10.2 sec in total
2.6 sec
7.3 sec
251 ms
Welcome to esi.nus.edu.sg homepage info - get ready to check Esi Nus best content for Singapore right away, or after learning these important things about esi.nus.edu.sg
The Energy Studies Institute (ESI) seeks to advance the understanding of energy issues by conducting independent research and analyses. Through our work, we seek to address, inform and influence publi...
Visit esi.nus.edu.sgWe analyzed Esi.nus.edu.sg page load time and found that the first response time was 2.6 sec and then it took 7.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster. This domain responded with an error, which can significantly jeopardize Esi.nus.edu.sg rating and web reputation
esi.nus.edu.sg performance score
name
value
score
weighting
Value9.9 s
0/100
10%
Value20.1 s
0/100
25%
Value16.4 s
0/100
10%
Value1,450 ms
15/100
30%
Value0
100/100
15%
Value24.6 s
0/100
10%
2622 ms
502 ms
494 ms
500 ms
976 ms
Our browser made a total of 72 requests to load all elements on the main page. We found that 93% of them (67 requests) were addressed to the original Esi.nus.edu.sg, 3% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain Esi.nus.edu.sg.
Page size can be reduced by 1.5 MB (31%)
5.1 MB
3.5 MB
In fact, the total size of Esi.nus.edu.sg main page is 5.1 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. 35% of websites need less resources to load. Images take 4.3 MB which makes up the majority of the site volume.
Potential reduce by 97.4 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 34.4 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 97.4 kB or 88% of the original size.
Potential reduce by 998.8 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, Esi Nus needs image optimization as it can save up to 998.8 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 275.0 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 275.0 kB or 66% of the original size.
Potential reduce by 175.7 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. Esi.nus.edu.sg needs all CSS files to be minified and compressed as it can save up to 175.7 kB or 85% of the original size.
Number of requests can be reduced by 40 (58%)
69
29
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Esi Nus. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.
esi.nus.edu.sg
2622 ms
sm-core-css.css
502 ms
sm-simple.css
494 ms
jquery.bxslider.css
500 ms
skacero_home.css
976 ms
jquery.min.js
34 ms
style.css
716 ms
respon.css
732 ms
flexnav.css
738 ms
ui.totop.css
741 ms
jquery.tweet.css
932 ms
dc_jflickrfeed.css
954 ms
colorbox.css
969 ms
preloader.css
992 ms
prettyPhoto.css
1212 ms
website.css
1168 ms
dc_columns.css
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dc_social_icons.css
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elastislide.css
1209 ms
dc_iso_portfolio.css
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dc_flat_buttons.css
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default.css
1438 ms
nivo-slider.css
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WebResource.axd
1452 ms
Telerik.Web.UI.WebResource.axd
2166 ms
jquery.nivo.slider.pack.js
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twitter.min.js
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swfobject.js
1246 ms
scripts.js
1020 ms
jquery.ui.totop.js
1234 ms
jquery.smartmenus.min.js
1240 ms
jflickrfeed.js
1245 ms
jquery.colorbox-min.js
1261 ms
jquery.preloader.js
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jquery.prettyPhoto.js
1474 ms
hoverIntent.js
1503 ms
superfish.js
1503 ms
supersubs.js
1524 ms
selectnav.min.js
1503 ms
jquery.bxslider.min.js
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esilogo.gif
784 ms
climate
2169 ms
conservation
2877 ms
power
2001 ms
transport
2217 ms
geopolitics
1974 ms
energyandcompetitiveness
3445 ms
slider_info.png
2216 ms
esi2.jpg.tmb
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joint_george.jpg.tmb
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no-image.jpg
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1.png.tmb
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esi-attends-cop21-in-paris-france.jpg.tmb
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photo-courtesy-of-the-eu-delegation-in-singapore.jpg.tmb
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siew.jpg.tmb
2715 ms
esi.png.tmb
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thefutureofsealanesecurity.png
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main_bg.png
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top_link_repeat.gif
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go.jpg
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menu_gray_bg.png
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loading.gif
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dc.js
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ga.js
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MYRIADPRO-REGULAR.woff
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__utm.gif
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preloader-gallery.gif
2434 ms
ui.totop.png
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bx_loader.gif
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twitterlib.js
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esi.nus.edu.sg
246 ms
arrows.png
255 ms
esi.nus.edu.sg accessibility score
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.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
esi.nus.edu.sg 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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
esi.nus.edu.sg SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Tap targets are not sized appropriately
N/A
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Esi.nus.edu.sg 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 Esi.nus.edu.sg 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.
esi.nus.edu.sg
Open Graph description is not detected on the main page of Esi Nus. 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: