2.6 sec in total
244 ms
2.1 sec
193 ms
Visit nationalstemcentre.org.uk now to see the best up-to-date Nationalstemcentre content for United Kingdom and also check out these interesting facts you probably never knew about nationalstemcentre.org.uk
Visit nationalstemcentre.org.ukWe analyzed Nationalstemcentre.org.uk page load time and found that the first response time was 244 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
nationalstemcentre.org.uk performance score
name
value
score
weighting
Value5.4 s
7/100
10%
Value12.7 s
0/100
25%
Value7.9 s
23/100
10%
Value170 ms
93/100
30%
Value0.526
14/100
15%
Value10.2 s
25/100
10%
244 ms
470 ms
113 ms
226 ms
266 ms
Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Nationalstemcentre.org.uk, 91% (31 requests) were made to Stem.org.uk and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (670 ms) relates to the external source Stem.org.uk.
Page size can be reduced by 448.9 kB (64%)
697.0 kB
248.2 kB
In fact, the total size of Nationalstemcentre.org.uk main page is 697.0 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. 30% of websites need less resources to load. Javascripts take 324.9 kB which makes up the majority of the site volume.
Potential reduce by 20.5 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 20.5 kB or 73% of the original size.
Potential reduce by 11.3 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. Obviously, Nationalstemcentre needs image optimization as it can save up to 11.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 223.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 223.7 kB or 69% of the original size.
Potential reduce by 193.4 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. Nationalstemcentre.org.uk needs all CSS files to be minified and compressed as it can save up to 193.4 kB or 79% of the original size.
Number of requests can be reduced by 11 (38%)
29
18
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nationalstemcentre. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
nationalstemcentre.org.uk
244 ms
www.stem.org.uk
470 ms
css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css
113 ms
css_pJ4e_CLkI9bIX5F4ok4auzNtUfM5qcTiqtlX1yVw4H0.css
226 ms
css_atkFGFlvG6sSQcIj6Q73rpgsXhtr58AwITc2aQjVotk.css
266 ms
css_9q-TRB8xn1eTk79mtomGrFGcpdZ4bbhXvPP_hc2Lspg.css
408 ms
css_Vb00Pr9vSIM-lATcQ8LDte3exOF0sEksIdamFX2WZFk.css
579 ms
js_MpKfe1sTh5JIVGCZ17DsAuT1rqAC38MLLlkjqjQ1X_k.js
602 ms
js_fnFMT3X1_bhCDaBABvWwi8Yq5Useb8r_XorbufldYMA.js
299 ms
js_COMsmDyrY9mzVU28X2uGvF4Ba3vd5eTo5xEO7dvCUZM.js
435 ms
js_I8yX6RYPZb7AtMcDUA3QKDZqVkvEn35ED11_1i7vVpc.js
465 ms
js_mMgVje4wrRCQqpuTqbZhPrB6dV_I2l7NcfuZ-x1mdjY.js
670 ms
modernizr.min.js
501 ms
js_fDpJXi8hM7P1ozpwHUovUkgb-mkIIgFYS7yzYS6p6zY.js
634 ms
analytics.js
32 ms
collect
226 ms
logo-stem-new.svg
209 ms
Computing%20Conference%20with%20CAS%20Regional%20Centre%20for%20Yorkshire%20and%20Humber.jpg
209 ms
British%20Science%20Week%20%281%29.jpg
219 ms
Using%20games%20to%20teach%20mathematics.jpg
287 ms
In%20at%20the%20deep%20end%20%E2%80%93%20non-specialists%20teaching%20computer%20science.jpg
247 ms
Core%20Maths%20Support%20Programme.jpg
307 ms
Demo%20insights.jpg
260 ms
WEB-ICONS_325px-wide-resour.gif
297 ms
WEB-ICONS_325px-wide-CPD.gif
334 ms
WEB-ICONS_325px-wide-magazi.gif
370 ms
WEB-ICONS_325px-wide-bursar.gif
406 ms
WEB-ICONS_325px-wide-workin.gif
446 ms
WEB-ICONS_325px-wide-yourda_0.gif
479 ms
logo-stem-new-white.svg
476 ms
logo-enthuse-white.svg
479 ms
Bliss2Rg.woff
461 ms
Bliss2Bd.woff
435 ms
Bliss2Lt.woff
486 ms
nationalstemcentre.org.uk accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
nationalstemcentre.org.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
nationalstemcentre.org.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
N/A
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nationalstemcentre.org.uk can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Nationalstemcentre.org.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.
nationalstemcentre.org.uk
Open Graph description is not detected on the main page of Nationalstemcentre. 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: