Tools & Wizards About Us
blackbeltschools.com screenshot

Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

blackbeltschools.com

Tae Kwon-Do Association of Great Britain - Black Belt Schools - Tae Kwon-Do, martial arts, self defence and fitness training

Page Load Speed

1.7 sec in total

First Response

390 ms

Resources Loaded

1.1 sec

Page Rendered

180 ms

blackbeltschools.com screenshot

About Website

Visit blackbeltschools.com now to see the best up-to-date Black Belt Schools content for United Kingdom and also check out these interesting facts you probably never knew about blackbeltschools.com

Martial arts and fitness training resources, from the Tae Kwon-Do Association of Great Britain TAGB specialising in tae kwon-do, self defence, cardiokick and kickboxing. Get up to date news and events...

Visit blackbeltschools.com

Key Findings

We analyzed Blackbeltschools.com page load time and found that the first response time was 390 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

blackbeltschools.com performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

59/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

blackbeltschools.com

390 ms

stylesheet.css

156 ms

blackculm.js

163 ms

_blackculm.js

234 ms

jquery.js

396 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Blackbeltschools.com and no external sources were called. The less responsive or slowest element that took the longest time to load (477 ms) belongs to the original domain Blackbeltschools.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 269.7 kB (65%)

Content Size

415.7 kB

After Optimization

146.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blackbeltschools.com main page is 415.7 kB. 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 10% of websites need less resources to load. Javascripts take 358.2 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 4.9 kB

  • Original 7.3 kB
  • After minification 7.2 kB
  • After compression 2.4 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 4.9 kB or 67% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 39.8 kB
  • After minification 39.8 kB

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. Black Belt Schools images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 256.2 kB

  • Original 358.2 kB
  • After minification 350.4 kB
  • After compression 102.0 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 256.2 kB or 72% of the original size.

CSS Optimization

-83%

Potential reduce by 8.6 kB

  • Original 10.4 kB
  • After minification 8.4 kB
  • After compression 1.8 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. Blackbeltschools.com needs all CSS files to be minified and compressed as it can save up to 8.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (15%)

Requests Now

20

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Black Belt 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 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

blackbeltschools.com

blackbeltschools.com

390 ms

stylesheet.css

stylesheet.css

156 ms

blackculm.js

blackculm.js

163 ms

_blackculm.js

_blackculm.js

234 ms

jquery.js

jquery.js

396 ms

jqueryUI.js

jqueryUI.js

477 ms

back.jpg

back.jpg

84 ms

header-back.jpg

header-back.jpg

82 ms

header.jpg

header.jpg

234 ms

nav-back.gif

nav-back.gif

80 ms

grade04.jpg

grade04.jpg

82 ms

box-htl.gif

box-htl.gif

80 ms

box-htr.gif

box-htr.gif

157 ms

box-bl.gif

box-bl.gif

159 ms

box-br.gif

box-br.gif

159 ms

sidekick.jpg

sidekick.jpg

160 ms

tagb-222222.gif

tagb-222222.gif

161 ms

joining.jpg

joining.jpg

234 ms

syllabus.jpg

syllabus.jpg

237 ms

schools.jpg

schools.jpg

237 ms

events.jpg

events.jpg

239 ms

Accessibility Review

blackbeltschools.com accessibility score

49

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

blackbeltschools.com best practices score

67

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

blackbeltschools.com SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    N/A

  • Encoding

    ISO-8859-1

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

blackbeltschools.com

Open Graph description is not detected on the main page of Black Belt Schools. 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: