Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

amazon-course.com

Amazon.com. Spend less. Smile more.

Page Load Speed

2.4 sec in total

First Response

170 ms

Resources Loaded

1.7 sec

Page Rendered

523 ms

amazon-course.com screenshot

About Website

Welcome to amazon-course.com homepage info - get ready to check Amazon Course best content right away, or after learning these important things about amazon-course.com

Free shipping on millions of items. Get the best of Shopping and Entertainment with Prime. Enjoy low prices and great deals on the largest selection of everyday essentials and other products, includin...

Visit amazon-course.com

Key Findings

We analyzed Amazon-course.com page load time and found that the first response time was 170 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

amazon-course.com performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value800 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

Network Requests Diagram

amazon-course.com

170 ms

ref=as_li_ss_tl

5 ms

ref=as_li_ss_tl

342 ms

11EIQ5IGqaL._RC%7C01e5ncglxyL.css,01lF2n-pPaL.css,41SwWPpN5yL.css,31+Z83i6adL.css,01IWMurvs8L.css,01ToTiqCP7L.css,01qPl4hxayL.css,01ITNc8rK9L.css,413Vvv3GONL.css,11TIuySqr6L.css,01Rw4F+QU6L.css,11j54vTBQxL.css,01pbKJp5dbL.css,01IdKcBuAdL.css,01y-XAlI+2L.css,213SZJ8Z+PL.css,01oDR3IULNL.css,51qPa7JG96L.css,01XPHJk60-L.css,01dmkcyJuIL.css,01B9+-hVWxL.css,21Ol27dM9tL.css,11JRZ3s9niL.css,21wA+jAxKjL.css,11U8GXfhueL.css,01CFUgsA-YL.css,316CD+csp-L.css,116t+WD27UL.css,11uWFHlOmWL.css,11v8YDG4ifL.css,11otOAnaYoL.css,01FwL+mJQOL.css,11NDsgnHEZL.css,21RE+gQIxcL.css,11CLXYZ6DRL.css,012f1fcyibL.css,21w-O41p+SL.css,11XH+76vMZL.css,11hvENnYNUL.css,11FRI-QT39L.css,01890+Vwk8L.css,01864Lq457L.css,01cbS3UK11L.css,21F85am0yFL.css,01ySiGRmxlL.css,016Sx2kF1+L.css_.css

21 ms

41-WpIOxHtL._RC%7C71qKpXn7rHL.css,415rb7zC-GL.css,11GB7tDtz6L.css,11cb452ZkFL.css,31MqpFX13CL.css,31YZpDCYJPL.css,21pkK7OQMnL.css,41yQj5y2obL.css,110Nj+wUGYL.css,31OvHRW+XiL.css,01R53xsjpjL.css,11EKggV-DlL.css,41yKpEQVJkL.css,11qTzxZ0Y5L.css_.css

20 ms

Our browser made a total of 298 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Amazon-course.com, 74% (222 requests) were made to M.media-amazon.com and 18% (53 requests) were made to Images-na.ssl-images-amazon.com. The less responsive or slowest element that took the longest time to load (365 ms) relates to the external source Fls-na.amazon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 985.5 kB (22%)

Content Size

4.6 MB

After Optimization

3.6 MB

In fact, the total size of Amazon-course.com main page is 4.6 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 609.7 kB

  • Original 749.8 kB
  • After minification 742.5 kB
  • After compression 140.1 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 609.7 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 35.0 kB

  • Original 3.1 MB
  • After minification 3.1 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. Amazon Course images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 17.7 kB

  • Original 328.8 kB
  • After minification 328.8 kB
  • After compression 311.1 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

-85%

Potential reduce by 323.1 kB

  • Original 380.8 kB
  • After minification 380.4 kB
  • After compression 57.7 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. Amazon-course.com needs all CSS files to be minified and compressed as it can save up to 323.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (11%)

Requests Now

287

After Optimization

255

The browser has sent 287 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Amazon Course. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

amazon-course.com accessibility score

94

Accessibility Issues

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

amazon-course.com 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

amazon-course.com SEO score

85

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

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 Amazon-course.com 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 Amazon-course.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 description is not detected on the main page of Amazon Course. 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: