Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

saf.or.jp

公益財団法人埼玉県芸術文化振興財団

Page Load Speed

10.2 sec in total

First Response

2.3 sec

Resources Loaded

7.5 sec

Page Rendered

371 ms

saf.or.jp screenshot

About Website

Click here to check amazing Saf content for Japan. Otherwise, check out these important facts you probably never knew about saf.or.jp

公益財団法人埼玉県芸術文化振興財団の公式サイトです。彩の国さいたま芸術劇場、埼玉会館、熊谷会館の3館を管理運営しており、蜷川幸雄芸術監督のもと、芸術性の高い作品を創造・発信しています。

Visit saf.or.jp

Key Findings

We analyzed Saf.or.jp page load time and found that the first response time was 2.3 sec and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

saf.or.jp performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value13.3 s

0/100

25%

SI (Speed Index)

Value31.5 s

0/100

10%

TBT (Total Blocking Time)

Value8,760 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.767

5/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

Network Requests Diagram

saf.or.jp

2288 ms

common.css

337 ms

style.css

524 ms

index.css

367 ms

global.css

389 ms

Our browser made a total of 145 requests to load all elements on the main page. We found that 81% of them (118 requests) were addressed to the original Saf.or.jp, 8% (12 requests) were made to Google.com and 2% (3 requests) were made to Cse.google.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Saf.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 631.2 kB (17%)

Content Size

3.8 MB

After Optimization

3.1 MB

In fact, the total size of Saf.or.jp main page is 3.8 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. 65% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 113.0 kB

  • Original 126.7 kB
  • After minification 91.9 kB
  • After compression 13.7 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 34.8 kB, which is 27% 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 113.0 kB or 89% of the original size.

Image Optimization

-2%

Potential reduce by 71.8 kB

  • Original 3.0 MB
  • After minification 2.9 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. Saf images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 185.6 kB

  • Original 373.8 kB
  • After minification 357.3 kB
  • After compression 188.2 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 185.6 kB or 50% of the original size.

CSS Optimization

-83%

Potential reduce by 260.8 kB

  • Original 312.9 kB
  • After minification 295.1 kB
  • After compression 52.1 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. Saf.or.jp needs all CSS files to be minified and compressed as it can save up to 260.8 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (25%)

Requests Now

138

After Optimization

104

The browser has sent 138 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Saf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

saf.or.jp accessibility score

77

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

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

saf.or.jp best practices score

58

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

High

Browser errors were logged to the console

SEO Factors

saf.or.jp SEO score

77

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

High

Image elements do not have [alt] attributes

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 Saf.or.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 Saf.or.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 Saf. 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: