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erhulessons.com screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    67% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

erhulessons.com

Learn to play the erhu with master Ling Peng - E-learning and erhu Lessons

Page Load Speed

2.5 sec in total

First Response

245 ms

Resources Loaded

2.1 sec

Page Rendered

147 ms

erhulessons.com screenshot

About Website

Click here to check amazing Erhu Lessons content for Russia. Otherwise, check out these important facts you probably never knew about erhulessons.com

Online erhu lessons with a master Erhu player, erhu videos, exercises and sheet music - the best way to learn to play the erhu

Visit erhulessons.com

Key Findings

We analyzed Erhulessons.com page load time and found that the first response time was 245 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

erhulessons.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

16/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.106

88/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

erhulessons.com

245 ms

www.erhulessons.com

528 ms

video.css

181 ms

font.css

356 ms

style.css

482 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 82% of them (18 requests) were addressed to the original Erhulessons.com, 9% (2 requests) were made to Google-analytics.com and 5% (1 request) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (859 ms) belongs to the original domain Erhulessons.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 56.3 kB (38%)

Content Size

147.9 kB

After Optimization

91.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Erhulessons.com main page is 147.9 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. 20% of websites need less resources to load. HTML takes 66.5 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 51.9 kB

  • Original 66.5 kB
  • After minification 64.8 kB
  • After compression 14.6 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. 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 51.9 kB or 78% of the original size.

Image Optimization

-7%

Potential reduce by 4.4 kB

  • Original 60.4 kB
  • After minification 56.0 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. Erhu Lessons 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.

Requests Breakdown

Number of requests can be reduced by 10 (56%)

Requests Now

18

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Erhu Lessons. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

erhulessons.com

erhulessons.com

245 ms

www.erhulessons.com

www.erhulessons.com

528 ms

video.css

video.css

181 ms

font.css

font.css

356 ms

style.css

style.css

482 ms

compat.js

compat.js

455 ms

external.js

external.js

859 ms

shared.js

shared.js

365 ms

site.js

site.js

385 ms

analytics.js

analytics.js

258 ms

logo.png

logo.png

151 ms

welcome.png

welcome.png

149 ms

video.css

video.css

178 ms

font.css

font.css

160 ms

style.css

style.css

279 ms

intro.jpg

intro.jpg

178 ms

decal.png

decal.png

260 ms

vjs.woff

vjs.woff

258 ms

erhu-lessons.woff

erhu-lessons.woff

310 ms

collect

collect

67 ms

collect

collect

34 ms

js

js

63 ms

Accessibility Review

erhulessons.com accessibility score

88

Accessibility Issues

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

erhulessons.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

erhulessons.com SEO score

92

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

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 Erhulessons.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 Erhulessons.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

erhulessons.com

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