Tools & Wizards About Us
celtachina.com screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

celtachina.com

Language Link China |Cambridge CELTA,YL to CELTA, Online CELTA course in China Beijing and Shanghai

Page Load Speed

7.9 sec in total

First Response

940 ms

Resources Loaded

6.9 sec

Page Rendered

134 ms

celtachina.com screenshot

About Website

Visit celtachina.com now to see the best up-to-date CELTA China content and also check out these interesting facts you probably never knew about celtachina.com

Language Link China CELTA,Online CELTA,TEFL Teacher Training in Beijing and Shanghai China, Cambridge CELTA the best TEFL,TESOL course in China

Visit celtachina.com

Key Findings

We analyzed Celtachina.com page load time and found that the first response time was 940 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

celtachina.com performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.152

75/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

celtachina.com

940 ms

style.css

656 ms

AC_RunActiveContent.js

716 ms

nav.js

461 ms

jsapi

8 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 85% of them (45 requests) were addressed to the original Celtachina.com, 6% (3 requests) were made to Hm.baidu.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Hm.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 25.2 kB (5%)

Content Size

508.7 kB

After Optimization

483.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Celtachina.com main page is 508.7 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. Images take 439.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 17.7 kB

  • Original 22.7 kB
  • After minification 19.4 kB
  • After compression 5.0 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. This page needs HTML code to be minified as it can gain 3.3 kB, which is 14% 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 17.7 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 3.9 kB

  • Original 439.6 kB
  • After minification 435.7 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. CELTA China images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 2.2 kB

  • Original 41.1 kB
  • After minification 41.1 kB
  • After compression 38.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-26%

Potential reduce by 1.4 kB

  • Original 5.3 kB
  • After minification 5.3 kB
  • After compression 4.0 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. Celtachina.com needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (54%)

Requests Now

50

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CELTA China. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

celtachina.com

celtachina.com

940 ms

style.css

style.css

656 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

716 ms

nav.js

nav.js

461 ms

jsapi

jsapi

8 ms

index.js

index.js

277 ms

loader.js

loader.js

26 ms

nav_top.gif

nav_top.gif

240 ms

nav_top2.gif

nav_top2.gif

251 ms

logo.jpg

logo.jpg

231 ms

certificate.jpg

certificate.jpg

740 ms

nav_left.jpg

nav_left.jpg

448 ms

nav_title_01.png

nav_title_01.png

473 ms

nav_bg.jpg

nav_bg.jpg

475 ms

nav_title_02.png

nav_title_02.png

473 ms

nav_title_03.png

nav_title_03.png

474 ms

nav_title_04.png

nav_title_04.png

662 ms

nav_title_05.png

nav_title_05.png

712 ms

nav_title_06.png

nav_title_06.png

706 ms

nav_title_07.png

nav_title_07.png

698 ms

nav_right.jpg

nav_right.jpg

717 ms

nav_title_08.png

nav_title_08.png

877 ms

ban1.jpg

ban1.jpg

1622 ms

ban2.jpg

ban2.jpg

1822 ms

ban3.jpg

ban3.jpg

1998 ms

c_video.jpg

c_video.jpg

967 ms

c_feed.jpg

c_feed.jpg

1029 ms

img1.jpg

img1.jpg

1319 ms

img2.jpg

img2.jpg

1700 ms

img3.jpg

img3.jpg

1856 ms

banner_bg.png

banner_bg.png

1560 ms

icon_left.gif

icon_left.gif

1810 ms

icon_right.gif

icon_right.gif

1830 ms

c_bg.jpg

c_bg.jpg

1914 ms

c_bg2.jpg

c_bg2.jpg

1994 ms

c_more.jpg

c_more.jpg

1991 ms

ico_left.png

ico_left.png

2017 ms

ico_right.png

ico_right.png

2032 ms

news_bg.jpg

news_bg.jpg

2119 ms

news_left.jpg

news_left.jpg

2172 ms

news_right.jpg

news_right.jpg

2205 ms

c_bg3.jpg

c_bg3.jpg

2225 ms

bot_left.jpg

bot_left.jpg

2239 ms

h.js

h.js

668 ms

ga.js

ga.js

10 ms

__utm.gif

__utm.gif

13 ms

h.js

h.js

3068 ms

21.gif

21.gif

1616 ms

bot_right.jpg

bot_right.jpg

517 ms

icon3.png

icon3.png

503 ms

web_top.gif

web_top.gif

498 ms

web_bot.gif

web_bot.gif

519 ms

hm.gif

hm.gif

516 ms

Accessibility Review

celtachina.com accessibility score

54

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.

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

celtachina.com best practices score

67

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

SEO Factors

celtachina.com SEO score

58

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Celtachina.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 Celtachina.com main page’s claimed encoding is gb2312. 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

celtachina.com

Open Graph description is not detected on the main page of CELTA China. 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: