Tools & Wizards About Us

Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

mastercourses.com

Page Load Speed

4 sec in total

First Response

228 ms

Resources Loaded

3.4 sec

Page Rendered

374 ms

About Website

Click here to check amazing Mastercourses content for France. Otherwise, check out these important facts you probably never knew about mastercourses.com

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Key Findings

We analyzed Mastercourses.com page load time and found that the first response time was 228 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

mastercourses.com performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.241

51/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

mastercourses.com

228 ms

www.mastercourses.com

517 ms

analytics.js

24 ms

main.css

119 ms

logo.png

197 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 95% of them (36 requests) were addressed to the original Mastercourses.com, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Mastercourses.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 87.2 kB (8%)

Content Size

1.0 MB

After Optimization

942.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mastercourses.com main page is 1.0 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. 35% of websites need less resources to load. Images take 955.0 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 12.6 kB

  • Original 17.2 kB
  • After minification 14.4 kB
  • After compression 4.6 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 2.8 kB, which is 16% 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 12.6 kB or 73% of the original size.

Image Optimization

-5%

Potential reduce by 44.2 kB

  • Original 955.0 kB
  • After minification 910.8 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. Mastercourses images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-83%

Potential reduce by 30.3 kB

  • Original 36.6 kB
  • After minification 36.5 kB
  • After compression 6.3 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. Mastercourses.com needs all CSS files to be minified and compressed as it can save up to 30.3 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

32

After Optimization

32

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mastercourses. According to our analytics all requests are already optimized.

Network Requests Diagram

Best Practices

mastercourses.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Missing source maps for large first-party JavaScript

SEO Factors

mastercourses.com SEO score

50

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

Document doesn't have a <title> element

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mastercourses.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 Mastercourses.com 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 Mastercourses. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: