2.1 sec in total
10 ms
947 ms
1.1 sec
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Visit thedataschool.co.ukWe analyzed Thedataschool.co.uk page load time and found that the first response time was 10 ms and then it took 2 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.
thedataschool.co.uk performance score
name
value
score
weighting
Value4.7 s
12/100
10%
Value17.9 s
0/100
25%
Value11.9 s
4/100
10%
Value12,660 ms
0/100
30%
Value0.069
96/100
15%
Value28.0 s
0/100
10%
10 ms
402 ms
548 ms
323 ms
45 ms
Our browser made a total of 12 requests to load all elements on the main page. We found that 83% of them (10 requests) were addressed to the original Thedataschool.co.uk, 8% (1 request) were made to Googletagmanager.com and 8% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (548 ms) belongs to the original domain Thedataschool.co.uk.
Page size can be reduced by 114.9 kB (63%)
182.1 kB
67.2 kB
In fact, the total size of Thedataschool.co.uk main page is 182.1 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. Only 10% of websites need less resources to load. HTML takes 161.1 kB which makes up the majority of the site volume.
Potential reduce by 114.8 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 114.8 kB or 71% of the original size.
Potential reduce by 50 B
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.
Number of requests can be reduced by 8 (80%)
10
2
The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Data School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
thedataschool.co.uk
10 ms
thedataschool.co.uk
402 ms
createjs.min.js
548 ms
dsWelcome.js
323 ms
js
45 ms
polyfill-18ef5e969a4f51663dc4.js
337 ms
app-6fff5b91c93f1e17ca37.js
240 ms
dc6a8720040df98778fe970bf6c000a41750d3ae-cfd190d366c1c44a4675.js
242 ms
framework-7a16630869772973a0b4.js
400 ms
webpack-runtime-f07105ef66000cb7e2fc.js
289 ms
hamburg-c49f312fef5bc304a458bba1308937bc.svg
108 ms
analytics.js
18 ms
thedataschool.co.uk accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Definition list items are not wrapped in <dl> elements
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
thedataschool.co.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
thedataschool.co.uk SEO score
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
Document uses legible font sizes
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thedataschool.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 Thedataschool.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.
thedataschool.co.uk
Open Graph description is not detected on the main page of The Data School. 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: