Tools & Wizards About Us
isr.ch screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

isr.ch

ISR International School Rheintal - ISR International School Rheintal

Page Load Speed

1.1 sec in total

First Response

205 ms

Resources Loaded

705 ms

Page Rendered

162 ms

isr.ch screenshot

About Website

Visit isr.ch now to see the best up-to-date ISR content and also check out these interesting facts you probably never knew about isr.ch

ISR is a leading international day school offering a high quality education in English. An IB World and CIS fully accredited school for students from Pre-School to Grade 12.

Visit isr.ch

Key Findings

We analyzed Isr.ch page load time and found that the first response time was 205 ms and then it took 867 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

isr.ch performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value7.8 s

24/100

10%

TBT (Total Blocking Time)

Value1,030 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.083

94/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

isr.ch

205 ms

www.isr.ch

472 ms

38C7OddoX8O2C+4wMwq5Q3VT93emPY7AAAA

4 ms

4LA8ERCiR4FRDwQ600vepy3mTzeybH5r99xAM5AQAAAA==

4 ms

fb6Ri4UJmlVBTn3JQjMpsIwRSnxpOfbsr3vo4JvMgYjSNmnf17WvePyvz9AcAAAA=

3 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that 29% of them (2 requests) were addressed to the original Isr.ch, 71% (5 requests) were made to . The less responsive or slowest element that took the longest time to load (472 ms) belongs to the original domain Isr.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 413.9 kB (47%)

Content Size

881.3 kB

After Optimization

467.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isr.ch main page is 881.3 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 319.2 kB which makes up the majority of the site volume.

HTML Optimization

-38%

Potential reduce by 63.1 kB

  • Original 165.1 kB
  • After minification 165.0 kB
  • After compression 102.0 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. 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 63.1 kB or 38% of the original size.

Image Optimization

-11%

Potential reduce by 25.6 kB

  • Original 236.4 kB
  • After minification 210.8 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, ISR needs image optimization as it can save up to 25.6 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-59%

Potential reduce by 188.6 kB

  • Original 319.2 kB
  • After minification 315.2 kB
  • After compression 130.6 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 188.6 kB or 59% of the original size.

CSS Optimization

-85%

Potential reduce by 136.5 kB

  • Original 160.6 kB
  • After minification 151.6 kB
  • After compression 24.1 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. Isr.ch needs all CSS files to be minified and compressed as it can save up to 136.5 kB or 85% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

isr.ch

isr.ch

205 ms

www.isr.ch

www.isr.ch

472 ms

38C7OddoX8O2C+4wMwq5Q3VT93emPY7AAAA

38C7OddoX8O2C+4wMwq5Q3VT93emPY7AAAA

4 ms

4LA8ERCiR4FRDwQ600vepy3mTzeybH5r99xAM5AQAAAA==

4LA8ERCiR4FRDwQ600vepy3mTzeybH5r99xAM5AQAAAA==

4 ms

fb6Ri4UJmlVBTn3JQjMpsIwRSnxpOfbsr3vo4JvMgYjSNmnf17WvePyvz9AcAAAA=

fb6Ri4UJmlVBTn3JQjMpsIwRSnxpOfbsr3vo4JvMgYjSNmnf17WvePyvz9AcAAAA=

3 ms

chIK2uBTxmat7oQ+qqmbzZM4WWYo2Ef31jP8FpYO9BgAAAA==

chIK2uBTxmat7oQ+qqmbzZM4WWYo2Ef31jP8FpYO9BgAAAA==

3 ms

bj4d84rc2e3tmeZeWqOAAA

bj4d84rc2e3tmeZeWqOAAA

2 ms

Accessibility Review

isr.ch accessibility score

76

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

isr.ch best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

isr.ch SEO score

79

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

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

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Isr.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 Isr.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.

Social Sharing Optimization

isr.ch

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