Tools & Wizards About Us
isb.be screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

isb.be

International School of Brussels | Early Years (EY) - IB Diploma

Page Load Speed

4.1 sec in total

First Response

923 ms

Resources Loaded

2.8 sec

Page Rendered

377 ms

isb.be screenshot

About Website

Click here to check amazing Isb content for United States. Otherwise, check out these important facts you probably never knew about isb.be

The International School of Brussels offers an English-language international education in Belgium to over 1350 students through Preschool to12 IB Diploma program.

Visit isb.be

Key Findings

We analyzed Isb.be page load time and found that the first response time was 923 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

isb.be performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value14.5 s

0/100

25%

SI (Speed Index)

Value21.0 s

0/100

10%

TBT (Total Blocking Time)

Value21,550 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.266

46/100

15%

TTI (Time to Interactive)

Value31.5 s

0/100

10%

Network Requests Diagram

isb.be

923 ms

www.isb.be

545 ms

styles.cfm

69 ms

ss.css

10 ms

jquery.min.js

20 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 33% of them (32 requests) were addressed to the original Isb.be, 16% (16 requests) were made to Ssl.google-analytics.com and 12% (12 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (923 ms) belongs to the original domain Isb.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 962.3 kB (27%)

Content Size

3.5 MB

After Optimization

2.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isb.be main page is 3.5 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. 80% 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 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 47.6 kB

  • Original 58.3 kB
  • After minification 53.4 kB
  • After compression 10.7 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 47.6 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 81.9 kB

  • Original 2.3 MB
  • After minification 2.3 MB

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. Isb images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 595.7 kB

  • Original 850.0 kB
  • After minification 803.0 kB
  • After compression 254.2 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 595.7 kB or 70% of the original size.

CSS Optimization

-87%

Potential reduce by 237.0 kB

  • Original 272.8 kB
  • After minification 230.4 kB
  • After compression 35.8 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. Isb.be needs all CSS files to be minified and compressed as it can save up to 237.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 44 (52%)

Requests Now

84

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

isb.be

isb.be

923 ms

www.isb.be

www.isb.be

545 ms

styles.cfm

styles.cfm

69 ms

ss.css

ss.css

10 ms

jquery.min.js

jquery.min.js

20 ms

fs_global.js

fs_global.js

13 ms

jquery.fsBreakly.js

jquery.fsBreakly.js

13 ms

blog.js

blog.js

14 ms

news.css

news.css

9 ms

jquery.ui.1.8rc3.css

jquery.ui.1.8rc3.css

14 ms

main.css

main.css

156 ms

modernizr.custom.78979.js

modernizr.custom.78979.js

83 ms

plugins.js

plugins.js

145 ms

global_config.js

global_config.js

83 ms

global_vars.js

global_vars.js

82 ms

ldg7juy.js

ldg7juy.js

204 ms

support.custom.css

support.custom.css

109 ms

jquery.ui.min.js

jquery.ui.min.js

9 ms

flash_headers.js

flash_headers.js

46 ms

ga.js

ga.js

64 ms

__utm.gif

__utm.gif

11 ms

1b

1b

250 ms

widgets.js

widgets.js

51 ms

logo_new-2.png

logo_new-2.png

51 ms

2105.full.jpg

2105.full.jpg

302 ms

portal-null.png

portal-null.png

53 ms

search-null.png

search-null.png

52 ms

menu-null.png

menu-null.png

50 ms

learning_over.png

learning_over.png

287 ms

leading_over.png

leading_over.png

286 ms

community_over.png

community_over.png

286 ms

campus_over.png

campus_over.png

289 ms

join_us_arrow.png

join_us_arrow.png

288 ms

Innovation_adjusted_banner_hp.jpg

Innovation_adjusted_banner_hp.jpg

300 ms

ISBN-banner-1500x800px_v2.png

ISBN-banner-1500x800px_v2.png

297 ms

footer-logo-cis.png

footer-logo-cis.png

291 ms

footer-logo-msa.png

footer-logo-msa.png

291 ms

footer-logo-ib.png

footer-logo-ib.png

291 ms

footer-logo-cgc.png

footer-logo-cgc.png

293 ms

footer-logo-nfi.png

footer-logo-nfi.png

294 ms

2115.full.jpg

2115.full.jpg

285 ms

2113.full.jpg

2113.full.jpg

296 ms

2110.full.jpg

2110.full.jpg

284 ms

2109.full.jpg

2109.full.jpg

287 ms

2108.full.jpg

2108.full.jpg

291 ms

2107.full.jpg

2107.full.jpg

292 ms

2102.full.jpg

2102.full.jpg

292 ms

2096.full.jpg

2096.full.jpg

289 ms

poweredBy.svg

poweredBy.svg

23 ms

FMeV2N2ZAvL_t7S6tsxR2tw-p9tkBKtiDfrvUyTFdFIff4HMgsMWeMI6MK6g5Msfb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

FMeV2N2ZAvL_t7S6tsxR2tw-p9tkBKtiDfrvUyTFdFIff4HMgsMWeMI6MK6g5Msfb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

263 ms

FQrcFMy52sdC--4bh_kLqs7Xn5RL1dfIZ_9Md2GuE7CffJpMgsMWeMI6MK6g5Mifb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

FQrcFMy52sdC--4bh_kLqs7Xn5RL1dfIZ_9Md2GuE7CffJpMgsMWeMI6MK6g5Mifb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

269 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

270 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

224 ms

ui-icons_222222_256x240.png

ui-icons_222222_256x240.png

208 ms

page.cfm

page.cfm

163 ms

125139701

125139701

250 ms

125139700

125139700

107 ms

125139702

125139702

98 ms

125139703

125139703

85 ms

145626969

145626969

109 ms

125142109

125142109

159 ms

125142108

125142108

120 ms

126351713

126351713

111 ms

126494126

126494126

113 ms

wide-join-us.jpg

wide-join-us.jpg

349 ms

wide-banner-test2.jpg

wide-banner-test2.jpg

246 ms

wide-banner-innovative.jpg

wide-banner-innovative.jpg

248 ms

wide-banner-grad.jpg

wide-banner-grad.jpg

247 ms

atpBdO6WcMykVPY3eiOt-pyV0xIYgU4dfPZPVZYNM9tffJhMgsMWeMI6MK6g5Mofb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

atpBdO6WcMykVPY3eiOt-pyV0xIYgU4dfPZPVZYNM9tffJhMgsMWeMI6MK6g5Mofb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

67 ms

WoGGCKNpv9YBTGcclTN51IbJhEqDi6lwwQ4Zktam67GffJKMgsMWeMI6MK6g5gBfb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

WoGGCKNpv9YBTGcclTN51IbJhEqDi6lwwQ4Zktam67GffJKMgsMWeMI6MK6g5gBfb2iRZeFKF2sKZQsyFhsK526aFhZcjQmRw2M3FhJtZebtFRmKwh4KjDwtwD6DwAZ8wcmywQSaZRjkwR9ajQqU5QI.eot

64 ms

np6SaNbKCgWASP5Fvqc8KwiDestDrpHNA-c0aV0L1mtffJrMgsMWeMI6MK6g5MX.eot

np6SaNbKCgWASP5Fvqc8KwiDestDrpHNA-c0aV0L1mtffJrMgsMWeMI6MK6g5MX.eot

182 ms

NwY_8I76P1_8Go_GL0r-FR-Qd5NTa46l3yrSJBvz6Z6ffJhMgsMWeMI6MK6g5Mt.eot

NwY_8I76P1_8Go_GL0r-FR-Qd5NTa46l3yrSJBvz6Z6ffJhMgsMWeMI6MK6g5Mt.eot

182 ms

EX3aFAOtQZk3SqCDu0SYfZLXXlMuMcsVI91PZC25RLMffJKMgsMWeMI6MK6g5gI.eot

EX3aFAOtQZk3SqCDu0SYfZLXXlMuMcsVI91PZC25RLMffJKMgsMWeMI6MK6g5gI.eot

238 ms

AAS5KXG-LCd0sDHRtZHDuLtOQ2kt6765Aeoy_04YIuCffJEMgsMWeMI6MK6g5Mw.eot

AAS5KXG-LCd0sDHRtZHDuLtOQ2kt6765Aeoy_04YIuCffJEMgsMWeMI6MK6g5Mw.eot

412 ms

DbsZwlMFaQTVYchIacB0nNpJ5TFGQghA8nTLWyks38bff4HMgsMWeMI6MK6g5Mb.eot

DbsZwlMFaQTVYchIacB0nNpJ5TFGQghA8nTLWyks38bff4HMgsMWeMI6MK6g5Mb.eot

235 ms

TlhAHXx5jSE7V5O3YKYYcnNlJfmu6MxeUI_kDdxbb5IffJpMgsMWeMI6MK6g5MS.eot

TlhAHXx5jSE7V5O3YKYYcnNlJfmu6MxeUI_kDdxbb5IffJpMgsMWeMI6MK6g5MS.eot

234 ms

p.gif

p.gif

330 ms

player.js

player.js

326 ms

player.css

player.css

295 ms

ga.js

ga.js

102 ms

vuid.min.js

vuid.min.js

327 ms

__utm.gif

__utm.gif

102 ms

__utm.gif

__utm.gif

157 ms

__utm.gif

__utm.gif

158 ms

__utm.gif

__utm.gif

159 ms

__utm.gif

__utm.gif

160 ms

__utm.gif

__utm.gif

161 ms

__utm.gif

__utm.gif

106 ms

__utm.gif

__utm.gif

104 ms

__utm.gif

__utm.gif

109 ms

__utm.gif

__utm.gif

109 ms

__utm.gif

__utm.gif

39 ms

__utm.gif

__utm.gif

41 ms

__utm.gif

__utm.gif

40 ms

__utm.gif

__utm.gif

107 ms

__utm.gif

__utm.gif

106 ms

proxy.html

proxy.html

31 ms

Accessibility Review

isb.be 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-*] attributes do not have valid values

Best Practices

isb.be 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

isb.be SEO score

90

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

    N/A

  • Encoding

    ISO-8859-1

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

isb.be

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