Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 70

    SEO

    Google-friendlier than
    30% of websites

udc.or.jp

公益財団法人都市づくりパブリックデザインセンター(公式ホームページ)

Page Load Speed

8.7 sec in total

First Response

529 ms

Resources Loaded

7.8 sec

Page Rendered

368 ms

udc.or.jp screenshot

About Website

Welcome to udc.or.jp homepage info - get ready to check Udc best content right away, or after learning these important things about udc.or.jp

公益財団法人都市づくりパブリックデザインセンターのHOMEです

Visit udc.or.jp

Key Findings

We analyzed Udc.or.jp page load time and found that the first response time was 529 ms and then it took 8.1 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

udc.or.jp performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value18.9 s

0/100

10%

TBT (Total Blocking Time)

Value4,330 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.211

59/100

15%

TTI (Time to Interactive)

Value20.2 s

2/100

10%

Network Requests Diagram

udc.or.jp

529 ms

www.udc.or.jp

1810 ms

reset.css

323 ms

pc.css

635 ms

font-awesome.css

485 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 84% of them (59 requests) were addressed to the original Udc.or.jp, 6% (4 requests) were made to Platform.twitter.com and 3% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Udc.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 146.6 kB (9%)

Content Size

1.7 MB

After Optimization

1.5 MB

In fact, the total size of Udc.or.jp main page is 1.7 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. 55% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 113.2 kB

  • Original 138.5 kB
  • After minification 136.8 kB
  • After compression 25.3 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. 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 113.2 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 6.6 kB

  • Original 1.3 MB
  • After minification 1.3 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. Udc images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 14.5 kB

  • Original 176.1 kB
  • After minification 176.1 kB
  • After compression 161.6 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

-20%

Potential reduce by 12.2 kB

  • Original 62.3 kB
  • After minification 62.2 kB
  • After compression 50.1 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. Udc.or.jp needs all CSS files to be minified and compressed as it can save up to 12.2 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (61%)

Requests Now

67

After Optimization

26

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Udc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

udc.or.jp accessibility score

84

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

udc.or.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

udc.or.jp SEO score

70

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