Tools & Wizards About Us
sisschools.org screenshot

Report Summary

  • 3

    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

  • 84

    SEO

    Google-friendlier than
    52% of websites

sisschools.org

SIS Schools - International School Jakarta Indonesia

Page Load Speed

5.4 sec in total

First Response

54 ms

Resources Loaded

4.3 sec

Page Rendered

1.1 sec

sisschools.org screenshot

About Website

Welcome to sisschools.org homepage info - get ready to check SIS Schools best content for Indonesia right away, or after learning these important things about sisschools.org

SIS Group of Schools providing international schools in Indonesia for students in Jakarta, Cilegon, Medan, Palembang and Semarang.

Visit sisschools.org

Key Findings

We analyzed Sisschools.org page load time and found that the first response time was 54 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

sisschools.org performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value28.9 s

0/100

25%

SI (Speed Index)

Value36.9 s

0/100

10%

TBT (Total Blocking Time)

Value8,420 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.564

12/100

15%

TTI (Time to Interactive)

Value34.8 s

0/100

10%

Network Requests Diagram

sisschools.org

54 ms

sisschools.org

1039 ms

sbi-styles.min.css

25 ms

jquery-ui.css

33 ms

theme.css

35 ms

Our browser made a total of 237 requests to load all elements on the main page. We found that 92% of them (219 requests) were addressed to the original Sisschools.org, 1% (3 requests) were made to Googletagmanager.com and 1% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Sisschools.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 601.5 kB (11%)

Content Size

5.5 MB

After Optimization

4.9 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Sisschools.org main page is 5.5 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. Only a small number of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 368.1 kB

  • Original 432.1 kB
  • After minification 420.1 kB
  • After compression 64.1 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 368.1 kB or 85% of the original size.

Image Optimization

-5%

Potential reduce by 222.3 kB

  • Original 4.1 MB
  • After minification 3.9 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. SIS Schools images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 11.1 kB

  • Original 995.3 kB
  • After minification 994.1 kB
  • After compression 984.2 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 140 (62%)

Requests Now

225

After Optimization

85

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 225 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SIS Schools. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 95 to 1 for JavaScripts and from 47 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sisschools.org

sisschools.org

54 ms

sisschools.org

sisschools.org

1039 ms

sbi-styles.min.css

sbi-styles.min.css

25 ms

jquery-ui.css

jquery-ui.css

33 ms

theme.css

theme.css

35 ms

style.css

style.css

26 ms

rs6.css

rs6.css

26 ms

font-awesome.min.css

font-awesome.min.css

37 ms

magnific-popup.css

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36 ms

slick.css

slick.css

34 ms

iscwp-public.css

iscwp-public.css

45 ms

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close-button-icon.css

291 ms

YouTubePopUp.css

YouTubePopUp.css

299 ms

contact-form-7-email-spam-blocker-public.css

contact-form-7-email-spam-blocker-public.css

43 ms

styles.css

styles.css

46 ms

wpcf7-redirect-frontend.min.css

wpcf7-redirect-frontend.min.css

51 ms

style.css

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53 ms

modules.min.css

modules.min.css

74 ms

font-awesome.min.css

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65 ms

style.min.css

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62 ms

ionicons.min.css

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99 ms

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96 ms

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98 ms

simple-line-icons.css

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103 ms

mediaelementplayer-legacy.min.css

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104 ms

wp-mediaelement.min.css

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106 ms

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105 ms

modules-responsive.min.css

modules-responsive.min.css

108 ms

style_dynamic_responsive_ms_id_1.css

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106 ms

css

css

41 ms

font-awesome.min.css

font-awesome.min.css

42 ms

js_composer.min.css

js_composer.min.css

123 ms

style.css

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110 ms

tooltipster.bundle.min.css

tooltipster.bundle.min.css

111 ms

mo_forms_css.min.css

mo_forms_css.min.css

117 ms

font-awesome.min.css

font-awesome.min.css

142 ms

popupaoc-public.css

popupaoc-public.css

144 ms

ytprefs.min.css

ytprefs.min.css

146 ms

jquery-3.5.1.min.js

jquery-3.5.1.min.js

147 ms

jquery.cookie.js

jquery.cookie.js

130 ms

language-cookie.js

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128 ms

rbtools.min.js

rbtools.min.js

1108 ms

rs6.min.js

rs6.min.js

378 ms

YouTubePopUp.jquery.js

YouTubePopUp.jquery.js

446 ms

YouTubePopUp.js

YouTubePopUp.js

505 ms

contact-form-7-email-spam-blocker-public.js

contact-form-7-email-spam-blocker-public.js

283 ms

script.js

script.js

283 ms

script.min.js

script.min.js

284 ms

tooltipster.bundle.min.js

tooltipster.bundle.min.js

291 ms

ytprefs.min.js

ytprefs.min.js

297 ms

js

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76 ms

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121 ms

js

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138 ms

rbtools.min.js

rbtools.min.js

110 ms

rs6.min.js

rs6.min.js

128 ms

email-decode.min.js

email-decode.min.js

9 ms

css

css

17 ms

animate.min.css

animate.min.css

9 ms

slick-carousal.css

slick-carousal.css

11 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

11 ms

js_composer_tta.min.css

js_composer_tta.min.css

17 ms

cf7-send-wa-public.css

cf7-send-wa-public.css

22 ms

dashicons.min.css

dashicons.min.css

24 ms

jquery.modal.min.css

jquery.modal.min.css

19 ms

jquery-ui.min.css

jquery-ui.min.css

23 ms

jquery-ui-timepicker-addon.min.css

jquery-ui-timepicker-addon.min.css

26 ms

jquery-migrate-3.3.0.min.js

jquery-migrate-3.3.0.min.js

28 ms

script.js

script.js

28 ms

core.min.js

core.min.js

37 ms

datepicker.min.js

datepicker.min.js

35 ms

script.js

script.js

35 ms

page-scroll-to-id.min.js

page-scroll-to-id.min.js

40 ms

popupaoc-public.js

popupaoc-public.js

46 ms

index.js

index.js

43 ms

index.js

index.js

46 ms

wpcf7r-fe.js

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48 ms

widget.min.js

widget.min.js

55 ms

tabs.min.js

tabs.min.js

54 ms

accordion.min.js

accordion.min.js

53 ms

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65 ms

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55 ms

wp-mediaelement.min.js

wp-mediaelement.min.js

63 ms

hoverIntent.min.js

hoverIntent.min.js

60 ms

jquery.plugin.js

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63 ms

owl.carousel.min.js

owl.carousel.min.js

64 ms

jquery.waypoints.min.js

jquery.waypoints.min.js

68 ms

fluidvids.min.js

fluidvids.min.js

71 ms

jquery.prettyPhoto.min.js

jquery.prettyPhoto.min.js

74 ms

perfect-scrollbar.jquery.min.js

perfect-scrollbar.jquery.min.js

71 ms

parallax.min.js

parallax.min.js

73 ms

api.js

api.js

40 ms

jquery.waitforimages.js

jquery.waitforimages.js

75 ms

isotope.pkgd.min.js

isotope.pkgd.min.js

81 ms

packery-mode.pkgd.min.js

packery-mode.pkgd.min.js

78 ms

slick.min.js

slick.min.js

78 ms

form-e.js

form-e.js

82 ms

jquery.countdown.min.js

jquery.countdown.min.js

73 ms

counter.js

counter.js

75 ms

absoluteCounter.min.js

absoluteCounter.min.js

82 ms

jquery.fullPage.min.js

jquery.fullPage.min.js

75 ms

easypiechart.js

easypiechart.js

72 ms

TweenLite.min.js

TweenLite.min.js

82 ms

TimelineLite.min.js

TimelineLite.min.js

73 ms

CSSPlugin.min.js

CSSPlugin.min.js

71 ms

EasePack.min.js

EasePack.min.js

78 ms

modules.min.js

modules.min.js

75 ms

mocf7.min.js

mocf7.min.js

74 ms

new-tab.js

new-tab.js

74 ms

scripts.js

scripts.js

82 ms

wp-polyfill.min.js

wp-polyfill.min.js

77 ms

index.js

index.js

75 ms

fitvids.min.js

fitvids.min.js

76 ms

jquery-ui-timepicker-addon.min.js

jquery-ui-timepicker-addon.min.js

72 ms

mouse.min.js

mouse.min.js

75 ms

slider.min.js

slider.min.js

77 ms

button.min.js

button.min.js

79 ms

jquery-ui-sliderAccess.js

jquery-ui-sliderAccess.js

74 ms

scripts.js

scripts.js

73 ms

js_composer_front.min.js

js_composer_front.min.js

76 ms

vc-waypoints.min.js

vc-waypoints.min.js

74 ms

slick.js

slick.js

82 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

81 ms

custom-tm.js

custom-tm.js

74 ms

customPrettyPhoto.js

customPrettyPhoto.js

73 ms

vc-accordion.min.js

vc-accordion.min.js

78 ms

vc-tta-autoplay.min.js

vc-tta-autoplay.min.js

81 ms

vc-tabs.min.js

vc-tabs.min.js

76 ms

commonlib.js

commonlib.js

75 ms

underscore-before.js

underscore-before.js

74 ms

underscore.min.js

underscore.min.js

79 ms

underscore-after.js

underscore-after.js

77 ms

jquery.modal.min.js

jquery.modal.min.js

78 ms

fbevents.js

fbevents.js

152 ms

gosquared.js

gosquared.js

152 ms

sbi-sprite.png

sbi-sprite.png

313 ms

SIS-Logo-Fixed.png

SIS-Logo-Fixed.png

62 ms

SIS-Logo-Website.png

SIS-Logo-Website.png

95 ms

SIS-Hats-Off-2.jpg

SIS-Hats-Off-2.jpg

64 ms

SIS-Bandung-Open-Enrolment-2024.webp

SIS-Bandung-Open-Enrolment-2024.webp

63 ms

SIS-Surabaya-Home-2024.jpg

SIS-Surabaya-Home-2024.jpg

151 ms

SIS-Slider-UNSDG2.jpg

SIS-Slider-UNSDG2.jpg

150 ms

SIS-Great-Value.jpg

SIS-Great-Value.jpg

96 ms

SIS-25th-Y.jpg

SIS-25th-Y.jpg

95 ms

SIS-UNSDG-Video-New-1.jpg

SIS-UNSDG-Video-New-1.jpg

151 ms

event-4-1-550x550.jpg

event-4-1-550x550.jpg

148 ms

class_sisbonavista-550x550.jpg

class_sisbonavista-550x550.jpg

148 ms

student_lab_sisbonavista.jpg

student_lab_sisbonavista.jpg

152 ms

blog-img-2-550x550.jpg

blog-img-2-550x550.jpg

152 ms

SIS-Lounge-550x550.jpg

SIS-Lounge-550x550.jpg

219 ms

studentsport_sisbonavista.jpg

studentsport_sisbonavista.jpg

152 ms

course-single-img-550x550.jpg

course-single-img-550x550.jpg

219 ms

student_crowd.jpg

student_crowd.jpg

219 ms

masonry-gallery-11.jpg

masonry-gallery-11.jpg

219 ms

SIS-Social-IG-550x550.jpeg

SIS-Social-IG-550x550.jpeg

223 ms

SIS-Social-Twitter-550x550.jpeg

SIS-Social-Twitter-550x550.jpeg

220 ms

ps2-3-550x550.jpg

ps2-3-550x550.jpg

221 ms

SIS-schoolboy-using-lab-equipment.jpg

SIS-schoolboy-using-lab-equipment.jpg

221 ms

SIS-Apple-Tech.jpeg

SIS-Apple-Tech.jpeg

219 ms

SIS-expands-its-UNSDG-commitment.jpg

SIS-expands-its-UNSDG-commitment.jpg

225 ms

SIS-Alumni-Aisha.jpg

SIS-Alumni-Aisha.jpg

1188 ms

SIS-Alumni-Anita.jpg

SIS-Alumni-Anita.jpg

225 ms

SIS-Alumni-Cherie.jpg

SIS-Alumni-Cherie.jpg

223 ms

SIS-Alumni-Gabriella-1.jpg

SIS-Alumni-Gabriella-1.jpg

225 ms

Jovita-Kartika-Tedja.jpg

Jovita-Kartika-Tedja.jpg

226 ms

Teacher-Student-Profiles_0000s_0000_Suzuki-Bros.jpg

Teacher-Student-Profiles_0000s_0000_Suzuki-Bros.jpg

490 ms

SIS-VoiSIS-Yosi-Rosalina.jpg

SIS-VoiSIS-Yosi-Rosalina.jpg

1411 ms

Teacher-Student-Profiles_0000s_0001_Chalista.jpg

Teacher-Student-Profiles_0000s_0001_Chalista.jpg

490 ms

Audrey-Chuu.jpg

Audrey-Chuu.jpg

617 ms

Vania-Cheryl-2.jpg

Vania-Cheryl-2.jpg

1538 ms

Siti-Nur-Eryka.jpg

Siti-Nur-Eryka.jpg

843 ms

SIS-VoiSIS-Jerrick-Edmund.jpg

SIS-VoiSIS-Jerrick-Edmund.jpg

1221 ms

Naura-Rahma-Andhika-2.jpg

Naura-Rahma-Andhika-2.jpg

841 ms

insight.min.js

insight.min.js

157 ms

Grace-Wang.jpg

Grace-Wang.jpg

1522 ms

Neha-Bhardwaj.jpg

Neha-Bhardwaj.jpg

1006 ms

SIS-Alumni-Nikita.jpg

SIS-Alumni-Nikita.jpg

1360 ms

whatsapp.svg

whatsapp.svg

1043 ms

search-icon-mobile-2.png

search-icon-mobile-2.png

1057 ms

SIS-Bandung-Open-Enrolment-2024.webp

SIS-Bandung-Open-Enrolment-2024.webp

1057 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1297 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

67 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1391 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1790 ms

ElegantIcons.woff

ElegantIcons.woff

1524 ms

university

university

1683 ms

awards

awards

1532 ms

maps.html

maps.html

1782 ms

SIS-BonaVista-Footer.jpg

SIS-BonaVista-Footer.jpg

1313 ms

insight_tag_errors.gif

insight_tag_errors.gif

160 ms

pv

pv

92 ms

ionicons.ttf

ionicons.ttf

1482 ms

font

font

306 ms

font

font

412 ms

recaptcha__en.js

recaptcha__en.js

167 ms

SIS-Bandung-Open-Enrolment-2024.webp

SIS-Bandung-Open-Enrolment-2024.webp

396 ms

main.js

main.js

23 ms

269 ms

540 ms

style.css

style.css

12 ms

jquery.min.js

jquery.min.js

20 ms

jquery.rotate.js

jquery.rotate.js

13 ms

Top-in-the-Country-Hindi.png

Top-in-the-Country-Hindi.png

10 ms

Top-in-the-Country-General-Paper.png

Top-in-the-Country-General-Paper.png

34 ms

Top-in-the-Country-English-as-a-Second-Language.png

Top-in-the-Country-English-as-a-Second-Language.png

33 ms

Top-in-the-Country-Economics.png

Top-in-the-Country-Economics.png

36 ms

Top-in-the-Country-Computer-Science.png

Top-in-the-Country-Computer-Science.png

37 ms

Top-in-the-Country-Chinese-as-a-Second-Language.png

Top-in-the-Country-Chinese-as-a-Second-Language.png

41 ms

Top-in-the-Country-Physics.png

Top-in-the-Country-Physics.png

40 ms

Top-in-the-World-Extended-Mathematics.png

Top-in-the-World-Extended-Mathematics.png

41 ms

Top-in-the-World-Foreign-Language-Mandarin.png

Top-in-the-World-Foreign-Language-Mandarin.png

40 ms

Top-in-the-World-Additional-Math_-1.png

Top-in-the-World-Additional-Math_-1.png

40 ms

Top-in-the-Country-ICT_.png

Top-in-the-Country-ICT_.png

51 ms

Top-in-the-Country-Chemistry_.png

Top-in-the-Country-Chemistry_.png

50 ms

Top-in-the-Country-Business-Studies_.png

Top-in-the-Country-Business-Studies_.png

47 ms

Top-in-the-Country-Bahasa-Indonesia_.png

Top-in-the-Country-Bahasa-Indonesia_.png

49 ms

Top-in-the-Country-Additional-Math_.png

Top-in-the-Country-Additional-Math_.png

53 ms

High-Achievement-Computer-Science_.png

High-Achievement-Computer-Science_.png

57 ms

Top-3-in-Palembang-City___.png

Top-3-in-Palembang-City___.png

59 ms

Perfect-Score-Math__.png

Perfect-Score-Math__.png

62 ms

Silver-Certificate-Science_.png

Silver-Certificate-Science_.png

60 ms

Gold-Certificate-Science_.png

Gold-Certificate-Science_.png

63 ms

Bronze-Certificate-Science_.png

Bronze-Certificate-Science_.png

67 ms

Best-Across-8-Subjects-Awards.png

Best-Across-8-Subjects-Awards.png

65 ms

js

js

98 ms

style.css

style.css

13 ms

jquery.min.js

jquery.min.js

16 ms

jquery.rotate.js

jquery.rotate.js

15 ms

Wharton-school.png

Wharton-school.png

10 ms

university_of_toronto.png

university_of_toronto.png

9 ms

University_of_Melbourne_logo.png

University_of_Melbourne_logo.png

14 ms

university_of_british_columbia.png

university_of_british_columbia.png

27 ms

univ_of_st_andrews.png

univ_of_st_andrews.png

28 ms

simon_fraser_university.png

simon_fraser_university.png

29 ms

national-university-of-singapore-logo.png

national-university-of-singapore-logo.png

30 ms

logo_University_of_California_SanDiego.png

logo_University_of_California_SanDiego.png

30 ms

Imperial-College-London2.png

Imperial-College-London2.png

29 ms

carnegie_mellon_univ.png

carnegie_mellon_univ.png

31 ms

Accessibility Review

sisschools.org accessibility score

75

Accessibility Issues

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

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

High

Image elements do not have [alt] attributes

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

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

High

Heading elements are not in a sequentially-descending order

Best Practices

sisschools.org 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

sisschools.org SEO score

84

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

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 Sisschools.org 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 Sisschools.org 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

sisschools.org

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