Tools & Wizards About Us

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

bis.k12.tr

İstanbul - The British International School - The BIS

Page Load Speed

5.1 sec in total

First Response

504 ms

Resources Loaded

4.4 sec

Page Rendered

186 ms

About Website

Visit bis.k12.tr now to see the best up-to-date BIS K 12 content and also check out these interesting facts you probably never knew about bis.k12.tr

The British International School in Istanbul has a worldwide reputation for the education it provides. It is a leading private International School in Turkey, offering a modified English National Curr...

Visit bis.k12.tr

Key Findings

We analyzed Bis.k12.tr page load time and found that the first response time was 504 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

bis.k12.tr performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.5 s

2/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value28.3 s

0/100

10%

TBT (Total Blocking Time)

Value8,690 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.209

59/100

15%

TTI (Time to Interactive)

Value65.7 s

0/100

10%

Network Requests Diagram

bis.k12.tr

504 ms

www.bis.k12.tr

1272 ms

bootstrap

798 ms

owlcarousel

553 ms

cookieconsent

557 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 82% of them (76 requests) were addressed to the original Bis.k12.tr, 5% (5 requests) were made to Youtube.com and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Bis.k12.tr.

Page Optimization Overview & Recommendations

Page size can be reduced by 571.8 kB (10%)

Content Size

5.5 MB

After Optimization

4.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bis.k12.tr 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 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 56.6 kB

  • Original 66.9 kB
  • After minification 55.6 kB
  • After compression 10.3 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 11.3 kB, which is 17% 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 56.6 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 115.5 kB

  • Original 4.6 MB
  • After minification 4.4 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. BIS K 12 images are well optimized though.

JavaScript Optimization

-48%

Potential reduce by 346.6 kB

  • Original 728.2 kB
  • After minification 728.1 kB
  • After compression 381.6 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 346.6 kB or 48% of the original size.

CSS Optimization

-46%

Potential reduce by 53.1 kB

  • Original 116.6 kB
  • After minification 104.7 kB
  • After compression 63.5 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. Bis.k12.tr needs all CSS files to be minified and compressed as it can save up to 53.1 kB or 46% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (32%)

Requests Now

85

After Optimization

58

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BIS K 12. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

bis.k12.tr accessibility score

72

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

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 IDs are not unique

Best Practices

bis.k12.tr best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

bis.k12.tr SEO score

75

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

High

Image elements do not have [alt] attributes

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 Bis.k12.tr 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 Bis.k12.tr 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

Open Graph data is detected on the main page of BIS K 12. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: