Tools & Wizards About Us
isb.ac.th screenshot

Report Summary

  • 2

    Performance

    Renders faster than
    20% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

isb.ac.th

International School Bangkok | Early Childhood - High School

Page Load Speed

6.8 sec in total

First Response

288 ms

Resources Loaded

5.3 sec

Page Rendered

1.2 sec

isb.ac.th screenshot

About Website

Visit isb.ac.th now to see the best up-to-date Isb content for Thailand and also check out these interesting facts you probably never knew about isb.ac.th

Home - International School BangkokThe International School Bangkok (ISB) is a private non-profit PK-12 international school. Providing quality education to Bangkok expatriates since 1951.

Visit isb.ac.th

Key Findings

We analyzed Isb.ac.th page load time and found that the first response time was 288 ms and then it took 6.5 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

isb.ac.th performance score

2

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value21.9 s

0/100

25%

SI (Speed Index)

Value18.3 s

0/100

10%

TBT (Total Blocking Time)

Value4,930 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.779

5/100

15%

TTI (Time to Interactive)

Value34.1 s

0/100

10%

Network Requests Diagram

isb.ac.th

288 ms

www.isb.ac.th

323 ms

gtm.js

110 ms

gtm.js

149 ms

application-64ed16b1c93340e7053499251282dfc43d3b3882105392bb4729fc427b533ffd.css

238 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 45% of them (30 requests) were addressed to the original Isb.ac.th, 14% (9 requests) were made to Weatherwidget.io and 9% (6 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Display.airgradient.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 151.3 kB (7%)

Content Size

2.3 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isb.ac.th main page is 2.3 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 86.8 kB

  • Original 104.2 kB
  • After minification 101.6 kB
  • After compression 17.4 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 86.8 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 64.3 kB

  • Original 1.1 MB
  • After minification 1.0 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

-0%

Potential reduce by 160 B

  • Original 997.6 kB
  • After minification 997.6 kB
  • After compression 997.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 123 B

  • Original 134.3 kB
  • After minification 134.3 kB
  • After compression 134.2 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. Isb.ac.th has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 28 (51%)

Requests Now

55

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 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 23 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

isb.ac.th

isb.ac.th

288 ms

www.isb.ac.th

www.isb.ac.th

323 ms

gtm.js

gtm.js

110 ms

gtm.js

gtm.js

149 ms

application-64ed16b1c93340e7053499251282dfc43d3b3882105392bb4729fc427b533ffd.css

application-64ed16b1c93340e7053499251282dfc43d3b3882105392bb4729fc427b533ffd.css

238 ms

styles.cfm

styles.cfm

434 ms

main.css

main.css

80 ms

in_layout_head2-b5f3f7bb27b030c8a055a13df1d1b8478510f6b58a77eae357fe92b1bc6df1b6.js

in_layout_head2-b5f3f7bb27b030c8a055a13df1d1b8478510f6b58a77eae357fe92b1bc6df1b6.js

784 ms

uc.js

uc.js

61 ms

weglot.min.js

weglot.min.js

71 ms

css2

css2

71 ms

gsap.min.js

gsap.min.js

60 ms

ScrollTrigger.min.js

ScrollTrigger.min.js

72 ms

ScrollToPlugin.min.js

ScrollToPlugin.min.js

77 ms

application-7747e0bf20cc797e0cd3539fc5aca07cfc5ee6872f1ba4bc70ca595f2876e167.js

application-7747e0bf20cc797e0cd3539fc5aca07cfc5ee6872f1ba4bc70ca595f2876e167.js

436 ms

main.js

main.js

66 ms

vedd3670a3b1c4e178fdfb0cc912d969e1713874337387

vedd3670a3b1c4e178fdfb0cc912d969e1713874337387

104 ms

analytics.js

analytics.js

62 ms

js

js

60 ms

hotjar-3331799.js

hotjar-3331799.js

209 ms

linkid.js

linkid.js

19 ms

modules.1a30a0a67c3c23c13060.js

modules.1a30a0a67c3c23c13060.js

21 ms

nav-thumb-bg-example.jpg

nav-thumb-bg-example.jpg

117 ms

menu-clouds.png

menu-clouds.png

118 ms

menu-skyline-layer1.svg

menu-skyline-layer1.svg

118 ms

menu-skyline-layer2.svg

menu-skyline-layer2.svg

124 ms

menu-skyline-layer3.svg

menu-skyline-layer3.svg

114 ms

logo.svg

logo.svg

111 ms

wave-top-new.svg

wave-top-new.svg

147 ms

wave-new.svg

wave-new.svg

151 ms

panther-new.svg

panther-new.svg

152 ms

curve-new.svg

curve-new.svg

148 ms

skyline1-clouds.png

skyline1-clouds.png

150 ms

skyline1-layer1.svg

skyline1-layer1.svg

155 ms

skyline1-layer2.svg

skyline1-layer2.svg

159 ms

skyline1-layer3.svg

skyline1-layer3.svg

153 ms

skyline2-clouds.png

skyline2-clouds.png

163 ms

skyline2-layer1.svg

skyline2-layer1.svg

157 ms

skyline2-layer2.svg

skyline2-layer2.svg

167 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4nY1M2xYkS.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4nY1M2xYkS.ttf

226 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4nY1M2xYkS.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4nY1M2xYkS.ttf

439 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4nY1M2xYkS.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4nY1M2xYkS.ttf

438 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4nY1M2xYkS.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4nY1M2xYkS.ttf

439 ms

icomoon.woff

icomoon.woff

439 ms

icomoon-cd6b5172ffdfd7ab60bb4063e89e719cab35a9393a289e0c55a7acaaf20214cc.woff

icomoon-cd6b5172ffdfd7ab60bb4063e89e719cab35a9393a289e0c55a7acaaf20214cc.woff

641 ms

bpa-icon-library.woff

bpa-icon-library.woff

437 ms

widget.min.js

widget.min.js

486 ms

gMQYdlPYGj

gMQYdlPYGj

1576 ms

poweredby-7fe9cdfc8db6c2419477639e585e15f5fceee483b4a26452877dabab357cb391.svg

poweredby-7fe9cdfc8db6c2419477639e585e15f5fceee483b4a26452877dabab357cb391.svg

417 ms

main.js

main.js

58 ms

16 ms

if_w.css

if_w.css

12 ms

angular-1.5.8.min.js

angular-1.5.8.min.js

46 ms

iApp.min.js

iApp.min.js

59 ms

open.svg

open.svg

18 ms

86 ms

css

css

18 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVcUwaEQXjM.ttf

15 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVcUwaEQXjM.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVcUwaEQXjM.ttf

15 ms

cloudy.html

cloudy.html

10 ms

rain.html

rain.html

17 ms

partly-cloudy-day.html

partly-cloudy-day.html

15 ms

styles.efebbbace9d95060b738.css

styles.efebbbace9d95060b738.css

245 ms

runtime.5ea7e86a1db6f7ca27f2.js

runtime.5ea7e86a1db6f7ca27f2.js

485 ms

polyfills.a4021de53358bb0fec14.js

polyfills.a4021de53358bb0fec14.js

710 ms

main.27877ef7170dae2d5046.js

main.27877ef7170dae2d5046.js

1965 ms

Accessibility Review

isb.ac.th accessibility score

75

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 match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

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

High

[aria-*] attributes do not have valid values

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

<frame> or <iframe> elements do not have a title

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

isb.ac.th best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

isb.ac.th SEO score

86

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

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 Isb.ac.th 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 Isb.ac.th 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

isb.ac.th

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