1.8 sec in total
57 ms
1.2 sec
538 ms
Click here to check amazing Sei content for China. Otherwise, check out these important facts you probably never knew about sei.org
Stockholm Environment Institute (SEI) is an international non-profit research and policy organization for sustainability policy and practice.
Visit sei.orgWe analyzed Sei.org page load time and found that the first response time was 57 ms and then it took 1.7 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.
sei.org performance score
name
value
score
weighting
Value2.7 s
59/100
10%
Value8.0 s
2/100
25%
Value4.5 s
73/100
10%
Value1,190 ms
21/100
30%
Value1.67
0/100
15%
Value11.8 s
17/100
10%
57 ms
14 ms
59 ms
61 ms
54 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that 88% of them (42 requests) were addressed to the original Sei.org, 8% (4 requests) were made to Cdn.iubenda.com and 2% (1 request) were made to Cs.iubenda.com. The less responsive or slowest element that took the longest time to load (535 ms) belongs to the original domain Sei.org.
Page size can be reduced by 125.9 kB (15%)
865.2 kB
739.3 kB
In fact, the total size of Sei.org main page is 865.2 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. 65% of websites need less resources to load. Images take 562.7 kB which makes up the majority of the site volume.
Potential reduce by 124.6 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 124.6 kB or 78% of the original size.
Potential reduce by 0 B
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. Sei images are well optimized though.
Potential reduce by 1.2 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.
Potential reduce by 122 B
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. Sei.org has all CSS files already compressed.
Number of requests can be reduced by 11 (23%)
47
36
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sei. 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.
www.sei.org
57 ms
style.min.css
14 ms
logo.svg
59 ms
sprite.symbol.svg
61 ms
breeze-prefetch-links.min.js
54 ms
2825234.js
191 ms
stub.js
100 ms
iubenda_cs.js
100 ms
jquery.min.js
76 ms
jquery-migrate.min.js
76 ms
frontend.js
75 ms
script.min.js
82 ms
iubenda_cons.js
98 ms
cons.js
82 ms
picturefill.min.js
87 ms
gettyimages-1053221398-1800x770.webp
41 ms
newsletter-background.svg
44 ms
core-8fdcb29dc2a89f2172df78c5f7cb048f.js
51 ms
gettyimages-1204862832-1-748x420.webp
35 ms
gettyimages-519692927-748x420.webp
31 ms
img-7096-748x420.webp
34 ms
gettyimages-579978515-748x420.webp
33 ms
featured-unsplash-kufsor1-f-s-748x420.jpg
31 ms
seicurrents2023-web-748x420.png
33 ms
featured-unsplash-at60blzvcxo-748x420.jpg
34 ms
appolinary-kalashnikova-wyghtlym344-unsplash-748x420.jpg
35 ms
20190403-033754330-ios-1-1000x420.webp
506 ms
gettyimages-1179177396-cropped-274x152.webp
35 ms
nasa-xfo2xt33xgi-unsplash-274x152.webp
305 ms
gettyimages-12081452572-274x152.webp
35 ms
currentsheader2024-1-274x152.webp
35 ms
ai-and-humans-2024-748x420.webp
415 ms
centre-map-small-201905-748x420.webp
38 ms
ppt-sei-interview-748x420.webp
38 ms
screenshot-2023-08-11-at-15.37.22-748x420.webp
39 ms
hendrik-cornelissen-0nm8aassj30-unsplash-748x420.webp
41 ms
peter-borter-evvcdnegqt4-unsplash-2-1000x561.webp
43 ms
air-pollution-discussion-with-president-kenyatta-748x420.webp
44 ms
gettyimages-1243319348-cmyk-748x420.webp
50 ms
tupiza-city-plan-for-sustainable-use-of-resources-748x420.webp
535 ms
estonian-parliament-building-bex-walton-748x420.webp
60 ms
cop-15-montreal-52573825842-573cb29684-o-748x420.webp
62 ms
chrp-philippines2-748x420.webp
70 ms
pexels-michael-burrows-7129004-1000x561.webp
454 ms
road-7425079-1280-748x420.webp
79 ms
quindio-3977049-1280-748x420.webp
92 ms
oxford-1378641-1280-748x420.webp
104 ms
park-life-2251981-1280-748x420.webp
115 ms
sei.org accessibility score
sei.org 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
Page has valid source maps
sei.org 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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sei.org 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 Sei.org 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.
sei.org
Open Graph data is detected on the main page of Sei. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: