Tools & Wizards About Us
onlinejudge.org screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    44% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

onlinejudge.org

Online Judge - Home

Page Load Speed

25.2 sec in total

First Response

320 ms

Resources Loaded

20 sec

Page Rendered

4.9 sec

onlinejudge.org screenshot

About Website

Visit onlinejudge.org now to see the best up-to-date Online Judge content for Egypt and also check out these interesting facts you probably never knew about onlinejudge.org

Online Judge

Visit onlinejudge.org

Key Findings

We analyzed Onlinejudge.org page load time and found that the first response time was 320 ms and then it took 24.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

onlinejudge.org performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value11.5 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value1,740 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value14.3 s

9/100

10%

Network Requests Diagram

onlinejudge.org

320 ms

uva.onlinejudge.org

787 ms

cookies.js

1138 ms

layout_3col_vlines.css

1461 ms

nav_vlist.css

1692 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Onlinejudge.org, 38% (21 requests) were made to Uva.onlinejudge.org and 18% (10 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (5.8 sec) relates to the external source Udebug.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 536.5 kB (45%)

Content Size

1.2 MB

After Optimization

666.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Onlinejudge.org main page is 1.2 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. 55% of websites need less resources to load. Javascripts take 799.8 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 19.4 kB

  • Original 27.0 kB
  • After minification 23.7 kB
  • After compression 7.5 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 3.2 kB, which is 12% 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 19.4 kB or 72% of the original size.

Image Optimization

-4%

Potential reduce by 12.9 kB

  • Original 353.4 kB
  • After minification 340.5 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. Online Judge images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 487.3 kB

  • Original 799.8 kB
  • After minification 795.8 kB
  • After compression 312.5 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 487.3 kB or 61% of the original size.

CSS Optimization

-75%

Potential reduce by 16.8 kB

  • Original 22.4 kB
  • After minification 17.6 kB
  • After compression 5.6 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. Onlinejudge.org needs all CSS files to be minified and compressed as it can save up to 16.8 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (54%)

Requests Now

52

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Online Judge. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

onlinejudge.org

onlinejudge.org

320 ms

uva.onlinejudge.org

uva.onlinejudge.org

787 ms

cookies.js

cookies.js

1138 ms

layout_3col_vlines.css

layout_3col_vlines.css

1461 ms

nav_vlist.css

nav_vlist.css

1692 ms

cookieconsent.latest.min.js

cookieconsent.latest.min.js

1617 ms

jquery.min.js

jquery.min.js

1592 ms

api.js

api.js

1569 ms

show_ads.js

show_ads.js

1586 ms

base.css

base.css

230 ms

J_base.css

J_base.css

242 ms

basemod.css

basemod.css

313 ms

basemod_vlines.css

basemod_vlines.css

314 ms

content.css

content.css

327 ms

print_003.css

print_003.css

392 ms

brand

brand

148 ms

recaptcha__en.js

recaptcha__en.js

1243 ms

udebug_logo_small.png

udebug_logo_small.png

5778 ms

1307050985_1524

1307050985_1524

679 ms

yaml_bg.gif

yaml_bg.gif

1060 ms

onlinejudgelogo2.png

onlinejudgelogo2.png

1058 ms

collaborators_uva.jpg

collaborators_uva.jpg

991 ms

collaborators_icpc.jpg

collaborators_icpc.jpg

1058 ms

funge_new.png

funge_new.png

1059 ms

collaborators_parque.jpg

collaborators_parque.jpg

990 ms

desafios_sp_150.jpg

desafios_sp_150.jpg

1084 ms

baps.png

baps.png

1083 ms

uvabanner640.png

uvabanner640.png

1523 ms

cp3_small.png

cp3_small.png

1305 ms

frombaylor_banner.png

frombaylor_banner.png

1083 ms

ca-pub-2439032012840386.js

ca-pub-2439032012840386.js

326 ms

zrt_lookup.html

zrt_lookup.html

4642 ms

show_ads_impl.js

show_ads_impl.js

1997 ms

googlelogo_lightgrey_46x16dp.png

googlelogo_lightgrey_46x16dp.png

1905 ms

ads

ads

1180 ms

osd.js

osd.js

877 ms

15451087607324094502

15451087607324094502

3469 ms

abg.js

abg.js

2689 ms

m_js_controller.js

m_js_controller.js

2688 ms

m_window_focus_non_hydra.js

m_window_focus_non_hydra.js

2689 ms

osd_listener.js

osd_listener.js

2687 ms

m_qs_click_protection.js

m_qs_click_protection.js

2610 ms

x_button_blue2.png

x_button_blue2.png

3184 ms

ads

ads

3020 ms

ga.js

ga.js

2439 ms

googlelogo_dark_color_84x28dp.png

googlelogo_dark_color_84x28dp.png

970 ms

s

s

1990 ms

iconx2-000000.png

iconx2-000000.png

3154 ms

Grocery_1_Apr_2017_728x90.gif

Grocery_1_Apr_2017_728x90.gif

3863 ms

d5qAyLYU.js

d5qAyLYU.js

1436 ms

cookie_push.html

cookie_push.html

2296 ms

transparent.png

transparent.png

1637 ms

__utm.gif

__utm.gif

313 ms

9im3l02I.html

9im3l02I.html

1121 ms

T8Ys39_ecZUP0z5o0qwgiftCx6c5Z_CDv350QIo51NY.js

T8Ys39_ecZUP0z5o0qwgiftCx6c5Z_CDv350QIo51NY.js

185 ms

pixel

pixel

1434 ms

Accessibility Review

onlinejudge.org accessibility score

75

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

High

Form elements do not have associated labels

Best Practices

onlinejudge.org best practices score

50

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

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

SEO Factors

onlinejudge.org SEO score

77

Search Engine Optimization Advices

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 Onlinejudge.org 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 Onlinejudge.org 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

onlinejudge.org

Open Graph description is not detected on the main page of Online Judge. 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: