2.6 sec in total
362 ms
2.1 sec
91 ms
Welcome to irfu.se homepage info - get ready to check Irfu best content right away, or after learning these important things about irfu.se
Swedish Institute of Space Physics webpages
Visit irfu.seWe analyzed Irfu.se page load time and found that the first response time was 362 ms and then it took 2.2 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.
irfu.se performance score
name
value
score
weighting
Value2.8 s
57/100
10%
Value3.3 s
68/100
25%
Value4.4 s
75/100
10%
Value140 ms
95/100
30%
Value0.079
94/100
15%
Value4.8 s
78/100
10%
362 ms
458 ms
110 ms
220 ms
329 ms
Our browser made a total of 15 requests to load all elements on the main page. We found that 60% of them (9 requests) were addressed to the original Irfu.se, 33% (5 requests) were made to Irf.varbi.com and 7% (1 request) were made to Irfu.report-uri.io. The less responsive or slowest element that took the longest time to load (877 ms) relates to the external source Irf.varbi.com.
Page size can be reduced by 18.1 kB (28%)
64.9 kB
46.8 kB
In fact, the total size of Irfu.se main page is 64.9 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. Javascripts take 30.4 kB which makes up the majority of the site volume.
Potential reduce by 6.0 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 1.9 kB, which is 24% 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 6.0 kB or 77% of the original size.
Potential reduce by 12 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.
Potential reduce by 12.1 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. Irfu.se needs all CSS files to be minified and compressed as it can save up to 12.1 kB or 45% of the original size.
Number of requests can be reduced by 3 (25%)
12
9
The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Irfu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.
irfu.se
362 ms
irfu.se
458 ms
main.css
110 ms
irf.css.css
220 ms
get_document.htm
329 ms
reportOnly
54 ms
877 ms
get_document.gif
354 ms
irf_uppsala.gif
354 ms
angstr2.GIF
546 ms
fl_swe.gif
354 ms
bootstrap.css
108 ms
iframe.css
213 ms
jquery.min.js
426 ms
sortup.gif
316 ms
irfu.se 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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
irfu.se best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
irfu.se SEO score
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
EN
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Irfu.se 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 Irfu.se main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
irfu.se
Open Graph description is not detected on the main page of Irfu. 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: