Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% 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

13.8 sec in total

First Response

2.5 sec

Resources Loaded

10.4 sec

Page Rendered

925 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 2.5 sec and then it took 11.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

canvas.ws performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value18.0 s

0/100

25%

SI (Speed Index)

Value25.2 s

0/100

10%

TBT (Total Blocking Time)

Value2,850 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value25.0 s

0/100

10%

Network Requests Diagram

canvas.ws

2501 ms

style.css

354 ms

jquery.js

884 ms

share.js

368 ms

jquery.bxslider.js

732 ms

Our browser made a total of 142 requests to load all elements on the main page. We found that 94% of them (134 requests) were addressed to the original Canvas.ws, 1% (2 requests) were made to Google-analytics.com and 1% (2 requests) were made to Staticxx.facebook.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Canvas.ws.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (16%)

Content Size

6.6 MB

After Optimization

5.5 MB

In fact, the total size of Canvas.ws main page is 6.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.7 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 218.9 kB

  • Original 265.1 kB
  • After minification 247.4 kB
  • After compression 46.2 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 218.9 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 352.8 kB

  • Original 5.7 MB
  • After minification 5.3 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. CANVAS images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 342.8 kB

  • Original 488.8 kB
  • After minification 429.0 kB
  • After compression 146.0 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 342.8 kB or 70% of the original size.

CSS Optimization

-85%

Potential reduce by 116.8 kB

  • Original 137.4 kB
  • After minification 105.2 kB
  • After compression 20.6 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 116.8 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (25%)

Requests Now

141

After Optimization

106

The browser has sent 141 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 20 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

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

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

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

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: