Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

numberplace.net

ナンプレ20 - 無料数独問題集

Page Load Speed

11.3 sec in total

First Response

625 ms

Resources Loaded

10.1 sec

Page Rendered

599 ms

numberplace.net screenshot

About Website

Click here to check amazing Numberplace content for Japan. Otherwise, check out these important facts you probably never knew about numberplace.net

毎日20問、無料でナンプレ(数独)をブラウザでオンラインプレイできます。面倒なダウンロード・インストールや登録は一切不要です。

Visit numberplace.net

Key Findings

We analyzed Numberplace.net page load time and found that the first response time was 625 ms and then it took 10.7 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

numberplace.net performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

52/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value1,470 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value17.7 s

4/100

10%

Network Requests Diagram

numberplace.net

625 ms

ga.js

39 ms

inner_link.js

146 ms

all.js

286 ms

bkpn.png

147 ms

Our browser made a total of 241 requests to load all elements on the main page. We found that 4% of them (10 requests) were addressed to the original Numberplace.net, 10% (25 requests) were made to Static.xx.fbcdn.net and 6% (15 requests) were made to Pbs.twimg.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Static.xx.fbcdn.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 115.4 kB (33%)

Content Size

352.9 kB

After Optimization

237.5 kB

In fact, the total size of Numberplace.net main page is 352.9 kB. 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 158.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 51.3 kB

  • Original 66.2 kB
  • After minification 65.0 kB
  • After compression 15.0 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 51.3 kB or 77% of the original size.

Image Optimization

-9%

Potential reduce by 14.4 kB

  • Original 158.0 kB
  • After minification 143.6 kB

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. Numberplace images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 49.8 kB

  • Original 128.7 kB
  • After minification 128.3 kB
  • After compression 78.9 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 49.8 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 153 (71%)

Requests Now

214

After Optimization

61

The browser has sent 214 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Numberplace. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 69 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

numberplace.net accessibility score

93

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

numberplace.net best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

numberplace.net SEO score

93

Search Engine Optimization Advices

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

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 Numberplace.net 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 Numberplace.net 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 Numberplace. 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: