Tools & Wizards About Us
killersudokuonline.com screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    86% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

killersudokuonline.com

Welcome to Killer Sudoku Online

Page Load Speed

1.6 sec in total

First Response

130 ms

Resources Loaded

1.3 sec

Page Rendered

204 ms

killersudokuonline.com screenshot

About Website

Click here to check amazing Killer Sudoku Online content for United States. Otherwise, check out these important facts you probably never knew about killersudokuonline.com

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Key Findings

We analyzed Killersudokuonline.com page load time and found that the first response time was 130 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

killersudokuonline.com performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

70/100

25%

SI (Speed Index)

Value3.7 s

85/100

10%

TBT (Total Blocking Time)

Value210 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

Network Requests Diagram

killersudokuonline.com

130 ms

killersudokuonline.com

225 ms

www.killersudokuonline.com

237 ms

kso.css

54 ms

pubcode.min.js

124 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 75% of them (24 requests) were addressed to the original Killersudokuonline.com, 9% (3 requests) were made to Pagead2.googlesyndication.com and 6% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (367 ms) relates to the external source Pagead2.googlesyndication.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 363.3 kB (48%)

Content Size

749.6 kB

After Optimization

386.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Killersudokuonline.com main page is 749.6 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. 20% of websites need less resources to load. Javascripts take 611.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 12.1 kB

  • Original 16.4 kB
  • After minification 15.1 kB
  • After compression 4.2 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 12.1 kB or 74% of the original size.

Image Optimization

-7%

Potential reduce by 8.6 kB

  • Original 120.6 kB
  • After minification 112.0 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. Killer Sudoku Online images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 341.9 kB

  • Original 611.0 kB
  • After minification 611.0 kB
  • After compression 269.1 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 341.9 kB or 56% of the original size.

CSS Optimization

-34%

Potential reduce by 558 B

  • Original 1.6 kB
  • After minification 1.6 kB
  • After compression 1.1 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. Killersudokuonline.com needs all CSS files to be minified and compressed as it can save up to 558 B or 34% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (14%)

Requests Now

28

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Killer Sudoku Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

killersudokuonline.com

killersudokuonline.com

130 ms

killersudokuonline.com

killersudokuonline.com

225 ms

www.killersudokuonline.com

www.killersudokuonline.com

237 ms

kso.css

kso.css

54 ms

pubcode.min.js

pubcode.min.js

124 ms

show_ads.js

show_ads.js

103 ms

ga.js

ga.js

29 ms

gen_7-129.gif

gen_7-129.gif

53 ms

kso-banner-left.png

kso-banner-left.png

109 ms

kso-banner-middle.png

kso-banner-middle.png

159 ms

kso-banner-right.png

kso-banner-right.png

162 ms

puzzle-D2jporb6700.gif

puzzle-D2jporb6700.gif

162 ms

puzzle-W3taikf6694.gif

puzzle-W3taikf6694.gif

160 ms

puzzle-GD3tq87v6700.gif

puzzle-GD3tq87v6700.gif

159 ms

puzzle-GW49qbs86694.gif

puzzle-GW49qbs86694.gif

160 ms

puzzle-GKW58qb7m6694.gif

puzzle-GKW58qb7m6694.gif

210 ms

welcome-index.gif

welcome-index.gif

211 ms

play-online-index.gif

play-online-index.gif

211 ms

rules-index.gif

rules-index.gif

213 ms

tips-index.gif

tips-index.gif

213 ms

archives-index.gif

archives-index.gif

213 ms

shop.gif

shop.gif

263 ms

syndicate-index.gif

syndicate-index.gif

263 ms

iphone-index.gif

iphone-index.gif

266 ms

email-index.gif

email-index.gif

267 ms

KSAd2.png

KSAd2.png

267 ms

__utm.gif

__utm.gif

13 ms

get.media

get.media

48 ms

468x60_default.jpg

468x60_default.jpg

42 ms

adsbygoogle.js

adsbygoogle.js

96 ms

bar.png

bar.png

134 ms

show_ads_impl.js

show_ads_impl.js

367 ms

Accessibility Review

killersudokuonline.com accessibility score

81

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

killersudokuonline.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

killersudokuonline.com SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Killersudokuonline.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Killersudokuonline.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

killersudokuonline.com

Open Graph description is not detected on the main page of Killer Sudoku Online. 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: