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ef.cn screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

Page Load Speed

5 sec in total

First Response

1.7 sec

Resources Loaded

2.8 sec

Page Rendered

428 ms

ef.cn screenshot

About Website

Welcome to ef.cn homepage info - get ready to check Ef best content for China right away, or after learning these important things about ef.cn

Visit ef.cn

Key Findings

We analyzed Ef.cn page load time and found that the first response time was 1.7 sec and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

ef.cn performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value19.2 s

0/100

25%

SI (Speed Index)

Value17.3 s

0/100

10%

TBT (Total Blocking Time)

Value1,090 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value34.4 s

0/100

10%

Network Requests Diagram

ef.cn

1701 ms

323 ms

clientlibrarymanager.min.js

30 ms

clientlibs.min.css

53 ms

clientlibs.min.css

44 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Ef.cn, 39% (19 requests) were made to Et.ef-cdn.com and 35% (17 requests) were made to Et1.ef-cdn.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Ef.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 960.0 kB (61%)

Content Size

1.6 MB

After Optimization

621.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ef.cn main page is 1.6 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. 65% of websites need less resources to load. Javascripts take 909.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 110.5 kB

  • Original 128.6 kB
  • After minification 127.4 kB
  • After compression 18.2 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 110.5 kB or 86% of the original size.

Image Optimization

-6%

Potential reduce by 17.4 kB

  • Original 292.5 kB
  • After minification 275.2 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. Ef images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 626.3 kB

  • Original 909.8 kB
  • After minification 902.4 kB
  • After compression 283.5 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 626.3 kB or 69% of the original size.

CSS Optimization

-82%

Potential reduce by 205.9 kB

  • Original 250.7 kB
  • After minification 248.1 kB
  • After compression 44.9 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. Ef.cn needs all CSS files to be minified and compressed as it can save up to 205.9 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (73%)

Requests Now

45

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ef. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ef.cn

ef.cn

1701 ms

323 ms

clientlibrarymanager.min.js

clientlibrarymanager.min.js

30 ms

clientlibs.min.css

clientlibs.min.css

53 ms

clientlibs.min.css

clientlibs.min.css

44 ms

headlibs.min.js

headlibs.min.js

76 ms

headlibs.min.js

headlibs.min.js

41 ms

modernizr-2.6.2.min.js

modernizr-2.6.2.min.js

82 ms

us.en.min.css

us.en.min.css

40 ms

jquery.min.js

jquery.min.js

71 ms

utils.min.js

utils.min.js

27 ms

granite.min.js

granite.min.js

28 ms

jquery.min.js

jquery.min.js

43 ms

shared.min.js

shared.min.js

72 ms

underscore.min.js

underscore.min.js

79 ms

kernel.min.js

kernel.min.js

134 ms

salesphonenumber.min.css

salesphonenumber.min.css

70 ms

linkbutton.min.js

linkbutton.min.js

26 ms

background-picturefill.min.js

background-picturefill.min.js

46 ms

additional.min.css

additional.min.css

8 ms

spacer.min.css

spacer.min.css

34 ms

carousel.min.css

carousel.min.css

44 ms

picturefill.min.js

picturefill.min.js

36 ms

1454672736043.png

1454672736043.png

72 ms

1424694758011.png

1424694758011.png

72 ms

sprite.png

sprite.png

51 ms

main-bg.png

main-bg.png

127 ms

slider.min.css

slider.min.css

20 ms

slider.min.js

slider.min.js

26 ms

modal-form.min.css

modal-form.min.css

31 ms

youtubevideo.min.css

youtubevideo.min.css

31 ms

youtubevideo.min.js

youtubevideo.min.js

43 ms

modal.min.js

modal.min.js

45 ms

modal.min.css

modal.min.css

49 ms

modal.min.js

modal.min.js

54 ms

ActionPanel.min.js

ActionPanel.min.js

55 ms

trigger.min.js

trigger.min.js

55 ms

clientlibs.min.js

clientlibs.min.js

56 ms

clientlibs-embed-2013-amdmodule.min.js

clientlibs-embed-2013-amdmodule.min.js

53 ms

53 ms

1447768530136.png

1447768530136.png

105 ms

1447758502996.png

1447758502996.png

52 ms

1447758497512.png

1447758497512.png

104 ms

1440528811057.png

1440528811057.png

103 ms

Background-Footer-CTA-1170x558.jpg

Background-Footer-CTA-1170x558.jpg

67 ms

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1 ms

RobotoCondensed-Bold-webfont.woff

RobotoCondensed-Bold-webfont.woff

379 ms

standalone.min.js

standalone.min.js

337 ms

bundle.js

bundle.js

126 ms

Accessibility Review

ef.cn accessibility score

72

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

ef.cn 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

ef.cn SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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

    ZH

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

ef.cn

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