codechef.com Website Information
Daily Unique Visits: 135,024
Daily Page Views: 810,144
Income Per Day: $1,620
Estimated Value: $1,166,400
codechef.com is registered under .COM top-level domain. Please check other sites in .COM zone.
No name server records were found.
and is probably hosted by AMAZON-AES - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-AES - Amazon.com, Inc., US.
The highest website codechef.com position in Alexa rank database was 7790 and the lowest rank position was 10622. Current position of codechef.com in Alexa rank database is 10622.
Desktop speed score of codechef.com (71/100) is better than the results of 52.66% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of codechef.com (62/100) is better than the results of 7.29% of other sites and means that the page is not mobile-friendly.
Mobile speed score of codechef.com (54/100) is better than the results of 41.82% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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codechef.com Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
codechef.com whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Registry Domain ID: 155708899_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.PublicDomainRegistry.com
Registrar URL: http://www.publicdomainregistry.com
Updated Date: 2020-11-10T09:19:23Z
Creation Date: 2005-05-08T18:25:45Z
Registry Expiry Date: 2021-11-24T09:12:07Z
Registrar: PDR Ltd. d/b/a PublicDomainRegistry.com
Registrar IANA ID: 303
Registrar Abuse Contact Email: abuse-contact@publicdomainregistry.com
Registrar Abuse Contact Phone: +1.2013775952
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS-1074.AWSDNS-06.ORG
Name Server: NS-1990.AWSDNS-56.CO.UK
Name Server: NS-275.AWSDNS-34.COM
Name Server: NS-741.AWSDNS-28.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-04-25T01:15:48Z
codechef.com server information
Servers Location
codechef.com desktop page speed rank
Last tested: 2016-08-03
codechef.com Desktop Speed Test Quick Summary
priority - 17Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 162.2KiB (23% reduction).
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priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 20 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.codechef.com/misc/drupal.js?H
https://www.codechef.com/misc/jquery-popup-overlay/popupoverlay.js?H
https://www.codechef.com/em/libs/common/common.js?H
https://www.codechef.com/sites/all/modules/codeche…s/js/localStorage.js?H
https://www.codechef.com/sites/all/modules/codeche…ons/js/keybinding.js?H
https://www.codechef.com/sites/all/modules/codeche…echefGenericModal.js?H
https://www.codechef.com/sites/all/modules/codeche…_common_functions.js?H
https://www.codechef.com/sites/all/modules/codeche…todo_notification.js?H
https://www.codechef.com/sites/all/modules/fbmod/js/fb_sdk.js?H
https://www.codechef.com/sites/all/modules/nice_menus/nice_menus.js?H
https://www.codechef.com/sites/all/modules/tableof…uery.scrollTo-min.js?H
https://www.codechef.com/sites/all/modules/tableof…y.localscroll-min.js?H
https://www.codechef.com/sites/all/modules/tableof…s/tableofcontents.js?H
https://www.codechef.com/em/libs/jquery/jquery.tools.js
https://www.codechef.com/bower_components/jquery/dist/jquery.min.js
https://www.codechef.com/bower_components/foundation/js/foundation.min.js
https://www.codechef.com/sites/all/themes/abessive…js/owl.carousel.min.js
https://www.codechef.com/sites/all/themes/abessive/js/app.js
https://www.codechef.com/misc/jquery-video-lightni…video-lightning.min.js
Optimize CSS Delivery of the following:
https://www.codechef.com/sites/all/themes/abessive/css/app.css
priority - 7Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.codechef.com/
https://www.codechef.com/
priority - 4Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://www.codechef.com/api/user/campaigns (expiration not specified)
https://www.codechef.com/todo/notification/count (expiration not specified)
https://static.hotjar.com/c/hotjar-167687.js?sv=5 (60 seconds)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://beacon.errorception.com/4e7c8fce06a9ab05530008e5.js (60 minutes)
https://www.google.com/jsapi (60 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
priority - 2Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 21.7KiB (66% reduction).
codechef.com Desktop Resource Breakdown
Total Resources | 94 |
Number of Hosts | 16 |
Static Resources | 62 |
JavaScript Resources | 33 |
CSS Resources | 5 |
codechef.com mobile page speed rank
Last tested: 2019-12-06
codechef.com Mobile Speed Test Quick Summary
priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 21 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.codechef.com/misc/drupal.js?0
https://www.codechef.com/misc/jquery-popup-overlay/popupoverlay.js?0
https://www.codechef.com/em/libs/cryptojs/aes.js?0
https://www.codechef.com/em/libs/common/common.js?0
https://www.codechef.com/sites/all/modules/codeche…s/js/localStorage.js?0
https://www.codechef.com/sites/all/modules/codeche…ons/js/keybinding.js?0
https://www.codechef.com/sites/all/modules/codeche…echefGenericModal.js?0
https://www.codechef.com/sites/all/modules/codeche…_common_functions.js?0
https://www.codechef.com/sites/all/modules/codeche…todo_notification.js?0
https://www.codechef.com/sites/all/modules/fbmod/js/fb_sdk.js?0
https://www.codechef.com/sites/all/modules/nice_menus/nice_menus.js?0
https://www.codechef.com/sites/all/modules/tableof…uery.scrollTo-min.js?0
https://www.codechef.com/sites/all/modules/tableof…y.localscroll-min.js?0
https://www.codechef.com/sites/all/modules/tableof…s/tableofcontents.js?0
https://www.codechef.com/em/libs/jquery/jquery.tools.js
https://www.codechef.com/bower_components/jquery/dist/jquery.min.js
https://www.codechef.com/bower_components/foundation/js/foundation.min.js
https://www.codechef.com/sites/all/themes/abessive…js/owl.carousel.min.js
https://www.codechef.com/sites/all/themes/abessive/js/app.js?v=2
https://www.codechef.com/misc/jquery-video-lightni…video-lightning.min.js
Optimize CSS Delivery of the following:
https://www.codechef.com/sites/all/themes/abessive/css/app.css?v=9
priority - 26Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://www.codechef.com/
https://www.codechef.com/
priority - 15Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 151.3KiB (49% reduction).
Compressing https://s3.amazonaws.com/codechef_shared/sites/all…er-performance-new.jpg could save 40KiB (58% reduction).
Compressing https://s3.amazonaws.com/codechef_shared/download/1-HP-CO-DEC%20.jpg could save 9KiB (14% reduction).
Compressing https://s3.amazonaws.com/codechef_shared/sites/all…ster/images/google.png could save 4.3KiB (47% reduction).
Compressing https://s3.amazonaws.com/codechef_shared/sites/all…ster/images/github.png could save 4.3KiB (49% reduction).
Compressing https://s3.amazonaws.com/codechef_shared/sites/all…er/images/facebook.png could save 2.2KiB (54% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yS/r/vcc5m4dw3rZ.png could save 518B (37% reduction).
Compressing https://scontent-ort2-2.xx.fbcdn.net/v/t1.0-1/p50x…9660342aac&oe=5E4234D3 could save 447B (34% reduction).
priority - 11Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://s3.amazonaws.com/codechef_shared/sites/all…anner_300_250(new).png (expiration not specified)
https://static.hotjar.com/c/hotjar-167687.js?sv=5 (60 seconds)
https://www.googletagmanager.com/gtm.js?id=GTM-TV5X2M (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://connect.facebook.net/signals/config/244418…0350?v=2.9.14&r=stable (20 minutes)
https://connect.facebook.net/signals/config/355751…2349?v=2.9.14&r=stable (20 minutes)
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https://beacon.errorception.com/4e7c8fce06a9ab05530008e5.js (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.google.com/jsapi (60 minutes)
https://www.googleadservices.com/pagead/conversion.js (60 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 0Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 672B (39% reduction).
codechef.com Mobile Resource Breakdown
Total Resources | 111 |
Number of Hosts | 21 |
Static Resources | 62 |
JavaScript Resources | 44 |
CSS Resources | 3 |
codechef.com mobile page usability
Last tested: 2019-12-06
codechef.com Mobile Usability Test Quick Summary
priority - 40Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
Forgot Password
renders only 4 pixels tall (10 CSS pixels).New User
renders only 5 pixels tall (12 CSS pixels).PRACTICE
and 2 others render only 5 pixels tall (14 CSS pixels).COMMUNITY
and 2 others render only 4 pixels tall (11 CSS pixels).December Challenge
renders only 5 pixels tall (14 CSS pixels).CodeChef DSA Certification
and 2 others render only 5 pixels tall (14 CSS pixels).New to Programming
renders only 5 pixels tall (14 CSS pixels).and don't know where to start?
renders only 5 pixels tall (14 CSS pixels).Start Here
renders only 5 pixels tall (12 CSS pixels).Recent Blog Posts
and 5 others render only 7 pixels tall (17 CSS pixels).December Challenge 2019
renders only 5 pixels tall (14 CSS pixels).In Progress
renders only 5 pixels tall (13 CSS pixels).You can view a…blem tags here
renders only 5 pixels tall (13 CSS pixels).You can view a…em submissions
renders only 5 pixels tall (13 CSS pixels).here
renders only 5 pixels tall (13 CSS pixels).32.7K
and 9 others render only 7 pixels tall (18 CSS pixels).views
and 9 others render only 5 pixels tall (12 CSS pixels).Can anyone tel…why my sol...
and 9 others render only 5 pixels tall (13 CSS pixels).06-12-2019 17:19:50
and 9 others render only 4 pixels tall (11 CSS pixels).2★
and 1 others render only 4 pixels tall (10 CSS pixels).smile_forever
and 9 others render only 5 pixels tall (12 CSS pixels).View
and 9 others render only 4 pixels tall (10 CSS pixels).6★
and 2 others render only 4 pixels tall (10 CSS pixels).3★
and 2 others render only 4 pixels tall (10 CSS pixels).4★
renders only 4 pixels tall (10 CSS pixels).Announcing the…n January Exam
renders only 5 pixels tall (14 CSS pixels).The Early Bird…December 2019.
renders only 5 pixels tall (12 CSS pixels).Know more
renders only 5 pixels tall (12 CSS pixels).Sep
and 9 others render only 4 pixels tall (11 CSS pixels).ICYMI: Here’s…Long Challenge
and 4 others render only 5 pixels tall (12 CSS pixels).CodeChef
renders only 7 pixels tall (18 CSS pixels).529K likes
renders only 5 pixels tall (12 CSS pixels).Like Page
renders only 5 pixels tall (12 CSS pixels).Be the first o…s to like this
renders only 5 pixels tall (12 CSS pixels).CodeChef is a…ming community
renders only 4 pixels tall (11 CSS pixels).About CodeChef
renders only 4 pixels tall (11 CSS pixels).CEO's Corner
and 1 others render only 4 pixels tall (11 CSS pixels).In order to re…in an email to
and 1 others render only 4 pixels tall (11 CSS pixels).copyright@codechef.com
and 1 others render only 4 pixels tall (11 CSS pixels).167.99.102.248, 66.249.84.6
and 3 others render only 4 pixels tall (11 CSS pixels).Practice Section
and 2 others render only 5 pixels tall (13 CSS pixels).- Monthly Prog…and Lunchtime
and 2 others render only 5 pixels tall (13 CSS pixels).judge accepts…r the multiple
and 16 others render only 5 pixels tall (12 CSS pixels).computer programming skills
and 13 others render only 5 pixels tall (12 CSS pixels).Programming Tools
and 3 others render only 5 pixels tall (13 CSS pixels).Upcoming Coding Contests
and 21 others render only 5 pixels tall (12 CSS pixels).to know more.…e our website.
and 3 others render only 5 pixels tall (12 CSS pixels).Privacy Policy
and 1 others render only 5 pixels tall (12 CSS pixels).Okay
renders only 5 pixels tall (13 CSS pixels).priority - 14Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
<input id="edit-pass" type="password" name="pass" class="form-text required new-input">
is close to 1 other tap targets.<a href="/user/password">Forgot Password</a>
is close to 2 other tap targets.<a id="button_google" class="icon-social oa…-small connect">
is close to 1 other tap targets.<a id="button_github" class="icon-social oa…-small connect">
is close to 2 other tap targets.<a id="button_facebook" class="icon-social oa…-small connect">
is close to 1 other tap targets.<a href="/problems/school">PRACTICE</a>
and 2 others are close to other tap targets.<a href="/community">COMMUNITY</a>
and 2 others are close to other tap targets.<div id="home-slider-dots" class="owl-dots">December Chall…Top Performers</div>
is close to 2 other tap targets.<div id="home-slider-dots" class="owl-dots">December Chall…Top Performers</div>
is close to 2 other tap targets.<div id="home-slider-dots" class="owl-dots">December Chall…Top Performers</div>
and 2 others are close to other tap targets.<div class="owl-prev">prev</div>
is close to 3 other tap targets.<div class="owl-next">next</div>
is close to 3 other tap targets.<a href="/getting-started" class="button blue">Start Here</a>
is close to 2 other tap targets.<a href="https://www.fa…k.com/CodeChef" class="fb">Facebook</a>
is close to 3 other tap targets.<a href="https://twitter.com/CodeChef" class="tw">Twitter</a>
is close to 4 other tap targets.<a href="https://plus.g…codechef/posts" class="gp">Google+</a>
is close to 4 other tap targets.<a href="https://www.yo…dechefofficial" class="yt">YouTube</a>
is close to 4 other tap targets.<a href="https://www.qu…topic/CodeChef" class="qu">Quora</a>
is close to 2 other tap targets.<a href="https://discus…ef.com/t/45798">Long Challenges</a>
and 9 others are close to other tap targets.<a href="/users/hellaweird">2★hellaweird</a>
and 1 others are close to other tap targets.<a href="/users/hellaweird">2★hellaweird</a>
and 9 others are close to other tap targets.<a href="/users/ssjgz">6★ssjgz</a>
and 2 others are close to other tap targets.<a href="/users/abhj">3★abhj</a>
and 2 others are close to other tap targets.<a href="/users/jprm2">4★jprm2</a>
is close to 1 other tap targets.<img src="https://sconte…ac&oe=5E4234D3" class="_1drn _-s img">
is close to 1 other tap targets.<a href="/ceoscorner/">CEO's Corner</a>
and 1 others are close to other tap targets.<a href="http://www.sphere-research.com">Sphere Research Labs</a>
is close to 1 other tap targets.The tap target
<a href="/ide">Online IDE</a>
and 21 others are close to other tap targets.priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
codechef.com HTML validation
Errors
Bad start tag in “img” in “head”.
"...> <img height="1" width="1" src="https://www.facebook.com/tr?id=277309139459596&ev=PageView &noscript=1"/> ..."
Element “head” is missing a required instance of child element “title”.
"...> <img height="1" width="1" src="https://www.facebook.com/tr?id=277309139459596&ev=PageView &noscript=1"/> ..."
Bad value “https://www.facebook.com/tr?id=277309139459596&ev=PageView &noscript=1” for attribute “src” on element “img”: Tab, new line or carriage return found.
"...> <img height="1" width="1" src="https://www.facebook.com/tr?id=277309139459596&ev=PageView &noscript=1"/> ..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"...> <img height="1" width="1" src="https://www.facebook.com/tr?id=277309139459596&ev=PageView &noscript=1"/> ..."
Stray end tag “noscript”.
"...> </noscript> ..."
A “charset” attribute on a “meta” element found after the first 1024 bytes.
"... charset="utf-8"> <link rel..."
Attribute “charset” not allowed on element “meta” at this point.
"...Code --> <meta charset="utf-8"> <l..."
Element “meta” is missing one or more of the following attributes: “content”, “itemprop”, “property”.
"...Code --> <meta charset="utf-8"> <l..."
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
"...Code --> <meta charset="utf-8"> <l..." Line: 52 Column: 1 - 69
"...g</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta..."
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
"...com" /> <link rel="canonical" href="http://www.codechef.com/"/> <s..." Line: 55 Column: 1 - 73
"...mming" /> <link rel="shortcut icon" href="/misc/favicon.ico" type="image/x-icon" /> <scri..."
Element “title” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
".../script> <title> Pro..."
Attribute “http-equiv” not allowed on element “meta” at this point.
"...g</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta..."
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
"...g</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta..." Line: 53 Column: 1 - 128
"...utf-8" /> <meta name="keywords" content="programming competition, programming contest, online programming, online computer programming" /> <meta..." Line: 54 Column: 1 - 187
"...mming" /> <meta name="description" content="Programming Competition: Join Online Programming Contest. CodeChef hosts Online Programming Competition, Programming Contest and Computer Programming" /> <link..." Line: 82 Column: 1 - 94
"...</script> <meta name="google-site-verification" content="u_r-UtobgmZQQ9jZd9_KqvQl-qc42N6HE0TOBxeWghg" /> </hea..."
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
"...g</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta..."
Attribute “name” not allowed on element “meta” at this point.
"...utf-8" /> <meta name="keywords" content="programming competition, programming contest, online programming, online computer programming" /> <meta..." Line: 54 Column: 1 - 187
"...mming" /> <meta name="description" content="Programming Competition: Join Online Programming Contest. CodeChef hosts Online Programming Competition, Programming Contest and Computer Programming" /> <link..." Line: 82 Column: 1 - 94
"...</script> <meta name="google-site-verification" content="u_r-UtobgmZQQ9jZd9_KqvQl-qc42N6HE0TOBxeWghg" /> </hea..."
Stray end tag “head”.
"...eWghg" /> </head> <body..."
Start tag “body” seen but an element of the same type was already open.
"...> </head> <body class="sidebars"> <!-..."
Cannot recover after last error. Any further errors will be ignored.
"...> </head> <body class="sidebars"> <!-..."
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codechef.com Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
codechef.com TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.