Tools & Wizards About Us

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

sayama-kaikan.jp

狭山市市民会館｜埼玉県狭山市

Page Load Speed

18.3 sec in total

First Response

579 ms

Resources Loaded

17.3 sec

Page Rendered

398 ms

About Website

Visit sayama-kaikan.jp now to see the best up-to-date Sayama Kaikan content and also check out these interesting facts you probably never knew about sayama-kaikan.jp

【公式サイト】埼玉県狭山市にある狭山市市民会館は、大・小ホールや会議室、展示室、和室など諸室を備えた文化施設です。公演・イベント情報、施設紹介、ご利用方法など。

Visit sayama-kaikan.jp

Key Findings

We analyzed Sayama-kaikan.jp page load time and found that the first response time was 579 ms and then it took 17.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

sayama-kaikan.jp performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value22.7 s

0/100

25%

SI (Speed Index)

Value29.0 s

0/100

10%

TBT (Total Blocking Time)

Value1,660 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.471

18/100

15%

TTI (Time to Interactive)

Value24.4 s

0/100

10%

Network Requests Diagram

sayama-kaikan.jp

579 ms

www.sayama-kaikan.jp

1837 ms

jquery.min.js

31 ms

se-styles.css

563 ms

css

44 ms

Our browser made a total of 134 requests to load all elements on the main page. We found that 72% of them (97 requests) were addressed to the original Sayama-kaikan.jp, 13% (18 requests) were made to Platform.twitter.com and 4% (5 requests) were made to Syndication.twitter.com. The less responsive or slowest element that took the longest time to load (7.9 sec) belongs to the original domain Sayama-kaikan.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 848.7 kB (13%)

Content Size

6.8 MB

After Optimization

5.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sayama-kaikan.jp main page is 6.8 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. 70% of websites need less resources to load. Images take 5.8 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 73.7 kB

  • Original 86.7 kB
  • After minification 74.8 kB
  • After compression 12.9 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 11.9 kB, which is 14% 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 73.7 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 118.0 kB

  • Original 5.8 MB
  • After minification 5.7 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. Sayama Kaikan images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 410.9 kB

  • Original 609.8 kB
  • After minification 430.7 kB
  • After compression 198.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 410.9 kB or 67% of the original size.

CSS Optimization

-80%

Potential reduce by 246.1 kB

  • Original 309.3 kB
  • After minification 303.6 kB
  • After compression 63.1 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. Sayama-kaikan.jp needs all CSS files to be minified and compressed as it can save up to 246.1 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 62 (47%)

Requests Now

132

After Optimization

70

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 132 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sayama Kaikan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 44 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

sayama-kaikan.jp accessibility score

71

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

sayama-kaikan.jp best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

sayama-kaikan.jp SEO score

91

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sayama-kaikan.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 Sayama-kaikan.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 description is not detected on the main page of Sayama Kaikan. 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: