Tools & Wizards About Us
air-class.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

air-class.com

Online Tutoring - Choose from the BEST TUTORS | AirClass 1ON1

Page Load Speed

3.9 sec in total

First Response

797 ms

Resources Loaded

3 sec

Page Rendered

60 ms

air-class.com screenshot

About Website

Click here to check amazing Air Class content for India. Otherwise, check out these important facts you probably never knew about air-class.com

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Key Findings

We analyzed Air-class.com page load time and found that the first response time was 797 ms and then it took 3.1 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

air-class.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value44.6 s

0/100

25%

SI (Speed Index)

Value18.7 s

0/100

10%

TBT (Total Blocking Time)

Value4,950 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value43.0 s

0/100

10%

Network Requests Diagram

air-class.com

797 ms

gtm.js

86 ms

iconfont.css

578 ms

app.203a52f2.css

640 ms

dll-769c3914.js

695 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Air-class.com, 67% (39 requests) were made to Googletagmanager.com and 5% (3 requests) were made to T.zmlearn.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Gosspublic.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.4 kB (5%)

Content Size

392.5 kB

After Optimization

371.1 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Air-class.com main page is 392.5 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 354.0 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 20.6 kB

  • Original 26.3 kB
  • After minification 26.3 kB
  • After compression 5.7 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 20.6 kB or 78% of the original size.

JavaScript Optimization

-0%

Potential reduce by 659 B

  • Original 354.0 kB
  • After minification 354.0 kB
  • After compression 353.3 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

-1%

Potential reduce by 138 B

  • Original 12.2 kB
  • After minification 12.2 kB
  • After compression 12.0 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. Air-class.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 48 (86%)

Requests Now

56

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Air Class. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 49 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

air-class.com

air-class.com

797 ms

gtm.js

gtm.js

86 ms

iconfont.css

iconfont.css

578 ms

app.203a52f2.css

app.203a52f2.css

640 ms

dll-769c3914.js

dll-769c3914.js

695 ms

sdk.js

sdk.js

54 ms

zm-jssdk.js

zm-jssdk.js

893 ms

gt.js

gt.js

605 ms

js

js

94 ms

js

js

94 ms

js

js

99 ms

js

js

99 ms

js

js

98 ms

js

js

123 ms

js

js

115 ms

js

js

116 ms

js

js

130 ms

js

js

143 ms

js

js

142 ms

js

js

152 ms

js

js

153 ms

js

js

159 ms

js

js

165 ms

js

js

193 ms

196963X1674866.skimlinks.js

196963X1674866.skimlinks.js

54 ms

aliyun-oss-sdk-6.7.0.min.js

aliyun-oss-sdk-6.7.0.min.js

1325 ms

app.1042ac27.js

app.1042ac27.js

744 ms

js

js

173 ms

js

js

198 ms

js

js

199 ms

sdk.js

sdk.js

5 ms

fbevents.js

fbevents.js

393 ms

js

js

396 ms

js

js

396 ms

js

js

393 ms

js

js

396 ms

js

js

393 ms

js

js

392 ms

js

js

398 ms

js

js

400 ms

js

js

395 ms

js

js

397 ms

js

js

394 ms

js

js

397 ms

js

js

399 ms

js

js

401 ms

js

js

399 ms

js

js

401 ms

uwt.js

uwt.js

383 ms

px.gif

px.gif

710 ms

753 ms

px.gif

px.gif

707 ms

770 ms

js

js

657 ms

js

js

681 ms

js

js

680 ms

adsct

adsct

221 ms

adsct

adsct

230 ms

Accessibility Review

air-class.com accessibility score

69

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

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

air-class.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

air-class.com SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Air-class.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Air-class.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

air-class.com

Open Graph description is not detected on the main page of Air Class. 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: