Tools & Wizards About Us
isp.cz screenshot

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

isp.cz

International School of Prague | Official Website

Page Load Speed

1.9 sec in total

First Response

190 ms

Resources Loaded

1.5 sec

Page Rendered

228 ms

isp.cz screenshot

About Website

Welcome to isp.cz homepage info - get ready to check Isp best content for Czech Republic right away, or after learning these important things about isp.cz

International School of Prague offers a world-class IB education, exceptional campus, and global community for ages 3–18.

Visit isp.cz

Key Findings

We analyzed Isp.cz page load time and found that the first response time was 190 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

isp.cz performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

51/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.197

63/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

isp.cz

190 ms

www.isp.cz

597 ms

styles.cfm

79 ms

ss.css

13 ms

jquery.min.js

20 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 71% of them (51 requests) were addressed to the original Isp.cz, 15% (11 requests) were made to Newjs.finalsite.com and 6% (4 requests) were made to Newcss.finalsite.com. The less responsive or slowest element that took the longest time to load (597 ms) belongs to the original domain Isp.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 479.7 kB (17%)

Content Size

2.9 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isp.cz main page is 2.9 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. 45% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 31.7 kB

  • Original 40.4 kB
  • After minification 37.4 kB
  • After compression 8.8 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 31.7 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 73.4 kB

  • Original 2.3 MB
  • After minification 2.2 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. Isp images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 299.2 kB

  • Original 429.1 kB
  • After minification 390.5 kB
  • After compression 129.9 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 299.2 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 75.4 kB

  • Original 91.8 kB
  • After minification 72.4 kB
  • After compression 16.4 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. Isp.cz needs all CSS files to be minified and compressed as it can save up to 75.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (42%)

Requests Now

69

After Optimization

40

  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isp. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

isp.cz

isp.cz

190 ms

www.isp.cz

www.isp.cz

597 ms

styles.cfm

styles.cfm

79 ms

ss.css

ss.css

13 ms

jquery.min.js

jquery.min.js

20 ms

fs_global.js

fs_global.js

17 ms

jquery.fsBreakly.js

jquery.fsBreakly.js

19 ms

blog.js

blog.js

19 ms

news.css

news.css

13 ms

calendar.css

calendar.css

19 ms

container.css

container.css

18 ms

container-skin.css

container-skin.css

20 ms

structure.css

structure.css

12 ms

displaybanner.css.cfm

displaybanner.css.cfm

75 ms

jquery.ui.1.8rc3.css

jquery.ui.1.8rc3.css

23 ms

global_vars.js

global_vars.js

73 ms

home.css

home.css

72 ms

jquery.ui.min.js

jquery.ui.min.js

4 ms

flash_headers.js

flash_headers.js

39 ms

ga.js

ga.js

18 ms

main.css

main.css

59 ms

space.gif

space.gif

49 ms

logo.png

logo.png

55 ms

ql_btn.png

ql_btn.png

109 ms

facebook.png

facebook.png

54 ms

login_btn.png

login_btn.png

86 ms

AF_Logo_for_web.png

AF_Logo_for_web.png

168 ms

about_btn.png

about_btn.png

113 ms

admissions_btn.png

admissions_btn.png

114 ms

academics_btn.png

academics_btn.png

116 ms

community_btn.png

community_btn.png

116 ms

student_btn.png

student_btn.png

117 ms

support_btn.png

support_btn.png

128 ms

alumni_btn.png

alumni_btn.png

142 ms

calendar_btn.png

calendar_btn.png

142 ms

contact_btn.png

contact_btn.png

141 ms

news_title.png

news_title.png

141 ms

arrow_down.png

arrow_down.png

143 ms

cal_title.png

cal_title.png

190 ms

__utm.gif

__utm.gif

67 ms

video_title.png

video_title.png

136 ms

US_Girls_Football.jpg

US_Girls_Football.jpg

346 ms

cois.png

cois.png

140 ms

duke.png

duke.png

188 ms

ecis.png

ecis.png

172 ms

neasc.png

neasc.png

185 ms

ib.png

ib.png

186 ms

ceesa.png

ceesa.png

186 ms

3758698736_0cf7275347_b.jpg

3758698736_0cf7275347_b.jpg

459 ms

falcon.jpg

falcon.jpg

363 ms

MS_Dance_Jan_2014v2.jpg

MS_Dance_Jan_2014v2.jpg

362 ms

6365056577_584cfa063f_b.jpg

6365056577_584cfa063f_b.jpg

334 ms

library.jpg

library.jpg

422 ms

mission.jpg

mission.jpg

469 ms

poweredBy.svg

poweredBy.svg

51 ms

search_keywords.png

search_keywords.png

339 ms

search_submit.png

search_submit.png

359 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

23 ms

ui-icons_222222_256x240.png

ui-icons_222222_256x240.png

17 ms

collect

collect

70 ms

nr-885.min.js

nr-885.min.js

42 ms

ql_btn_on.png

ql_btn_on.png

46 ms

about_btn_on.png

about_btn_on.png

54 ms

admissions_btn_on.png

admissions_btn_on.png

41 ms

academics_btn_on.png

academics_btn_on.png

41 ms

community_btn_on.png

community_btn_on.png

49 ms

student_btn_on.png

student_btn_on.png

41 ms

support_btn_on.png

support_btn_on.png

67 ms

alumni_btn_on.png

alumni_btn_on.png

79 ms

calendar_btn_on.png

calendar_btn_on.png

71 ms

contact_btn_on.png

contact_btn_on.png

89 ms

17f1641df3

17f1641df3

46 ms

Accessibility Review

isp.cz accessibility score

89

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

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.

Best Practices

isp.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

isp.cz 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

    N/A

  • Encoding

    ISO-8859-1

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

isp.cz

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