Tools & Wizards About Us

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

jazzimprovisation.com

Jazz Improvisation Videos | Instructional Videos | Training

Page Load Speed

2.2 sec in total

First Response

421 ms

Resources Loaded

1.4 sec

Page Rendered

423 ms

About Website

Visit jazzimprovisation.com now to see the best up-to-date Jazz Improvisation content and also check out these interesting facts you probably never knew about jazzimprovisation.com

Welcome to the Jazz Conception Company. Hours of expert instruction by Jim Snidero, iPad app, 19 play alongs. The new leader in jazz improvisation videos.

Visit jazzimprovisation.com

Key Findings

We analyzed Jazzimprovisation.com page load time and found that the first response time was 421 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

jazzimprovisation.com performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value11.9 s

0/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.411

24/100

15%

TTI (Time to Interactive)

Value8.3 s

39/100

10%

Network Requests Diagram

www.jazzimprovisation.com

421 ms

e691fbb97a3a4b6ed420c34d796dca98.css

27 ms

18ecd6dd3125e346ec79e5abc7338cd8.css

78 ms

f5b009959abdbed05f013a6a566255b2.js

150 ms

jquery-3.3.1.min.js

26 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 83% of them (63 requests) were addressed to the original Jazzimprovisation.com, 7% (5 requests) were made to Fonts.gstatic.com and 5% (4 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (443 ms) belongs to the original domain Jazzimprovisation.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 76.2 kB (5%)

Content Size

1.6 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jazzimprovisation.com main page is 1.6 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 38.1 kB

  • Original 46.5 kB
  • After minification 44.1 kB
  • After compression 8.4 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 38.1 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 5.9 kB

  • Original 1.4 MB
  • After minification 1.4 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. Jazz Improvisation images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 25.9 kB

  • Original 140.5 kB
  • After minification 140.5 kB
  • After compression 114.7 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 25.9 kB or 18% of the original size.

CSS Optimization

-14%

Potential reduce by 6.3 kB

  • Original 46.0 kB
  • After minification 45.8 kB
  • After compression 39.7 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. Jazzimprovisation.com needs all CSS files to be minified and compressed as it can save up to 6.3 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (45%)

Requests Now

69

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jazz Improvisation. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jazzimprovisation.com accessibility score

85

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

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

jazzimprovisation.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

SEO Factors

jazzimprovisation.com SEO score

83

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

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 Jazzimprovisation.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 Jazzimprovisation.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 Jazz Improvisation. 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: