Report Summary

  • 44

    Performance

    Renders faster than
    64% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

jazzpro.jp

横濱ジャズプロムナード

Page Load Speed

6.5 sec in total

First Response

1.3 sec

Resources Loaded

5 sec

Page Rendered

254 ms

jazzpro.jp screenshot

About Website

Visit jazzpro.jp now to see the best up-to-date Jazzpro content for Japan and also check out these interesting facts you probably never knew about jazzpro.jp

横浜の街全体がステージとなる。日本最大級のジャズフェスティバル。

Visit jazzpro.jp

Key Findings

We analyzed Jazzpro.jp page load time and found that the first response time was 1.3 sec and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

jazzpro.jp performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value14.2 s

0/100

25%

SI (Speed Index)

Value9.1 s

14/100

10%

TBT (Total Blocking Time)

Value290 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

jazzpro.jp

1296 ms

style.css

840 ms

shadowbox.css

371 ms

jquery.js

1033 ms

jquery-migrate.min.js

540 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 51% of them (44 requests) were addressed to the original Jazzpro.jp, 9% (8 requests) were made to Apis.google.com and 8% (7 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Jazzpro.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 568.4 kB (19%)

Content Size

3.0 MB

After Optimization

2.4 MB

In fact, the total size of Jazzpro.jp main page is 3.0 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. 60% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 29.8 kB

  • Original 38.2 kB
  • After minification 33.9 kB
  • After compression 8.3 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 4.3 kB, which is 11% 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 29.8 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 44.2 kB

  • Original 2.2 MB
  • After minification 2.2 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. Jazzpro images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 255.9 kB

  • Original 410.2 kB
  • After minification 409.1 kB
  • After compression 154.3 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 255.9 kB or 62% of the original size.

CSS Optimization

-83%

Potential reduce by 238.5 kB

  • Original 286.6 kB
  • After minification 274.9 kB
  • After compression 48.1 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. Jazzpro.jp needs all CSS files to be minified and compressed as it can save up to 238.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (44%)

Requests Now

82

After Optimization

46

The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jazzpro. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

jazzpro.jp accessibility score

90

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.

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

Links do not have a discernible name

Best Practices

jazzpro.jp 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

SEO Factors

jazzpro.jp SEO score

100

Search Engine Optimization Advices

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jazzpro.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Jazzpro.jp 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 Jazzpro. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: