Report Summary

  • 4

    Performance

    Renders faster than
    20% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

icsz.ch

International School, Switzerland - Private IB World School: ICS Zurich

Page Load Speed

2 sec in total

First Response

223 ms

Resources Loaded

1.6 sec

Page Rendered

185 ms

icsz.ch screenshot

About Website

Welcome to icsz.ch homepage info - get ready to check ICS Z best content for Switzerland right away, or after learning these important things about icsz.ch

Discover The Inter-Community School Zurich. ICS is a renowned international school in Zurich, Switzerland. As an IB school, ICS offers personalised education in English for Preschool & Kindergarten th...

Visit icsz.ch

Key Findings

We analyzed Icsz.ch page load time and found that the first response time was 223 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 35% of websites can load faster.

Performance Metrics

icsz.ch performance score

4

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value2,560 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.61

10/100

15%

TTI (Time to Interactive)

Value23.7 s

1/100

10%

Network Requests Diagram

icsz.ch

223 ms

www.icsz.ch

270 ms

styles.cfm

68 ms

ss.css

150 ms

jquery.min.js

197 ms

Our browser made a total of 112 requests to load all elements on the main page. We found that 49% of them (55 requests) were addressed to the original Icsz.ch, 20% (22 requests) were made to Newjs.finalsite.com and 12% (13 requests) were made to Newcss.finalsite.com. The less responsive or slowest element that took the longest time to load (355 ms) belongs to the original domain Icsz.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (60%)

Content Size

1.9 MB

After Optimization

763.3 kB

In fact, the total size of Icsz.ch main page is 1.9 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. 65% of websites need less resources to load. Javascripts take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 44.8 kB

  • Original 57.5 kB
  • After minification 53.2 kB
  • After compression 12.7 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 44.8 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 13.3 kB

  • Original 265.9 kB
  • After minification 252.6 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. ICS Z images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 945.0 kB

  • Original 1.4 MB
  • After minification 1.3 MB
  • After compression 462.7 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 945.0 kB or 67% of the original size.

CSS Optimization

-81%

Potential reduce by 147.1 kB

  • Original 182.4 kB
  • After minification 139.3 kB
  • After compression 35.2 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. Icsz.ch needs all CSS files to be minified and compressed as it can save up to 147.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 69 (66%)

Requests Now

105

After Optimization

36

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ICS Z. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and from 28 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

icsz.ch accessibility score

85

Accessibility Issues

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

High

ARIA input fields do not have accessible names

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

High

Buttons do not have an accessible name

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

icsz.ch best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

icsz.ch SEO score

83

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Icsz.ch can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Icsz.ch 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.

Social Sharing Optimization

Open Graph description is not detected on the main page of ICS Z. 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: