Tools & Wizards About Us
cdl.ch screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

cdl.ch

Collège du Léman | CDL | Nord Anglia Education

Page Load Speed

7.1 sec in total

First Response

179 ms

Resources Loaded

5.4 sec

Page Rendered

1.5 sec

cdl.ch screenshot

About Website

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

Welcome to Collège du Léman, one of the finest international schools in Switzerland and part of the Nord Anglia family of schools.

Visit cdl.ch

Key Findings

We analyzed Cdl.ch page load time and found that the first response time was 179 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

cdl.ch performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value12.2 s

3/100

10%

TBT (Total Blocking Time)

Value5,450 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value28.2 s

0/100

10%

Network Requests Diagram

cdl.ch

179 ms

12 ms

180 ms

cdl

1545 ms

schools.less

229 ms

Our browser made a total of 150 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Cdl.ch, 63% (94 requests) were made to Nordangliaeducation.com and 13% (20 requests) were made to Img.nordangliaeducation.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Img.nordangliaeducation.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 170.0 kB (17%)

Content Size

988.8 kB

After Optimization

818.8 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Cdl.ch main page is 988.8 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. 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 619.4 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 111.3 kB

  • Original 174.3 kB
  • After minification 148.6 kB
  • After compression 63.0 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 25.7 kB, which is 15% 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 111.3 kB or 64% of the original size.

Image Optimization

-5%

Potential reduce by 32.7 kB

  • Original 619.4 kB
  • After minification 586.7 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. CDL images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 26.0 kB

  • Original 195.1 kB
  • After minification 193.0 kB
  • After compression 169.1 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 26.0 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 78 (56%)

Requests Now

140

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 140 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CDL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 64 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cdl.ch

cdl.ch

179 ms

12 ms

180 ms

cdl

cdl

1545 ms

schools.less

schools.less

229 ms

homepage-subbranded-media-consolidated.less

homepage-subbranded-media-consolidated.less

245 ms

SubBrandingLeman.less

SubBrandingLeman.less

162 ms

plugin__jquery.js

plugin__jquery.js

302 ms

gotham-bold

gotham-bold

53 ms

require.config.js

require.config.js

381 ms

plugin__require.js

plugin__require.js

376 ms

gotham-book

gotham-book

51 ms

j.php

j.php

322 ms

68207-cropped-w300-h300-of-1-FFFFFF-meganav_ourschool_1200x1200_06.jpg

68207-cropped-w300-h300-of-1-FFFFFF-meganav_ourschool_1200x1200_06.jpg

914 ms

68639-cropped-w300-h300-of-1-FFFFFF-meganav_students_1200x1200_06.jpg

68639-cropped-w300-h300-of-1-FFFFFF-meganav_students_1200x1200_06.jpg

938 ms

68713-cropped-w300-h300-of-1-FFFFFF-meganav_ourstaff_1200x1200_06.jpg

68713-cropped-w300-h300-of-1-FFFFFF-meganav_ourstaff_1200x1200_06.jpg

1214 ms

68663-cropped-w300-h300-of-1-FFFFFF-meganav_learning_1200x1200_06.jpg

68663-cropped-w300-h300-of-1-FFFFFF-meganav_learning_1200x1200_06.jpg

1245 ms

68208-cropped-w300-h300-of-1-FFFFFF-meganav_camps_1200x1200_06.jpg

68208-cropped-w300-h300-of-1-FFFFFF-meganav_camps_1200x1200_06.jpg

1213 ms

69026-cropped-w300-h300-of-1-FFFFFF-boading1.jpeg

69026-cropped-w300-h300-of-1-FFFFFF-boading1.jpeg

939 ms

68921-cropped-w300-h300-of-1-FFFFFF-made-for-families.jpg

68921-cropped-w300-h300-of-1-FFFFFF-made-for-families.jpg

1248 ms

68640-cropped-w300-h300-of-1-FFFFFF-meganav_news-and-events_1200x1200_06.jpg

68640-cropped-w300-h300-of-1-FFFFFF-meganav_news-and-events_1200x1200_06.jpg

1251 ms

68784-cropped-w300-h300-of-1-FFFFFF-meganav_contacts_1200x1200_06.jpg

68784-cropped-w300-h300-of-1-FFFFFF-meganav_contacts_1200x1200_06.jpg

1248 ms

17725-bounded-w100-h80-of-1-FFFFFF-ib-world-school-logo-2-colour.png

17725-bounded-w100-h80-of-1-FFFFFF-ib-world-school-logo-2-colour.png

1252 ms

49514-bounded-w100-h80-of-1-FFFFFF-usa.jpg

49514-bounded-w100-h80-of-1-FFFFFF-usa.jpg

1287 ms

49515-bounded-w100-h80-of-1-FFFFFF-france.jpg

49515-bounded-w100-h80-of-1-FFFFFF-france.jpg

1250 ms

49516-bounded-w100-h80-of-1-FFFFFF-swiss-flag.png

49516-bounded-w100-h80-of-1-FFFFFF-swiss-flag.png

1321 ms

49517-bounded-w100-h80-of-1-FFFFFF-cambridge-igcse-logo-60x60--css-image.png

49517-bounded-w100-h80-of-1-FFFFFF-cambridge-igcse-logo-60x60--css-image.png

1288 ms

19420-bounded-w100-h80-of-1-FFFFFF-cis-logo-copy.png

19420-bounded-w100-h80-of-1-FFFFFF-cis-logo-copy.png

1316 ms

19418-bounded-w100-h80-of-1-FFFFFF-neasc-logo-accred-red.png

19418-bounded-w100-h80-of-1-FFFFFF-neasc-logo-accred-red.png

1319 ms

77851-bounded-w100-h80-of-1-FFFFFF-gesbf.png

77851-bounded-w100-h80-of-1-FFFFFF-gesbf.png

1782 ms

15183-bounded-w100-h80-of-1-FFFFFF-agepjpg.png

15183-bounded-w100-h80-of-1-FFFFFF-agepjpg.png

1346 ms

77850-bounded-w100-h80-of-1-FFFFFF-aliance-francaise-logo-2022.png

77850-bounded-w100-h80-of-1-FFFFFF-aliance-francaise-logo-2022.png

1765 ms

15181-bounded-w100-h80-of-1-FFFFFF-swisslearning-cmjn.png

15181-bounded-w100-h80-of-1-FFFFFF-swisslearning-cmjn.png

1781 ms

desktop.svg

desktop.svg

652 ms

mobile.svg

mobile.svg

654 ms

crown_white.svg

crown_white.svg

739 ms

crown.svg

crown.svg

741 ms

NAE-black-crown.png

NAE-black-crown.png

743 ms

gtm.js

gtm.js

845 ms

header-cta-icon-sprite.png

header-cta-icon-sprite.png

485 ms

header-icon-sprite.png

header-icon-sprite.png

636 ms

icon-phone-admissions.svg

icon-phone-admissions.svg

675 ms

navDivot.png

navDivot.png

636 ms

cta-tab-sprite.png

cta-tab-sprite.png

637 ms

icon_videoplayer.png

icon_videoplayer.png

638 ms

page-tear-sprite.png

page-tear-sprite.png

639 ms

globe.png

globe.png

953 ms

students.png

students.png

680 ms

dayBoarding.png

dayBoarding.png

983 ms

age-range.png

age-range.png

951 ms

facilities-icon-sprite.png

facilities-icon-sprite.png

953 ms

student-teacher-ratio-swapped.png

student-teacher-ratio-swapped.png

985 ms

class.png

class.png

984 ms

homeCTAIcons.png

homeCTAIcons.png

984 ms

quote-paint-smear-bg.png

quote-paint-smear-bg.png

985 ms

quotation-mark-sprite.png

quotation-mark-sprite.png

988 ms

home-icon-sprite.png

home-icon-sprite.png

1028 ms

fact-panel-play-icon-white.png

fact-panel-play-icon-white.png

1520 ms

fact-panel-award-icon.png

fact-panel-award-icon.png

989 ms

fact-panel-global-campus-icon.png

fact-panel-global-campus-icon.png

991 ms

juilliardLogo-2016.png

juilliardLogo-2016.png

991 ms

illustration-bg.png

illustration-bg.png

1028 ms

map-panel-tear-horizontal.png

map-panel-tear-horizontal.png

1520 ms

map-panel-tear-vertical.png

map-panel-tear-vertical.png

1059 ms

external_link.png

external_link.png

1059 ms

form-illustration-bg.png

form-illustration-bg.png

1517 ms

v.gif

v.gif

275 ms

tag-19516b2468fb92dae59a3c6e4c74d679.js

tag-19516b2468fb92dae59a3c6e4c74d679.js

115 ms

source-sans-pro-reg--vi.woff

source-sans-pro-reg--vi.woff

654 ms

source-sans-pro-reg.woff

source-sans-pro-reg.woff

655 ms

source-sans-pro-light--vi.woff

source-sans-pro-light--vi.woff

655 ms

source-sans-pro-light.woff

source-sans-pro-light.woff

656 ms

source-sans-pro-bold--vi.woff

source-sans-pro-bold--vi.woff

657 ms

source-sans-pro-bold.woff

source-sans-pro-bold.woff

657 ms

Montserrat-Bold.svg

Montserrat-Bold.svg

1183 ms

Montserrat-Bold.svg

Montserrat-Bold.svg

1042 ms

Montserrat-Regular.svg

Montserrat-Regular.svg

1474 ms

Montserrat-Regular.svg

Montserrat-Regular.svg

1035 ms

videoHomepage.js

videoHomepage.js

891 ms

footer-tear-border.png

footer-tear-border.png

890 ms

footer-social-icon-sprite_v2.png

footer-social-icon-sprite_v2.png

892 ms

settings.js

settings.js

440 ms

optimize.js

optimize.js

506 ms

analytics.js

analytics.js

619 ms

0d4627bc-6dce-41d4-8e5a-b11c10f5482e.js

0d4627bc-6dce-41d4-8e5a-b11c10f5482e.js

741 ms

bat.js

bat.js

1044 ms

conversion_async.js

conversion_async.js

1158 ms

ytag.min.js

ytag.min.js

1001 ms

insight.min.js

insight.min.js

1021 ms

prum.min.js

prum.min.js

1020 ms

fbevents.js

fbevents.js

1019 ms

js

js

230 ms

visitor.js

visitor.js

1009 ms

js

js

457 ms

activityi;src=9793386;type=schoo000;cat=blnae0;ord=1;num=9930943145557;gtm=2wg9l0;auiddc=150866199.1664266410;u1=college_du_leman;u4=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl;u2=europe;~oref=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl

activityi;src=9793386;type=schoo000;cat=blnae0;ord=1;num=9930943145557;gtm=2wg9l0;auiddc=150866199.1664266410;u1=college_du_leman;u4=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl;u2=europe;~oref=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl

848 ms

plugin__require-domready.js

plugin__require-domready.js

537 ms

global.js

global.js

537 ms

navigation.js

navigation.js

535 ms

initHome.js

initHome.js

535 ms

heroVideoCarousel.js

heroVideoCarousel.js

535 ms

plugin__slick.js

plugin__slick.js

531 ms

collect

collect

324 ms

collect

collect

518 ms

collect

collect

518 ms

collect

collect

333 ms

cookieAcceptance.js

cookieAcceptance.js

199 ms

06-colorbox-video.js

06-colorbox-video.js

198 ms

10-stickyCtaButtons.js

10-stickyCtaButtons.js

198 ms

11-emergencyNotice.js

11-emergencyNotice.js

199 ms

12-formAssembly.js

12-formAssembly.js

198 ms

plugin__select2.js

plugin__select2.js

278 ms

home4.js

home4.js

267 ms

homepage.js

homepage.js

266 ms

detectautoplay.js

detectautoplay.js

266 ms

initMapScroll.js

initMapScroll.js

266 ms

02-keyboardNavigation.js

02-keyboardNavigation.js

233 ms

03-newsAndEvents.js

03-newsAndEvents.js

356 ms

browserDetection.js

browserDetection.js

355 ms

plugin__JQuery-lazy.js

plugin__JQuery-lazy.js

353 ms

01-jquery-libs.js

01-jquery-libs.js

383 ms

plugin__superslides.js

plugin__superslides.js

345 ms

plugin__flexslider.js

plugin__flexslider.js

347 ms

videoUtils.js

videoUtils.js

370 ms

utils.js

utils.js

374 ms

jQueryFullCalendar.js

jQueryFullCalendar.js

491 ms

cmsApi.js

cmsApi.js

376 ms

jsArticleCalendarFilter.js

jsArticleCalendarFilter.js

415 ms

tipTip.js

tipTip.js

477 ms

plugin__scrolldepth.js

plugin__scrolldepth.js

477 ms

5820166.js

5820166.js

120 ms

171637753574578

171637753574578

141 ms

src=9793386;type=schoo000;cat=blnae0;ord=1;num=9930943145557;gtm=2wg9l0;auiddc=150866199.1664266410;u1=college_du_leman;u4=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl;u2=europe;~oref=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl

src=9793386;type=schoo000;cat=blnae0;ord=1;num=9930943145557;gtm=2wg9l0;auiddc=150866199.1664266410;u1=college_du_leman;u4=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl;u2=europe;~oref=https%3A%2F%2Fwww.nordangliaeducation.com%2Four-schools%2Fswitzerland%2Fcdl

86 ms

195 ms

ga-audiences

ga-audiences

94 ms

5820166

5820166

180 ms

plugin__cookies.js

plugin__cookies.js

349 ms

plugin__colorbox.js

plugin__colorbox.js

339 ms

ga-audiences

ga-audiences

165 ms

visitor.php

visitor.php

136 ms

plugin__fitvids.js

plugin__fitvids.js

316 ms

clarity.js

clarity.js

22 ms

35 ms

01-meganav.js

01-meganav.js

191 ms

initVideo.js

initVideo.js

158 ms

07-dataLayerEvents.js

07-dataLayerEvents.js

103 ms

plugin__moment.js

plugin__moment.js

148 ms

grey_85.png

grey_85.png

99 ms

plugin__jqactual.js

plugin__jqactual.js

145 ms

articleCalendar.js

articleCalendar.js

87 ms

18 ms

Accessibility Review

cdl.ch accessibility score

93

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-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Links do not have a discernible name

Best Practices

cdl.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

cdl.ch SEO score

92

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

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

    EN

  • Encoding

    UTF-8

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

cdl.ch

Open Graph data is detected on the main page of CDL. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: