Tools & Wizards About Us
atc-sim.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

atc-sim.com

ATC-SIM: a browser-based air traffic control simulator game

Page Load Speed

1.5 sec in total

First Response

67 ms

Resources Loaded

1.2 sec

Page Rendered

279 ms

atc-sim.com screenshot

About Website

Visit atc-sim.com now to see the best up-to-date ATC SIM content for India and also check out these interesting facts you probably never knew about atc-sim.com

ATC-SIM is a browser-based air traffic control simulator. Explore the other side of flight simulation!

Visit atc-sim.com

Key Findings

We analyzed Atc-sim.com page load time and found that the first response time was 67 ms and then it took 1.4 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

atc-sim.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value7.9 s

22/100

10%

TBT (Total Blocking Time)

Value1,780 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value20.3 s

2/100

10%

Network Requests Diagram

atc-sim.com

67 ms

atc-sim.com

118 ms

style.css

23 ms

sdk.js

23 ms

instructions.php

134 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 32% of them (19 requests) were addressed to the original Atc-sim.com, 35% (21 requests) were made to Static.xx.fbcdn.net and 8% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (436 ms) belongs to the original domain Atc-sim.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 58.1 kB (8%)

Content Size

740.2 kB

After Optimization

682.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Atc-sim.com main page is 740.2 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. Only a small number of websites need less resources to load. Javascripts take 355.5 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 24.5 kB

  • Original 31.7 kB
  • After minification 31.4 kB
  • After compression 7.2 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 24.5 kB or 77% of the original size.

Image Optimization

-0%

Potential reduce by 739 B

  • Original 287.5 kB
  • After minification 286.8 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. ATC SIM images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 32.2 kB

  • Original 355.5 kB
  • After minification 355.2 kB
  • After compression 323.3 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 676 B

  • Original 65.5 kB
  • After minification 65.5 kB
  • After compression 64.8 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. Atc-sim.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 38 (69%)

Requests Now

55

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ATC SIM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

atc-sim.com

atc-sim.com

67 ms

atc-sim.com

atc-sim.com

118 ms

style.css

style.css

23 ms

sdk.js

sdk.js

23 ms

instructions.php

instructions.php

134 ms

WkoCAm_rdSM

WkoCAm_rdSM

135 ms

in.js

in.js

63 ms

atc_header24.jpg

atc_header24.jpg

162 ms

clouds.jpg

clouds.jpg

436 ms

headerbar.jpg

headerbar.jpg

434 ms

titlebarbg.png

titlebarbg.png

331 ms

titlebar.jpg

titlebar.jpg

157 ms

selectarrow.png

selectarrow.png

435 ms

sprite-radiobutton.png

sprite-radiobutton.png

435 ms

menubarbg.gif

menubarbg.gif

436 ms

sdk.js

sdk.js

9 ms

99 ms

mapscaleH.gif

mapscaleH.gif

346 ms

mapscaleV.gif

mapscaleV.gif

346 ms

mapscaleC.gif

mapscaleC.gif

346 ms

style.css

style.css

342 ms

sample_departure.gif

sample_departure.gif

339 ms

sample_arrival.gif

sample_arrival.gif

340 ms

sample_fdd.gif

sample_fdd.gif

346 ms

www-player.css

www-player.css

5 ms

www-embed-player.js

www-embed-player.js

29 ms

base.js

base.js

56 ms

page.php

page.php

341 ms

ad_status.js

ad_status.js

177 ms

FollowCompany.js

FollowCompany.js

175 ms

LvMrC3vzHFP8SzxjvqNWRksbkOPiJTf11ILX4Pq8Ybc.js

LvMrC3vzHFP8SzxjvqNWRksbkOPiJTf11ILX4Pq8Ybc.js

127 ms

embed.js

embed.js

53 ms

0LGwUiGbgMw.css

0LGwUiGbgMw.css

65 ms

lhzi7nlXu3o.css

lhzi7nlXu3o.css

72 ms

p-VnG8HsjVt.css

p-VnG8HsjVt.css

194 ms

Aq3fWRqzWdY.js

Aq3fWRqzWdY.js

199 ms

fK8r0SIEGvt.js

fK8r0SIEGvt.js

191 ms

7CmGfGBVS6H.js

7CmGfGBVS6H.js

192 ms

pkbS1qk0XD9.js

pkbS1qk0XD9.js

197 ms

p55HfXW__mM.js

p55HfXW__mM.js

195 ms

G95XClHFDrT.js

G95XClHFDrT.js

196 ms

jUHPFyzjzqD.js

jUHPFyzjzqD.js

198 ms

-I0me8tJcSQ.js

-I0me8tJcSQ.js

237 ms

4Za9TE_Wiy4.js

4Za9TE_Wiy4.js

197 ms

fG8M15IVi1H.js

fG8M15IVi1H.js

242 ms

CkL1MBePXJW.js

CkL1MBePXJW.js

236 ms

jMnZJ8wclF3.js

jMnZJ8wclF3.js

241 ms

HzxD9aAXSyD.js

HzxD9aAXSyD.js

250 ms

teTZ2tZqwkq.js

teTZ2tZqwkq.js

252 ms

qnn7MVQZYOT.js

qnn7MVQZYOT.js

252 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

40 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

154 ms

id

id

25 ms

Create

Create

209 ms

275789112_2056269987866350_6663260708923509759_n.jpg

275789112_2056269987866350_6663260708923509759_n.jpg

215 ms

305310163_583768903245143_1886748870695747601_n.jpg

305310163_583768903245143_1886748870695747601_n.jpg

146 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

96 ms

kCwDvxe1QsQ.js

kCwDvxe1QsQ.js

5 ms

7mzhNKqWkDi.js

7mzhNKqWkDi.js

7 ms

GenerateIT

GenerateIT

30 ms

Accessibility Review

atc-sim.com accessibility score

93

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

<frame> or <iframe> elements do not have a title

Best Practices

atc-sim.com best practices score

75

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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

atc-sim.com SEO score

96

Search Engine Optimization Advices

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Atc-sim.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 Atc-sim.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

atc-sim.com

Open Graph description is not detected on the main page of ATC SIM. 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: