Tools & Wizards About Us
cello-academy.com screenshot

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

cello-academy.com

Cello Academy :||: Online Cello Lessons | Learn Cello

Page Load Speed

4.8 sec in total

First Response

1 sec

Resources Loaded

3.3 sec

Page Rendered

475 ms

cello-academy.com screenshot

About Website

Visit cello-academy.com now to see the best up-to-date Cello Academy content and also check out these interesting facts you probably never knew about cello-academy.com

Cello music for beginners and advanced students. Watch our ONLINE CELLO LESSONS! Listen & See cello music on Youtube. Hans Zentgraf is your teacher. FREE!

Visit cello-academy.com

Key Findings

We analyzed Cello-academy.com page load time and found that the first response time was 1 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

cello-academy.com performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value12.1 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value2,220 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.287

42/100

15%

TTI (Time to Interactive)

Value17.6 s

4/100

10%

Network Requests Diagram

www.cello-academy.com

1001 ms

p.css

99 ms

basicLightbox.min.css

196 ms

cookie-law-info-public.css

271 ms

cookie-law-info-gdpr.css

285 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 57% of them (51 requests) were addressed to the original Cello-academy.com, 11% (10 requests) were made to Static.xx.fbcdn.net and 8% (7 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Cello-academy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 182.2 kB (9%)

Content Size

2.0 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cello-academy.com main page is 2.0 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. 75% 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 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 116.9 kB

  • Original 140.5 kB
  • After minification 111.3 kB
  • After compression 23.6 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 29.1 kB, which is 21% 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 116.9 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 6 B

  • Original 1.2 MB
  • After minification 1.2 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. Cello Academy images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 57.0 kB

  • Original 553.0 kB
  • After minification 553.0 kB
  • After compression 496.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-9%

Potential reduce by 8.3 kB

  • Original 93.8 kB
  • After minification 93.8 kB
  • After compression 85.5 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. Cello-academy.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 67 (76%)

Requests Now

88

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cello Academy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 40 to 1 for JavaScripts and from 22 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.cello-academy.com

www.cello-academy.com

1001 ms

p.css

p.css

99 ms

basicLightbox.min.css

basicLightbox.min.css

196 ms

cookie-law-info-public.css

cookie-law-info-public.css

271 ms

cookie-law-info-gdpr.css

cookie-law-info-gdpr.css

285 ms

wpedon.css

wpedon.css

289 ms

style.css

style.css

293 ms

tlpportfolio.css

tlpportfolio.css

290 ms

style.css

style.css

294 ms

font-938fc17636f6f1643a46d588423de3b0.css

font-938fc17636f6f1643a46d588423de3b0.css

365 ms

bootstrap.min.css

bootstrap.min.css

480 ms

font-awesome.min.css

font-awesome.min.css

390 ms

slick.css

slick.css

393 ms

magnific-popup.css

magnific-popup.css

401 ms

style.css

style.css

393 ms

gutenberg-front.css

gutenberg-front.css

459 ms

tablepress-combined.min.css

tablepress-combined.min.css

501 ms

ytprefs.min.css

ytprefs.min.css

499 ms

jquery.min.js

jquery.min.js

499 ms

jquery-migrate.min.js

jquery-migrate.min.js

519 ms

p.js

p.js

554 ms

basicLightbox.min.js

basicLightbox.min.js

578 ms

cookie-law-info-public.js

cookie-law-info-public.js

591 ms

custom.js

custom.js

592 ms

ytprefs.min.js

ytprefs.min.js

594 ms

platform.js

platform.js

36 ms

sdk.js

sdk.js

22 ms

shariff.min.css

shariff.min.css

696 ms

cookie-law-info-table.css

cookie-law-info-table.css

711 ms

30 ms

wpedon.js

wpedon.js

710 ms

app.js

app.js

823 ms

slick.min.js

slick.min.js

712 ms

skip-link-focus-fix.js

skip-link-focus-fix.js

712 ms

bootstrap.min.js

bootstrap.min.js

713 ms

wow.min.js

wow.min.js

832 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

835 ms

imagesloaded.min.js

imagesloaded.min.js

833 ms

masonry.min.js

masonry.min.js

834 ms

lawyer-zone-custom.js

lawyer-zone-custom.js

834 ms

fitvids.min.js

fitvids.min.js

792 ms

responsive.min.js

responsive.min.js

710 ms

btn_donate_pp_142x27.png

btn_donate_pp_142x27.png

104 ms

cropped-cello-academy.jpg

cropped-cello-academy.jpg

508 ms

Hans-Zentrgraf-Study-Cello-Online.jpg

Hans-Zentrgraf-Study-Cello-Online.jpg

507 ms

image-box-beginners.jpg

image-box-beginners.jpg

507 ms

image-box-tec.jpg

image-box-tec.jpg

506 ms

image-box-piano.jpg

image-box-piano.jpg

507 ms

image-box-repertoire.jpg

image-box-repertoire.jpg

525 ms

cello-6148563_1920.jpg

cello-6148563_1920.jpg

656 ms

cellos-5011115_1920.jpg

cellos-5011115_1920.jpg

964 ms

cello-4412332_1920-1.jpg

cello-4412332_1920-1.jpg

968 ms

cello.jpg

cello.jpg

862 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

566 ms

sdk.js

sdk.js

14 ms

pixel.gif

pixel.gif

34 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

122 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

122 ms

subscribe_embed

subscribe_embed

203 ms

zentgraf-header.jpg

zentgraf-header.jpg

534 ms

page.php

page.php

175 ms

postmessageRelay

postmessageRelay

134 ms

www-subscribe-embed_split_v0.css

www-subscribe-embed_split_v0.css

46 ms

www-subscribe-embed_v0.js

www-subscribe-embed_v0.js

66 ms

AIdro_lj-bk_leuAtO-Zcs168TLw2gr_a3jeIMHlEClLKOqr3g=s48-c-k-c0x00ffffff-no-rj

AIdro_lj-bk_leuAtO-Zcs168TLw2gr_a3jeIMHlEClLKOqr3g=s48-c-k-c0x00ffffff-no-rj

294 ms

subscribe_button_branded_lozenge.png

subscribe_button_branded_lozenge.png

40 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

16 ms

ZFluMDo2EQh.css

ZFluMDo2EQh.css

82 ms

qGxgdu-GX5h.js

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116 ms

o1ndYS2og_B.js

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158 ms

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156 ms

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156 ms

Glud--w-qOK.js

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165 ms

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152 ms

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163 ms

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99 ms

rpc:shindig_random.js

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38 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

133 ms

cb=gapi.loaded_2

cb=gapi.loaded_2

131 ms

300188803_373176148348265_7788458734026447098_n.jpg

300188803_373176148348265_7788458734026447098_n.jpg

148 ms

yhMLxgtMNUo.js

yhMLxgtMNUo.js

114 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

111 ms

border_3.gif

border_3.gif

17 ms

subscribe_embed

subscribe_embed

49 ms

spacer.gif

spacer.gif

33 ms

bubbleSprite_3.png

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11 ms

bubbleDropR_3.png

bubbleDropR_3.png

18 ms

bubbleDropB_3.png

bubbleDropB_3.png

33 ms

www-subscribe-embed-card_v0.css

www-subscribe-embed-card_v0.css

11 ms

www-subscribe-embed-card_v0.js

www-subscribe-embed-card_v0.js

22 ms

Accessibility Review

cello-academy.com accessibility score

81

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

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

cello-academy.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

cello-academy.com SEO score

92

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

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

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cello-academy.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed German language. Our system also found out that Cello-academy.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

cello-academy.com

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