nptel.ac.in Website Information
Daily Unique Visits: 61,916
Daily Page Views: 371,496
Income Per Day: $743
Estimated Value: $534,960
This website is located in India and is using following IP address 14.139.160.71. See the complete list of popular websites hosted in India.
nptel.ac.in is registered under .IN top-level domain. Please check other sites in .IN zone.
Website nptel.ac.in is using the following name servers:
- dns1.iitm.ac.in
- dns2.iitm.ac.in
- dns3.iitm.ac.in
and is probably hosted by GOOGLE - Google LLC, US. See the full list of other websites hosted by GOOGLE - Google LLC, US.
The highest website nptel.ac.in position in Alexa rank database was 21460 and the lowest rank position was 23274. Current position of nptel.ac.in in Alexa rank database is 23164.
Desktop speed score of nptel.ac.in (41/100) is better than the results of 15.65% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of nptel.ac.in (76/100) is better than the results of 23.99% of other sites and means that the page is not mobile-friendly.
Mobile speed score of nptel.ac.in (37/100) is better than the results of 15.74% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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nptel.ac.in 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.
nptel.ac.in 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.
nptel.ac.in server information
Servers Location
nptel.ac.in desktop page speed rank
Last tested: 2019-12-05
Desktop Speed
Bad
41/100
nptel.ac.in Desktop Speed Test Quick Summary
priority - 128Optimize images
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priority - 14Leverage 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.
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priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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priority - 4Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
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priority - 0Minify CSS
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priority - 0Minify HTML
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nptel.ac.in Desktop Resource Breakdown
| Total Resources | 53 |
| Number of Hosts | 8 |
| Static Resources | 35 |
| JavaScript Resources | 7 |
| CSS Resources | 7 |
nptel.ac.in mobile page speed rank
Last tested: 2018-02-08
Mobile Speed
Bad
37/100
nptel.ac.in Mobile Speed Test Quick Summary
priority - 128Optimize images
Properly formatting and compressing images can save many bytes of data.
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priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 11 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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http://nptel.ac.in/newstyles/js/bootstrap.3.3.4.js
http://nptel.ac.in/newstyles/js/script.js
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Optimize CSS Delivery of the following:
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http://nptel.ac.in/newstyles/css/style.css
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http://fonts.googleapis.com/css?family=Cookie
http://nptel.ac.in/css/lightslider.css
http://nptel.ac.in/css/testimonial.css
https://cdnjs.cloudflare.com/ajax/libs/owl-carouse…3/owl.carousel.min.css
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priority - 22Leverage 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:
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http://nptel.ac.in/img/logo/Image-01.jpg (expiration not specified)
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http://nptel.ac.in/img/logo/Image-03.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-04.jpg (expiration not specified)
http://nptel.ac.in/img/logo/Image-05.jpg (expiration not specified)
http://nptel.ac.in/img/logo/industry_logo.jpg (expiration not specified)
http://nptel.ac.in/js/lightslider.js (expiration not specified)
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http://nptel.ac.in/newstyles/css/footer.css (expiration not specified)
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http://nptel.ac.in/newstyles/images/btt.png (expiration not specified)
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http://nptel.ac.in/newstyles/images/iit-logos/iitbombay.png (expiration not specified)
http://nptel.ac.in/newstyles/images/iit-logos/iitdelhi.png (expiration not specified)
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https://static.doubleclick.net/instream/ad_status.js (15 minutes)
priority - 4Minify 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 43.5KiB (47% reduction).
Minifying http://nptel.ac.in/newstyles/js/jquery.1.10.2.js could save 39.8KiB (50% reduction) after compression.
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Minifying http://nptel.ac.in/js/lightslider.js could save 1.6KiB (24% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 3.4KiB (32% reduction).
Minifying http://nptel.ac.in/ could save 3.4KiB (32% reduction) after compression.
priority - 0Minify CSS
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Minify CSS for the following resources to reduce their size by 1.5KiB (21% reduction).
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nptel.ac.in Mobile Resource Breakdown
| Total Resources | 65 |
| Number of Hosts | 12 |
| Static Resources | 50 |
| JavaScript Resources | 12 |
| CSS Resources | 13 |
nptel.ac.in mobile page usability
Last tested: 2018-02-08
Mobile Usability
Medium
76/100
nptel.ac.in Mobile Usability Test Quick Summary
priority - 26Size content to viewport
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 645 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:
The element
The element
<div class="alert featuretitle">Jan to June 20…course booklet</div> falls outside the viewport.The element
<img src="images/booklet_18/001.jpg"> falls outside the viewport.priority - 5Size 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.
The tap target
<a href="https://www.fa….com/NPTELNoc/">Facebook</a> and 4 others are close to other tap targets.The tap target
<button type="button" class="navbar-toggle collapsed">Toggle navigation</button> is close to 3 other tap targets.The tap target
<a href="http://nptel.ac.in/" class="navbar-brand"></a> is close to 1 other tap targets.The tap target
<a href="https://online…ac.in/explorer"></a> is close to 2 other tap targets.The tap target
<a href="https://online…ac.in/explorer"></a> is close to 2 other tap targets.The tap target
<div id="player_uid_194268938_1" class="html5-video-pl…ytp-small-mode">1/2NPTEL Highl…y again later.</div> is close to 4 other tap targets.The tap target
<button class="ytp-playlist-m…ton ytp-button">1/2</button> is close to 4 other tap targets.The tap target
<div id="testimonial-slider" class="owl-carousel owl-theme">Architectural…4 Weeks</div> is close to 2 other tap targets.The tap target
<a id="course_modal" href="https://online…8_ar04/preview">Architectural…8 Weeks</a> is close to 2 other tap targets.The tap target
<div class="modal-dialog">×…M IS NOW OPEN!</div> is close to 3 other tap targets.The tap target
<div class="modal-dialog">×…M IS NOW OPEN!</div> and 2 others are close to other tap targets.The tap target
<button type="button" class="close">×</button> is close to 1 other tap targets.The tap target
<button type="button" class="close">×</button> is close to 1 other tap targets.The tap target
<a href="http://www.iitb.ac.in/"></a> and 3 others are close to other tap targets.The tap target
<a href="http://nptel.a…gate_paper.php"></a> and 5 others are close to other tap targets.nptel.ac.in HTML validation
Errors
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 35 Column: 63 - 150
"...l.ac.in/"><img src="./newstyles/images/iit-logos/nptel-logo.png" class="img-responsive nptellogo"></a> ..." Line: 340 Column: 85 - 160
"...="_blank"><img src="images/livesession_banner.jpg" style="width: 100%;height: 241px;"></a> ..." Line: 8562 Column: 83 - 174
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..." Line: 8564 Column: 229 - 260
"...tails!</b><img src="new.gif" width="50px"></a> ..." Line: 8637 Column: 133 - 211
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..." Line: 8697 Column: 82 - 147
"...="_blank"><img class="img-responsive ccimg" src="./newstyles/images/cc.png"></a></..." Line: 8757 Column: 18 - 105
"...d="toTop"><img src="./newstyles/images/btt.png" style="width:50px;height:50px;margin-top: -40px;"></div>..."
"...l.ac.in/"><img src="./newstyles/images/iit-logos/nptel-logo.png" class="img-responsive nptellogo"></a> ..." Line: 340 Column: 85 - 160
"...="_blank"><img src="images/livesession_banner.jpg" style="width: 100%;height: 241px;"></a> ..." Line: 8562 Column: 83 - 174
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..." Line: 8564 Column: 229 - 260
"...tails!</b><img src="new.gif" width="50px"></a> ..." Line: 8637 Column: 133 - 211
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..." Line: 8697 Column: 82 - 147
"...="_blank"><img class="img-responsive ccimg" src="./newstyles/images/cc.png"></a></..." Line: 8757 Column: 18 - 105
"...d="toTop"><img src="./newstyles/images/btt.png" style="width:50px;height:50px;margin-top: -40px;"></div>..."
End tag “nav” seen, but there were open elements.
Line: 51 Column: 5 - 10
"...e --> </nav> <!--S..."
"...e --> </nav> <!--S..."
Unclosed element “div”.
Line: 27 Column: 7 - 45
"...e"> <div class="head-container navcontrol"> ..."
"...e"> <div class="head-container navcontrol"> ..."
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Line: 81 Column: 1 - 7
"...ript> --> <style> .b..."
"...ript> --> <style> .b..."
Element “marquee” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 435 Column: 13 - 42
"... <marquee behavior="scroll" direction="left" onmouseover="this.stop();" onmouseout="this.start();"> ..."
"... <marquee behavior="scroll" direction="left" onmouseover="this.stop();" onmouseout="this.start();"> ..."
Bad value “500px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Line: 8562 Column: 83 - 174
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..."
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..."
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Line: 8562 Column: 83 - 174
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..." Line: 8637 Column: 133 - 211
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..."
"...="_blank"><img src="images/home_popup_18.jpg" height="500px" width="100%" style="margin: 0 0 15px 0;"></a> ..." Line: 8637 Column: 133 - 211
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..."
The element “button” must not appear as a descendant of the “a” element.
Line: 8563 Column: 89 - 176
"...blank"> <button type="button" class="btn btn-default" style="width: 100%; background: #f7b03c;"><b>cli..."
"...blank"> <button type="button" class="btn btn-default" style="width: 100%; background: #f7b03c;"><b>cli..."
Bad value “50px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Line: 8564 Column: 229 - 260
"...tails!</b><img src="new.gif" width="50px"></a> ..."
"...tails!</b><img src="new.gif" width="50px"></a> ..."
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Line: 8577 Column: 16 - 61
"... <div class="col-md-8 iitlogos" align="center"> ..."
"... <div class="col-md-8 iitlogos" align="center"> ..."
No space between attributes.
Line: 8625 Column: - 165
"...requested=true"_blank">Click h..."
"...requested=true"_blank">Click h..."
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Line: 8625 Column: - 171
"...ted=true"_blank">Click here !<..."
"...ted=true"_blank">Click here !<..."
Attribute “_blank"” not allowed on element “a” at this point.
Line: 8625 Column: 50 - 172
"...s="ftext"><a href="https://docs.google.com/forms/d/12JvPSJogV5-0cAePr0vFfsRYklAKHwnlgqwtIvo-1ZM/viewform?edit_requested=true"_blank">Click ..."
"...s="ftext"><a href="https://docs.google.com/forms/d/12JvPSJogV5-0cAePr0vFfsRYklAKHwnlgqwtIvo-1ZM/viewform?edit_requested=true"_blank">Click ..."
Bad value “550px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Line: 8637 Column: 133 - 211
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..."
"...k Here!"> <img width="100%" height="550px" src="images/booklet_18/home_booklet_18.jpg" /></a> ..."
Stray end tag “div”.
Line: 8671 Column: 1 - 6
"... </div> </div> <di..."
"... </div> </div> <di..."
The “center” element is obsolete. Use CSS instead.
Line: 8678 Column: 6 - 13
"...er"> <center> ..." Line: 8688 Column: 6 - 13
"...er"> <center> ..." Line: 8708 Column: 5 - 12
"...ast"> <center> ..."
"...er"> <center> ..." Line: 8688 Column: 6 - 13
"...er"> <center> ..." Line: 8708 Column: 5 - 12
"...ast"> <center> ..."
Bad value “sug_course_level col-md-4” for attribute “for” on element “label”: An ID must not contain whitespace.
Line: 8725 Column: 40 - 87
"...col-md-4"><label for="sug_course_level col-md-4" class="">Level*..."
"...col-md-4"><label for="sug_course_level col-md-4" class="">Level*..."
The first child “option” element of a “select” element with a “required” attribute, and without a “multiple” attribute, and without a “size” attribute whose value is greater than “1”, must have either an empty “value” attribute, or must have no text content. Consider either adding a placeholder option label, or adding a “size” attribute with a value equal to the number of “option” elements.
Line: 8727 Column: 16 - 34
"... <option value="UG">UG</op..."
"... <option value="UG">UG</op..."
Element “style” not allowed as child of element “footer” in this context. (Suppressing further errors from this subtree.)
Line: 8782 Column: 1 - 7
"... </div> <style> .cen..."
"... </div> <style> .cen..."
The “for” attribute of the “label” element must refer to a non-hidden form control.
Line: 8725 Column: 40 - 87
"...col-md-4"><label for="sug_course_level col-md-4" class="">Level*..." Line: 8738 Column: 40 - 70
"...col-md-4"><label for="sug_type" class="">Are yo..."
"...col-md-4"><label for="sug_course_level col-md-4" class="">Level*..." Line: 8738 Column: 40 - 70
"...col-md-4"><label for="sug_type" class="">Are yo..."
The “aria-labelledby” attribute must point to an element in the same document.
Line: 8545 Column: 10 - 109
"... <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="memberModalLabel"> ..."
"... <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="memberModalLabel"> ..."
Warnings
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Line: 3172 Column: - 34
"...edded Systems-- Design Verific..."
"...edded Systems-- Design Verific..."
Attribute “_blank"” is not serializable as XML 1.0.
Line: 8625 Column: 50 - 172
"...s="ftext"><a href="https://docs.google.com/forms/d/12JvPSJogV5-0cAePr0vFfsRYklAKHwnlgqwtIvo-1ZM/viewform?edit_requested=true"_blank">Click ..."
"...s="ftext"><a href="https://docs.google.com/forms/d/12JvPSJogV5-0cAePr0vFfsRYklAKHwnlgqwtIvo-1ZM/viewform?edit_requested=true"_blank">Click ..."
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nptel.ac.in 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.
nptel.ac.in 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.