7wYKLk8j7L85yxSIl-ac6TgEG-2BeCgbX_uI.css

css_4Ionadb7wYKLk8j7L85yxSIl-ac6TgEG-2BeCgbX_uI.css

248 ms

js_xAPl0qIk9eowy_iS9tNkCWXLUVoat94SQT48UBCFkyQ.js

js_xAPl0qIk9eowy_iS9tNkCWXLUVoat94SQT48UBCFkyQ.js

330 ms

js_d-YjtzqOAfj-lj2jSZqeUR1Cn-BjM9l6tANrW8YSKmE.js

js_d-YjtzqOAfj-lj2jSZqeUR1Cn-BjM9l6tANrW8YSKmE.js

338 ms

js_oYQw43wAjKdM3p6nU1hLDI3mDgL3UfCyqPsngNU6GnY.js

js_oYQw43wAjKdM3p6nU1hLDI3mDgL3UfCyqPsngNU6GnY.js

326 ms

js_qvAeCwv0lX4dK-EMdTxMQWCtsNUWR1fSWA2YizYwBiU.js

js_qvAeCwv0lX4dK-EMdTxMQWCtsNUWR1fSWA2YizYwBiU.js

408 ms

js_jQ5GJfr2xLKWiHdOWTLAtOLd8hoBUXeONL98inw8eDE.js

js_jQ5GJfr2xLKWiHdOWTLAtOLd8hoBUXeONL98inw8eDE.js

414 ms

ga.js

ga.js

50 ms

loading.gif

loading.gif

95 ms

mid-content-back.gif

mid-content-back.gif

96 ms

logo.png

logo.png

95 ms

feed.png

feed.png

96 ms

Luckyfingers.png

Luckyfingers.png

172 ms

lost-and-found-page.jpg

lost-and-found-page.jpg

98 ms

tech-genome-logo.jpg

tech-genome-logo.jpg

171 ms

senua-home.jpg

senua-home.jpg

251 ms

bubble-bee.jpg

bubble-bee.jpg

172 ms

lost-and-found-page.jpg

lost-and-found-page.jpg

171 ms

tech-genome-logo.jpg

tech-genome-logo.jpg

172 ms

bubble-bee.jpg

bubble-bee.jpg

250 ms

Luckyfingers.png

Luckyfingers.png

260 ms

tna.jpg

tna.jpg

261 ms

David%20Slack%20-%20Web%20developer%20-%20Just%20ask%20if%20you%20need%20any%20help.png

David%20Slack%20-%20Web%20developer%20-%20Just%20ask%20if%20you%20need%20any%20help.png

262 ms

ess-newton.jpg

ess-newton.jpg

261 ms

senua-home.jpg

senua-home.jpg

360 ms

arm-and-eye-site_0.jpg

arm-and-eye-site_0.jpg

361 ms

Elevator%20Studios.png

Elevator%20Studios.png

363 ms

luna-website.jpg

luna-website.jpg

361 ms

layout_0.png

layout_0.png

364 ms

dtm.jpg

dtm.jpg

361 ms

ds-card-website_0.jpg

ds-card-website_0.jpg

438 ms

satandcable-site.jpg

satandcable-site.jpg

438 ms

lilly-grove.jpg

lilly-grove.jpg

439 ms

relish_0.jpg

relish_0.jpg

439 ms

AM_home_page.jpg

AM_home_page.jpg

440 ms

29North_0.jpg

29North_0.jpg

439 ms

Farango%20design%2003-09-2010%20%282%29.jpg

Farango%20design%2003-09-2010%20%282%29.jpg

492 ms

symfony_black_03.png

symfony_black_03.png

495 ms

fold_0.gif

fold_0.gif

496 ms

small_barcode.gif

small_barcode.gif

500 ms

widgets.js

widgets.js

45 ms

560 ms

header-back.jpg

header-back.jpg

469 ms

__utm.gif

__utm.gif

17 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

20 ms

settings

settings

98 ms

timeline.e108540dddc96e4b707f5cf259a582d7.js

timeline.e108540dddc96e4b707f5cf259a582d7.js

2 ms

davidkslack

davidkslack

65 ms

polyfills-a40ef1678bae11e696dba45124eadd70.js

polyfills-a40ef1678bae11e696dba45124eadd70.js

3 ms

runtime-b1c52fd0a13ead5fcf6b.js

runtime-b1c52fd0a13ead5fcf6b.js

25 ms

modules-96ebc7ac3ad66d681a3d.js

modules-96ebc7ac3ad66d681a3d.js

29 ms

main-babd9234dc048fb47339.js

main-babd9234dc048fb47339.js

42 ms

_app-a9c9f1a99e4414675fb1.js

_app-a9c9f1a99e4414675fb1.js

41 ms

%5BscreenName%5D-0517bdda27d5006a5a2d.js

%5BscreenName%5D-0517bdda27d5006a5a2d.js

42 ms

_buildManifest.js

_buildManifest.js

74 ms

_ssgManifest.js

_ssgManifest.js

41 ms

8526.0c32a8f0cfc5749221a3.js

8526.0c32a8f0cfc5749221a3.js

18 ms

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18 ms

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7 ms

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11 ms

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1362.42d432e02f7980bca032.js

11 ms

4956.c4e51ef593974b9db0bb.js

4956.c4e51ef593974b9db0bb.js

11 ms

5893.d500bd2a89ded806aa73.js

5893.d500bd2a89ded806aa73.js

10 ms

css_4rpZ1fu1H2w2_uZMf0cKwu24OFy4iGGsHwZ-6X9czrU.css

css_4rpZ1fu1H2w2_uZMf0cKwu24OFy4iGGsHwZ-6X9czrU.css

93 ms

bottom-content-back.jpg

bottom-content-back.jpg

92 ms

hor-1.gif

hor-1.gif

93 ms

vert-3.gif

vert-3.gif

94 ms

grey-trans.png

grey-trans.png

93 ms

animate-logo.gif

animate-logo.gif

84 ms

header-links-border.png

header-links-border.png

83 ms

header-links-back.png

header-links-back.png

83 ms

search-back.gif

search-back.gif

84 ms

bottom-curve-and-line.png

bottom-curve-and-line.png

83 ms

grey-trans-dark.png

grey-trans-dark.png

83 ms

social-network-logos.png

social-network-logos.png

163 ms

spot-light-white.png

spot-light-white.png

164 ms

button-back.png

button-back.png

164 ms

at-rotis-serif-italic.woff

at-rotis-serif-italic.woff

163 ms

84d8e7ab301df9f5c53f079155f3fdee.jpg

84d8e7ab301df9f5c53f079155f3fdee.jpg

23 ms

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20 ms

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426f10a255a07002b3702e4bc275ec44.jpg

24 ms

7267e464d34f49c7a297c329171dc788.jpg

7267e464d34f49c7a297c329171dc788.jpg

1576 ms

Accessibility Review

davidslack.co.uk accessibility score

83

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

davidslack.co.uk best practices score

75

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

davidslack.co.uk SEO score

65

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 doesn't use 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 Davidslack.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 Davidslack.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

davidslack.co.uk

Open Graph description is not detected on the main page of David Slack. 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: