4.2 sec in total
276 ms
2.7 sec
1.2 sec
Visit iszn.ch now to see the best up-to-date ISZN content for Switzerland and also check out these interesting facts you probably never knew about iszn.ch
International School Zurich North provides exceptional education to children aged 3-18. Learn more about our inclusive community today.
Visit iszn.chWe analyzed Iszn.ch page load time and found that the first response time was 276 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
iszn.ch performance score
name
value
score
weighting
Value4.6 s
14/100
10%
Value7.5 s
4/100
25%
Value10.0 s
9/100
10%
Value4,280 ms
1/100
30%
Value0.002
100/100
15%
Value14.4 s
9/100
10%
276 ms
918 ms
337 ms
84 ms
95 ms
Our browser made a total of 52 requests to load all elements on the main page. We found that 63% of them (33 requests) were addressed to the original Iszn.ch, 10% (5 requests) were made to Fonts.gstatic.com and 4% (2 requests) were made to Consent.cookiebot.com. The less responsive or slowest element that took the longest time to load (918 ms) belongs to the original domain Iszn.ch.
Page size can be reduced by 393.8 kB (27%)
1.5 MB
1.1 MB
In fact, the total size of Iszn.ch main page is 1.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 999.7 kB which makes up the majority of the site volume.
Potential reduce by 271.1 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 49.5 kB, which is 16% 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 271.1 kB or 86% of the original size.
Potential reduce by 35.6 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. ISZN images are well optimized though.
Potential reduce by 87.1 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 87.1 kB or 61% of the original size.
Number of requests can be reduced by 16 (40%)
40
24
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ISZN. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
iszn.ch
276 ms
www.iszn.ch
918 ms
gtm.js
337 ms
recorder.js
84 ms
uc.js
95 ms
css
85 ms
16 ms
678 ms
slick.css
92 ms
73 ms
79 ms
api.js
331 ms
361 ms
popper.min.js
329 ms
360 ms
e-202240.js
78 ms
configuration.js
305 ms
cc.js
264 ms
ISZN_StackedLogo_White.svg
87 ms
en.png
53 ms
german-flag.png
86 ms
ib-world-school-logo-1-colour-rev.png
92 ms
CIS_Member_icon-3_RGB.png
92 ms
caie.png
91 ms
Pearson-logo.png
94 ms
cognita-logo.svg
183 ms
spinner-white.svg
92 ms
bc-v4.min.html
77 ms
analytics.js
34 ms
collect
24 ms
Header-2.jpg
133 ms
A-levels-and-beyond.jpg
15 ms
Jonathan-Taylor-Welcome-1-1024x634-1.jpg
126 ms
Middle-school.jpg
16 ms
ISZN_Community-1024x625-2.jpg
15 ms
Welcome-to-ISZN.jpg
128 ms
Wraparound-care-1.jpg
128 ms
ISZN-Map-2-points-Update.jpg
128 ms
collect
123 ms
arrow--green.svg
138 ms
arrow--white.svg
140 ms
1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvaorCIPrQVIT9d4cw.ttf
36 ms
1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvoorCIPrQVIT9d4cw.ttf
65 ms
1Ptxg8zYS_SKggPN4iEgvnHyvveLxVuEorCIPrQVIT9d4cw.ttf
131 ms
1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpbCIPrQVIT9d4cw.ttf
133 ms
1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pbCIPrQVIT9d4cw.ttf
132 ms
fa-light-300.woff
192 ms
fa-regular-400.woff
276 ms
fa-solid-900.woff
273 ms
fa-brands-400.woff
268 ms
wp-emoji-release.min.js
56 ms
54 ms
iszn.ch 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Links do not have a discernible name
iszn.ch 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
Page has valid source maps
iszn.ch SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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 Iszn.ch 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 Iszn.ch 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.
iszn.ch
Open Graph data is detected on the main page of ISZN. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: