Tools & Wizards About Us
canvas.ws screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

canvas.ws

CANVAS | 遊びと学びのヒミツ基地

Page Load Speed

66.9 sec in total

First Response

4.7 sec

Resources Loaded

61.5 sec

Page Rendered

717 ms

canvas.ws screenshot

About Website

Welcome to canvas.ws homepage info - get ready to check CANVAS best content for Japan right away, or after learning these important things about canvas.ws

CANVAS（キャンバス）は、こどもたちの創造・表現力をテーマにしたワークショップ・イベント、セミナーを多数、企画・開催しているNPOです。

Visit canvas.ws

Key Findings

We analyzed Canvas.ws page load time and found that the first response time was 4.7 sec and then it took 62.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

canvas.ws performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.0 s

0/100

25%

SI (Speed Index)

Value28.8 s

0/100

10%

TBT (Total Blocking Time)

Value2,220 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value28.0 s

0/100

10%

Network Requests Diagram

canvas.ws

4709 ms

style.css

705 ms

jquery.js

1083 ms

share.js

742 ms

jquery.bxslider.js

1080 ms

Our browser made a total of 137 requests to load all elements on the main page. We found that 93% of them (128 requests) were addressed to the original Canvas.ws, 1% (2 requests) were made to Ssl.google-analytics.com and 1% (2 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (4.7 sec) belongs to the original domain Canvas.ws.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (17%)

Content Size

6.2 MB

After Optimization

5.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Canvas.ws main page is 6.2 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 5.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 574.2 kB

  • Original 681.3 kB
  • After minification 637.3 kB
  • After compression 107.1 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 574.2 kB or 84% of the original size.

Image Optimization

-2%

Potential reduce by 111.9 kB

  • Original 5.0 MB
  • After minification 4.8 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. CANVAS images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 274.9 kB

  • Original 383.2 kB
  • After minification 323.5 kB
  • After compression 108.3 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 274.9 kB or 72% of the original size.

CSS Optimization

-85%

Potential reduce by 116.2 kB

  • Original 136.5 kB
  • After minification 104.5 kB
  • After compression 20.2 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. Canvas.ws needs all CSS files to be minified and compressed as it can save up to 116.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (24%)

Requests Now

135

After Optimization

102

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CANVAS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

canvas.ws

canvas.ws

4709 ms

style.css

style.css

705 ms

jquery.js

jquery.js

1083 ms

share.js

share.js

742 ms

jquery.bxslider.js

jquery.bxslider.js

1080 ms

jquery.freetile.min.js

jquery.freetile.min.js

697 ms

jQueryAutoHeight.js

jQueryAutoHeight.js

876 ms

jquery.highlight.js

jquery.highlight.js

873 ms

jquery.fancybox.js

jquery.fancybox.js

1089 ms

jquery.carouFredSel.js

jquery.carouFredSel.js

1215 ms

common.js

common.js

1074 ms

smoothScroll.js

smoothScroll.js

1251 ms

ga.js

ga.js

1250 ms

se-styles.css

se-styles.css

1264 ms

default.css

default.css

570 ms

common.css

common.css

700 ms

style.css

style.css

720 ms

jquery.bxslider.css

jquery.bxslider.css

724 ms

workshop.css

workshop.css

734 ms

magazine.css

magazine.css

740 ms

magazine-article.css

magazine-article.css

886 ms

project.css

project.css

898 ms

news.css

news.css

909 ms

player.css

player.css

904 ms

about.css

about.css

915 ms

other.css

other.css

1074 ms

kidsday.css

kidsday.css

1080 ms

jquery.mCustomScrollbar.css

jquery.mCustomScrollbar.css

827 ms

jquery.mCustomScrollbar.min.js

jquery.mCustomScrollbar.min.js

960 ms

jquery.mousewheel.js

jquery.mousewheel.js

863 ms

ga.js

ga.js

153 ms

widgets.js

widgets.js

135 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

421 ms

logo.png

logo.png

419 ms

h-icon-1.png

h-icon-1.png

418 ms

h-icon-2.png

h-icon-2.png

419 ms

h-icon-3.png

h-icon-3.png

417 ms

h-icon-pickup.png

h-icon-pickup.png

418 ms

h-icon-4.png

h-icon-4.png

829 ms

h-icon-5.png

h-icon-5.png

830 ms

h-icon-6.png

h-icon-6.png

830 ms

nav1.png

nav1.png

830 ms

nav2.png

nav2.png

832 ms

nav3.png

nav3.png

831 ms

nav4.png

nav4.png

832 ms

nav5.png

nav5.png

834 ms

nav6.png

nav6.png

834 ms

3_sc2024_bunner.png

3_sc2024_bunner.png

1447 ms

ca_DEA2024_openbunner.png

ca_DEA2024_openbunner.png

1285 ms

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

1477 ms

top.jpg

top.jpg

938 ms

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

1625 ms

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

CANVAS%E3%83%88%E3%83%83%E3%83%97.jpg

1271 ms

csforall1200.jpg

csforall1200.jpg

1157 ms

banner.jpg

banner.jpg

1334 ms

baner_top.jpg

baner_top.jpg

1799 ms

magazine_head.jpg

magazine_head.jpg

1639 ms

info-ttl.png

info-ttl.png

1513 ms

info-ttl-tolist.png

info-ttl-tolist.png

1626 ms

entrancebaner1.jpg

entrancebaner1.jpg

1663 ms

entrancebaner.jpg

entrancebaner.jpg

1690 ms

entrancebaner3.jpg

entrancebaner3.jpg

1799 ms

sdgs_logo-270x180.png

sdgs_logo-270x180.png

1809 ms

1_R-270x180.jpg

1_R-270x180.jpg

1819 ms

mirai-270x180.jpg

mirai-270x180.jpg

1846 ms

sdk.js

sdk.js

132 ms

kodomo-270x180.jpg

kodomo-270x180.jpg

1831 ms

%E3%82%A2%E3%83%BC%E3%83%88%E3%83%9C%E3%83%BC%E3%83%89-1Peatix-270x180.png

%E3%82%A2%E3%83%BC%E3%83%88%E3%83%9C%E3%83%BC%E3%83%89-1Peatix-270x180.png

1876 ms

__utm.gif

__utm.gif

278 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

687 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

423 ms

sdk.js

sdk.js

396 ms

%E3%82%A2%E3%83%BC%E3%83%88%E3%83%9C%E3%83%BC%E3%83%89-1@4x1-270x180.png

%E3%82%A2%E3%83%BC%E3%83%88%E3%83%9C%E3%83%BC%E3%83%89-1@4x1-270x180.png

1567 ms

workshop1-270x180.jpg

workshop1-270x180.jpg

1576 ms

IMG_5736-270x180.jpg

IMG_5736-270x180.jpg

1587 ms

workshop-270x180.jpg

workshop-270x180.jpg

1613 ms

1-270x180.png

1-270x180.png

1628 ms

kenkyujo-270x180.jpg

kenkyujo-270x180.jpg

1740 ms

nanako.ishido2-270x180.jpg

nanako.ishido2-270x180.jpg

1378 ms

settings

settings

98 ms

2-270x180.jpg

2-270x180.jpg

1351 ms

11-270x180.jpg

11-270x180.jpg

1353 ms

DSC_0117-270x180.jpg

DSC_0117-270x180.jpg

1385 ms

kamisu03-270x180.jpg

kamisu03-270x180.jpg

1394 ms

index-btm-1.png

index-btm-1.png

1505 ms

index-btm-2.png

index-btm-2.png

1519 ms

index-btm-3.png

index-btm-3.png

1518 ms

index-btm-4.png

index-btm-4.png

1521 ms

59 ms

index-cnt-1-ttl.png

index-cnt-1-ttl.png

1529 ms

index-cnt-1-txt.png

index-cnt-1-txt.png

1457 ms

wsc1.jpg

wsc1.jpg

1354 ms

project2-270x180.jpg

project2-270x180.jpg

1260 ms

kidsday2-270x180.jpg

kidsday2-270x180.jpg

1259 ms

knock-270x180.jpg

knock-270x180.jpg

1211 ms

peg1-270x180.jpg

peg1-270x180.jpg

1112 ms

hougagogo-270x180.jpg

hougagogo-270x180.jpg

1112 ms

fair-270x180.jpg

fair-270x180.jpg

1176 ms

index-cnt-2-ttl.png

index-cnt-2-ttl.png

1087 ms

info-more-btn.png

info-more-btn.png

1087 ms

index-cnt-2-txt.png

index-cnt-2-txt.png

1076 ms

index-cnt-3-ttl.png

index-cnt-3-ttl.png

1085 ms

indexbnr-1.jpg

indexbnr-1.jpg

1073 ms

indexbnr-2.jpg

indexbnr-2.jpg

1074 ms

indexbnr-4.jpg

indexbnr-4.jpg

1092 ms

banerbox.jpg

banerbox.jpg

1085 ms

recruit.png

recruit.png

1075 ms

indexbnr-3.jpg

indexbnr-3.jpg

1091 ms

program.png

program.png

1077 ms

10notsukuru.png

10notsukuru.png

1089 ms

CANVAS%E3%83%88%E3%83%83%E3%83%97%E6%AD%A3%E6%96%B9%E5%BD%A2.jpg

CANVAS%E3%83%88%E3%83%83%E3%83%97%E6%AD%A3%E6%96%B9%E5%BD%A2.jpg

1124 ms

10th.jpg

10th.jpg

1122 ms

01_3.jpg

01_3.jpg

1079 ms

degital1.jpg

degital1.jpg

1090 ms

yomikaki1.jpg

yomikaki1.jpg

1077 ms

ikikata1.jpg

ikikata1.jpg

1078 ms

book3.jpg

book3.jpg

1081 ms

book4.jpg

book4.jpg

1098 ms

totop.png

totop.png

1109 ms

info-popup-ttl.png

info-popup-ttl.png

1081 ms

info-popup-close.png

info-popup-close.png

1068 ms

ft-logo.png

ft-logo.png

1079 ms

ft-sm-ttl1.png

ft-sm-ttl1.png

1081 ms

ft-sm-ttl5.png

ft-sm-ttl5.png

1097 ms

ft-sm-ttl2.png

ft-sm-ttl2.png

1109 ms

ft-sm-ttl3.png

ft-sm-ttl3.png

1073 ms

ft-sm-ttl4.png

ft-sm-ttl4.png

1077 ms

ft-sm-ttl6.png

ft-sm-ttl6.png

1088 ms

ft-img.jpg

ft-img.jpg

1078 ms

ft-info-ttl.png

ft-info-ttl.png

1075 ms

ws-post-btn.png

ws-post-btn.png

1089 ms

contact-btn.png

contact-btn.png

1067 ms

wrp-bg-line.gif

wrp-bg-line.gif

1059 ms

bg-info-bottom-line.gif

bg-info-bottom-line.gif

1085 ms

index-serach-enter.png

index-serach-enter.png

1071 ms

overlay.png

overlay.png

1083 ms

indexbnr-5.jpg

indexbnr-5.jpg

0 ms

Accessibility Review

canvas.ws accessibility score

79

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

canvas.ws 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

canvas.ws SEO score

82

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Canvas.ws can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Japanese. Our system also found out that Canvas.ws 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

canvas.ws

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