Tools & Wizards About Us
51kl.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

51kl.com

Naruto Slugfest X - Ninja Battles on your Fingertip

Page Load Speed

47 sec in total

First Response

9.1 sec

Resources Loaded

37.4 sec

Page Rendered

469 ms

51kl.com screenshot

About Website

Welcome to 51kl.com homepage info - get ready to check 51 Kl best content for China right away, or after learning these important things about 51kl.com

Download Now! A game for every Naruto Fan! Naruto Duel is an Action RPG based on the Naruto Anime Series, featuring an HD Konoha village and a 3D open Naruto world. Assemble a Ninja team and relive ev...

Visit 51kl.com

Key Findings

We analyzed 51kl.com page load time and found that the first response time was 9.1 sec and then it took 37.9 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 were 7 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

51kl.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value14.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value20.3 s

0/100

25%

SI (Speed Index)

Value18.0 s

0/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.985

2/100

15%

TTI (Time to Interactive)

Value14.3 s

9/100

10%

Network Requests Diagram

www.51kl.com

9142 ms

css.php

3247 ms

js.php

9013 ms

js.php

7448 ms

jquery.flexslider-min.js

5746 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original 51kl.com, 77% (37 requests) were made to Static.51kl.com and 6% (3 requests) were made to Combo.b.qq.com. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Static.51kl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 306.2 kB (46%)

Content Size

672.3 kB

After Optimization

366.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 51kl.com main page is 672.3 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. 25% of websites need less resources to load. Images take 385.9 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 167.6 kB

  • Original 190.1 kB
  • After minification 121.2 kB
  • After compression 22.6 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. This page needs HTML code to be minified as it can gain 69.0 kB, which is 36% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 167.6 kB or 88% of the original size.

Image Optimization

-29%

Potential reduce by 111.8 kB

  • Original 385.9 kB
  • After minification 274.1 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. Obviously, 51 Kl needs image optimization as it can save up to 111.8 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-25%

Potential reduce by 22.6 kB

  • Original 90.5 kB
  • After minification 90.5 kB
  • After compression 67.9 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 22.6 kB or 25% of the original size.

CSS Optimization

-76%

Potential reduce by 4.4 kB

  • Original 5.8 kB
  • After minification 5.3 kB
  • After compression 1.4 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. 51kl.com needs all CSS files to be minified and compressed as it can save up to 4.4 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (23%)

Requests Now

40

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Kl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.51kl.com

www.51kl.com

9142 ms

css.php

css.php

3247 ms

js.php

js.php

9013 ms

js.php

js.php

7448 ms

jquery.flexslider-min.js

jquery.flexslider-min.js

5746 ms

wpa.php

wpa.php

923 ms

layer.css

layer.css

578 ms

xubox_ico0.png

xubox_ico0.png

13111 ms

ewm-close.png

ewm-close.png

13883 ms

loadApp.png

loadApp.png

15138 ms

51kl_logo.jpg

51kl_logo.jpg

500 ms

subscribe.png

subscribe.png

2333 ms

weixin_logo.jpg

weixin_logo.jpg

1132 ms

up.jpg

up.jpg

3341 ms

top_bg_city.png

top_bg_city.png

2128 ms

top_bg_city_abbr.png

top_bg_city_abbr.png

4337 ms

logo-201506.png

logo-201506.png

7233 ms

hot.png

hot.png

6495 ms

search_ico.png

search_ico.png

6834 ms

142910127320.jpg

142910127320.jpg

14322 ms

hascheck.png

hascheck.png

14399 ms

telephone.png

telephone.png

8421 ms

nocheck.png

nocheck.png

11789 ms

75f75093d2d7a44243c42bf8d36a1058.jpg

75f75093d2d7a44243c42bf8d36a1058.jpg

13775 ms

default_com.gif

default_com.gif

13683 ms

1453686120962.jpg

1453686120962.jpg

19795 ms

c1f4b8d47c23f6bc048fcb06ed5188aa.jpg

c1f4b8d47c23f6bc048fcb06ed5188aa.jpg

14669 ms

1453686240218.jpg

1453686240218.jpg

17044 ms

header-nav-c.jpg

header-nav-c.jpg

14830 ms

loading.gif

loading.gif

14853 ms

1453685449545.jpg

1453685449545.jpg

17486 ms

1453685704729.jpg

1453685704729.jpg

19737 ms

1453685782876.jpg

1453685782876.jpg

19736 ms

1453685959705.jpg

1453685959705.jpg

19736 ms

all_ico.png

all_ico.png

19732 ms

pos_pic.png

pos_pic.png

18244 ms

zs6.png

zs6.png

19593 ms

zs17.png

zs17.png

19561 ms

h.js

h.js

1093 ms

21.gif

21.gif

871 ms

hm.gif

hm.gif

787 ms

dot.png

dot.png

19368 ms

Panel.js

Panel.js

881 ms

localStorage.js

localStorage.js

2735 ms

contains.js

contains.js

322 ms

r.cgi

r.cgi

1156 ms

crmqq.php

crmqq.php

16216 ms

wpa_first_heart_beat.php

wpa_first_heart_beat.php

793 ms

Accessibility Review

51kl.com accessibility score

52

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

51kl.com 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

51kl.com SEO score

83

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

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51kl.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Chinese language. Our system also found out that 51kl.com 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

51kl.com

Open Graph description is not detected on the main page of 51 Kl. 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: