engineering.com Website Information

Daily Unique Visits: 139,178

Daily Page Views: 835,068

Income Per Day: $1,670

Estimated Value: $1,202,400

This website is located in United States and is using following IP address 52.207.12.239. See the complete list of popular websites hosted in United States.

engineering.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website engineering.com is using the following name servers:

ns-1081.awsdns-07.org
ns-1878.awsdns-42.co.uk
ns-465.awsdns-58.com
ns-664.awsdns-19.net

and is probably hosted by CLOUDFLARESPECTRUM Cloudflare, Inc., GB. See the full list of other websites hosted by CLOUDFLARESPECTRUM Cloudflare, Inc., GB.

The highest website engineering.com position in Alexa rank database was 9825 and the lowest rank position was 10514. Current position of engineering.com in Alexa rank database is 10305.

Desktop speed score of engineering.com (48/100) is better than the results of 21.82% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of engineering.com (98/100) is better than the results of 55.61% of other sites and means that the page is mobile-friendly.

Mobile speed score of engineering.com (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.

engineering.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.

engineering.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.

Domain Name: ENGINEERING.COM
Registry Domain ID: 2224000_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.networksolutions.com
Registrar URL: http://networksolutions.com
Updated Date: 2022-09-27T12:58:31Z
Creation Date: 1995-01-11T05:00:00Z
Registry Expiry Date: 2026-01-10T05:00:00Z
Registrar: Network Solutions, LLC
Registrar IANA ID: 2
Registrar Abuse Contact Email: domain.operations@web.com
Registrar Abuse Contact Phone: +1.8777228662
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS-1081.AWSDNS-07.ORG
Name Server: NS-1878.AWSDNS-42.CO.UK
Name Server: NS-465.AWSDNS-58.COM
Name Server: NS-664.AWSDNS-19.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-12T03:08:15Z

engineering.com server information

Servers Location

engineering.com desktop page speed rank

Last tested: 2019-12-14

Desktop Speed Bad

48/100

engineering.com Desktop Speed Test Quick Summary

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priority - 18Leverage browser caching

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priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 7Avoid landing page redirects

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priority - 0Reduce server response time

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engineering.com Desktop Resource Breakdown

Total Resources	181
Number of Hosts	56
Static Resources	93
JavaScript Resources	81
CSS Resources	14

engineering.com mobile page speed rank

Last tested: 2019-12-11

Mobile Speed Bad

37/100

engineering.com Mobile Speed Test Quick Summary

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priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 29Leverage browser caching

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priority - 26Avoid landing page redirects

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priority - 3Reduce server response time

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priority - 3Minify HTML

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priority - 2Minify JavaScript

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priority - 1Minify CSS

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engineering.com Mobile Resource Breakdown

Total Resources	215
Number of Hosts	66
Static Resources	107
JavaScript Resources	90
CSS Resources	16

engineering.com mobile page usability

Last tested: 2019-12-11

Mobile Usability Good

98/100

engineering.com Mobile Usability Test Quick Summary

priority - 2Size 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 <ul class="topNav_bar ani…e standardMode">MENU…Log In</ul> is close to 2 other tap targets.

The tap target <div id="navToggle" class="navToggle">MENU</div> is close to 1 other tap targets.

The tap target <a href="/About" class="footer">Contact Us</a> and 36 others are close to other tap targets.

engineering.com HTML validation

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Line: 1 Column: 1 - 121
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."

Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.

Line: 5 Column: 78 - 144
"...t-Type" /><meta content="text/javascript" http-equiv="Content-Script-Type" /><meta ..."

Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.

Line: 5 Column: 145 - 203
"...t-Type" /><meta content="text/css" http-equiv="Content-Style-Type" /><meta ..."

Bad value “PAGE-ENTER” for attribute “http-equiv” on element “meta”.

Line: 5 Column: 1312 - 1390
"...ENERAL" /><meta http-equiv="PAGE-ENTER" content="RevealTrans(Duration=0,Transition=1)" /><style..."

Attribute “name” not allowed on element “meta” at this point.

Line: 39 Column: 1 - 68
"...esheet'> <meta name="viewport" content="width=device-width, initial-scale=1"> <link..."

Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.

Line: 39 Column: 1 - 68
"...esheet'> <meta name="viewport" content="width=device-width, initial-scale=1"> <link..."

Element “script” must not have attribute “async” unless attribute “src” is also specified or unless attribute “type” is specified with value “module”.

Line: 64 Column: 1 - 14
"...script> <script async> // Th..." Line: 100 Column: 1 - 14
"...##### --> <script async> var d..." Line: 113 Column: 1 - 14
"...nager --> <script async>(funct..." Line: 143 Column: 1 - 37
".../script> <script type="text/javascript" async> va..." Line: 206 Column: 7 - 20
"...e"> <script async> funct..." Line: 238 Column: 7 - 20
"...h"> <script async> (func..." Line: 944 Column: 3 - 39
"...ormal"> <script type="text/javascript" async> $(d..." Line: 1210 Column: 5 - 18
".../div> <script async> fun..." Line: 1503 Column: 5 - 18
"...ript> <script async> // ..." Line: 1727 Column: 1 - 37
"...86520-2"> <script type='text/javascript' async> var g..." Line: 1924 Column: 2 - 38
"...Normal"> <script type='text/javascript' async> var g..." Line: 1938 Column: 1 - 37
"...</script> <script type='text/javascript' async> googl..." Line: 1971 Column: 1 - 37
"...style=""> <script type='text/javascript' async> googl..."

Element “style” not allowed as child of element “form” in this context. (Suppressing further errors from this subtree.)

Line: 167 Column: 1 - 23
"...s --> <style type="text/css">.DnnMo..." Line: 2046 Column: 1 - 7
".../script> <style> /..."

Start tag “body” seen but an element of the same type was already open.

Line: 175 Column: 1 - 6
"... </div> <body> <div..."

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 181 Column: 1 - 7
"...nsent --> <style>a#Cybo..." Line: 474 Column: 3 - 9
"...ormal"> <style> ...." Line: 724 Column: 2 - 8
"...Normal"> <style> u..." Line: 961 Column: 1 - 7
"...v> </div> <style> /..." Line: 1673 Column: 2 - 8
"...Normal"> <style> u..." Line: 1758 Column: 2 - 8
"...Normal"> <style> u..." Line: 1810 Column: 2 - 8
"...Normal"> <style> u..."

Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Line: 194 Column: 5 - 33
"...de"> <div class="topNav_menuWrap"> ..." Line: 222 Column: 5 - 42
"...b --> <div class="navToggle" id="navToggle"> ..." Line: 227 Column: 5 - 30
"...e --> <div class="navSwipeZone"></div>..." Line: 229 Column: 5 - 33
"...div> <div class="topNav_menuWrap"> ..."

Duplicate attribute “class”.

Line: 201 Column: - 59
"...ead_logo" class="topNav_logo_l..." Line: 233 Column: - 59
"...ead_logo" class="topNav_logo_l..."

Duplicate ID “gtm_engcomHead_logo”.

Line: 201 Column: 7 - 194
"...iv> <a class="gtm_topNav" id="gtm_engcomHead_logo" class="topNav_logo_link" href="https://www.engineering.com" target="_self" onclick="dataLayer.push({'eventLabel': 'Engineering.com Logo'});"><img c..." Line: 233 Column: 7 - 195
"...t"> <a class="gtm_topNav" id="gtm_engcomHead_logo" class="topNav_logo_link" href="https://www.engineering.com" target="_self" onclick="dataLayer.push({'eventLabel': 'Engineering.com Logo'});"><img c..."

Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed

Line: 206 Column: 332 - 400
"...</script> <gcse:searchbox-only resultsUrl="https://www.engineering.com/Search"></gcse..." Line: 238 Column: 334 - 402
"...</script> <gcse:searchbox-only resultsUrl="https://www.engineering.com/Search"></gcse..."

Duplicate ID “navToggle”.

Line: 222 Column: 5 - 42
"...b --> <div class="navToggle" id="navToggle"> ..."

No space between attributes.

Line: 294 Column: - 47
"...jects_topLevel"class="topNav_l..."

No “li” element in scope but a “li” end tag seen.

Line: 371 Column: 11 - 15
"... </li> ..."

Duplicate ID “gtm_engcomHead_login”.

Line: 426 Column: 7 - 203
"...t"> <a id="gtm_engcomHead_login" href="/Login.aspx?ReturnUrl=https://www.engineering.com/" class="loginOut gtm_topNav" target="_self" onclick="dataLayer.push({'eventLabel': 'User Account > Log In'});">Log&nb..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 439 Column: 3 - 139
"...blank"> <img src="https://file1.engineering.com/ads/mouser/2019/feb/80351-adi-condition-based-monitoring-160x820.jpg" class="desktop_wallpaper"/> </a>..." Line: 442 Column: 3 - 138
"...blank"> <img src="https://file1.engineering.com/ads/mouser/2019/feb/80350-adi-condition-based-monitoring-160x500.jpg" class="mobile_wallpaper"/> </a>..." Line: 447 Column: 3 - 139
"...blank"> <img src="https://file1.engineering.com/ads/mouser/2019/feb/80351-adi-condition-based-monitoring-160x820.jpg" class="desktop_wallpaper"/> </a>..." Line: 450 Column: 3 - 138
"...blank"> <img src="https://file1.engineering.com/ads/mouser/2019/feb/80350-adi-condition-based-monitoring-160x500.jpg" class="mobile_wallpaper"/> </a>..." Line: 599 Column: 92 - 263
"...t="_self"><img src="https://res.cloudinary.com/engineering-com/image/upload/f_jpg,w_460,h_300,c_fill,q_auto,g_auto/v1550165794/black_history_month_wvuayq.jpg" class="img-responsive"></a> <..." Line: 642 Column: 255 - 455
"...gin.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_400,h_250,f_auto,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/3_imag.jpg" class="img-responsive" /></a></..." Line: 642 Column: 912 - 1128
"...New.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_400,h_250,f_auto,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/000cf1a48773102719ba06.jpg" class="img-responsive" /></a></..." Line: 821 Column: 231 - 429
"...her.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/18444.jpg" class="img-responsive" /></a></..." Line: 829 Column: 238 - 441
"...ead.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_PROSTEP2.PNG" class="img-responsive" /></a></..." Line: 837 Column: 249 - 454
"...ype.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_mars cover.PNG" class="img-responsive" /></a></..." Line: 845 Column: 245 - 449
"...hip.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/49_Picture1.png" class="img-responsive" /></a></..." Line: 863 Column: 263 - 464
"...ers.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/73_image.png" class="img-responsive" /></a></..." Line: 871 Column: 242 - 450
"...ion.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/hyperloop cover.JPG" class="img-responsive" /></a></..." Line: 879 Column: 230 - 427
"...CAM.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/2_im.jpg" class="img-responsive" /></a></..." Line: 887 Column: 239 - 438
"...nce.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/spark2.png" class="img-responsive" /></a></..." Line: 895 Column: 208 - 408
"...ons.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/4_drone.jpg" class="img-responsive" /></a></..." Line: 903 Column: 215 - 422
"...PUs.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_amdahl's law.png" class="img-responsive" /></a></..." Line: 911 Column: 228 - 438
"...s-2.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/hololens2exploded.jpg" class="img-responsive" /></a></..." Line: 1845 Column: 5 - 174
"...ank"> <img class="anchorListImg img-responsive" src="https://res.cloudinary.com/engineering-com/image/upload/h_200,c_fill,ar_3:2,f_auto,q_auto/artflow_201808271149_unmzio.jpg"> <..." Line: 1859 Column: 5 - 220
"...ank"> <img class="anchorListImg img-responsive" src="https://res.cloudinary.com/engineering-com/image/fetch/h_200,c_fill,ar_3:2,f_auto,q_auto,g_faces:center/https://www.engineering.com/portals/0/BlogFiles/VidThumbnil.png"> <..." Line: 1873 Column: 5 - 235
"...ank"> <img class="anchorListImg img-responsive" src="https://res.cloudinary.com/engineering-com/image/fetch/h_200,c_fill,ar_3:2,f_auto,q_auto,g_faces:center/https://www.engineering.com/portals/0/BlogFiles/SurfaceBook2VideoThumbnail.png"> <..." Line: 1887 Column: 5 - 155
"...ank"> <img class="anchorListImg img-responsive" src="https://res.cloudinary.com/engineering-com/image/upload/h_200,c_fill,ar_3:2,f_auto,q_auto/1_ltfrdx.jpg"> <..."

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

Line: 464 Column: 1 - 55
"...343"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 470 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 714 Column: 1 - 55
"...493"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 720 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 758 Column: 1 - 55
"...893"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 764 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 781 Column: 1 - 55
"...342"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 787 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 1588 Column: 1 - 55
"...250"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1594 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 1714 Column: 1 - 55
"...532"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1720 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 1800 Column: 1 - 55
"...465"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1806 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..." Line: 1914 Column: 1 - 55
"...309"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1920 Column: 1 - 53
"... </table> <table width="100%" cellpadding="2" cellspacing="0"> <tr>..."

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

Line: 464 Column: 1 - 55
"...343"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 714 Column: 1 - 55
"...493"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 758 Column: 1 - 55
"...893"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 781 Column: 1 - 55
"...342"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1588 Column: 1 - 55
"...250"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1714 Column: 1 - 55
"...532"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1800 Column: 1 - 55
"...465"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..." Line: 1914 Column: 1 - 55
"...309"></a> <table cellSpacing=0 cellPadding=0 width=100% border=0> <tr>..."

The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.

Line: 472 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr12343_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 722 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr12493_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 766 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr11893_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 789 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr12342_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 1596 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr12250_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 1722 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr10532_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 1808 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr12465_ContentPane" bgcolor="#FFFFFF"><!-- S..." Line: 1922 Column: 6 - 54
"..."0"> <tr> <td id="dnn_ctr11309_ContentPane" bgcolor="#FFFFFF"><!-- S..."

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Line: 642 Column: - 2
"...mePagePicks"> <?xml version="1..." Line: 746 Column: - 2
"...a></p> </div> <?xml version="1..." Line: 821 Column: - 6
"... </div> <?xml version="1..." Line: 829 Column: - 6
"... </div> <?xml version="1..." Line: 837 Column: - 6
"... </div> <?xml version="1..." Line: 845 Column: - 6
"... </div> <?xml version="1..." Line: 863 Column: - 6
"... </div> <?xml version="1..." Line: 871 Column: - 6
"... </div> <?xml version="1..." Line: 879 Column: - 6
"... </div> <?xml version="1..." Line: 887 Column: - 6
"... </div> <?xml version="1..." Line: 895 Column: - 6
"... </div> <?xml version="1..." Line: 903 Column: - 6
"... </div> <?xml version="1..." Line: 911 Column: - 6
"... </div> <?xml version="1..."

Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.

Line: 642 Column: 1415 - 1442
"...dary"><ul><li class="picksSection2" /><li cl..." Line: 642 Column: 1443 - 1470
"...ction2" /><li class="picksSection2" /><li cl..." Line: 746 Column: 393 - 399
"...</a></div><div /></li><..." Line: 746 Column: 715 - 721
"...</a></div><div /></li><..." Line: 746 Column: 1044 - 1050
"...</a></div><div /></li><..." Line: 746 Column: 1340 - 1346
"...</a></div><div /></li><..."

Element “t” not allowed as child of element “b” in this context. (Suppressing further errors from this subtree.)

Line: 746 Column: 361 - 363
"...d=862"><b><t>Sign U..." Line: 746 Column: 683 - 685
"...d=881"><b><t>Sign U..." Line: 746 Column: 1012 - 1014
"...d=880"><b><t>Sign U..." Line: 746 Column: 1308 - 1310
"...d=887"><b><t>Sign U..."

End tag “li” seen, but there were open elements.

Line: 746 Column: 400 - 404
"...iv><div /></li><li><d..." Line: 746 Column: 722 - 726
"...iv><div /></li><li><d..." Line: 746 Column: 1051 - 1055
"...iv><div /></li><li><d..." Line: 746 Column: 1347 - 1351
"...iv><div /></li></ul> ..."

Unclosed element “div”.

Line: 746 Column: 393 - 399
"...</a></div><div /></li><..." Line: 746 Column: 715 - 721
"...</a></div><div /></li><..." Line: 746 Column: 1044 - 1050
"...</a></div><div /></li><..." Line: 746 Column: 1340 - 1346
"...</a></div><div /></li><..."

Bad value “https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_mars cover.PNG” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Line: 837 Column: 249 - 454
"...ype.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_mars cover.PNG" class="img-responsive" /></a></..."

Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.

Line: 854 Column: 5 - 316
"...5%;"> <iframe src="https://www.youtube.com/embed/videoseries?list=PLRO-ejXceYK_XqMfSs4HTxxv0t3ETRMRx" allowfullscreen="" webkitallowfullscreen="" mozallowfullscreen="" frameborder="0" scrolling="no" style="width: 100%; height: 100%; position: absolute; top: 0px; bottom: 0px; right: 0px; left: 0px; overflow: hidden;"></ifra..."

Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

Bad value “https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/hyperloop cover.JPG” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Line: 871 Column: 242 - 450
"...ion.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/hyperloop cover.JPG" class="img-responsive" /></a></..."

Bad value “https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_amdahl's law.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Line: 903 Column: 215 - 422
"...PUs.aspx"><img src="https://res.cloudinary.com/engineering-com/image/fetch/w_375,h_200,f_jpg,q_auto:low,c_fill,g_faces:center/http://www.engineering.com/portals/0/BlogFiles/1_amdahl's law.png" class="img-responsive" /></a></..."

The “align” attribute on the “h3” element is obsolete. Use CSS instead.

Line: 1184 Column: 1 - 117
"...audio>--> <h3 style="font-family: montserrat; display: block; margin: 20px auto 0px; color: rgb(122, 42, 144);" align="center">Listen..."

The “align” attribute on the “img” element is obsolete. Use CSS instead.

Line: 1534 Column: 66 - 201
"...Fly.aspx"><img align="left" src="https://games.engineering.com/learn2fly/popular-learn2fly.jpg" class="img-responsive" alt="Learn 2 Fly" style=""></a> <..."

A slash was not immediately followed by “>”.

Line: 1909 Column: - 53
"...ne" r1:15 PM 8/25/2017unat="se..." Line: 1909 Column: - 56
"... r1:15 PM 8/25/2017unat="serve..."

Attribute “r1:15” not allowed on element “div” at this point.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “pm” not allowed on element “div” at this point.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “8” not allowed on element “div” at this point.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “25” not allowed on element “div” at this point.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “2017unat” not allowed on element “div” at this point.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Duplicate ID “main_content”.

Line: 1912 Column: 1 - 69
"... </div> <div class="container" id="main_content" style="margin-bottom:20px;"> <div..."

The “align” attribute on the “div” element is obsolete. Use CSS instead.

Line: 1970 Column: 1 - 61
"...board --> <div id="div-gpt-ad-1389208886520-3" align="center" style=""> <scri..."

Warnings

The “type” attribute for the “style” element is not needed and should be omitted.

Line: 5 Column: 1391 - 1435
"...ion=1)" /><style id="StylePlaceholder" type="text/css"></styl..." Line: 167 Column: 1 - 23
"...s --> <style type="text/css">.DnnMo..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 5 Column: 1837 - 1946
"...lesheet"/><script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js?cdv=37" type="text/javascript"></scri..." Line: 17 Column: 1 - 322
"... </div> <script src="/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ScriptManager_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3ad469afcf-7bb2-42b0-a0c2-3f036d3832f2%3aea597d4b%3ab25378d2" type="text/javascript"></scri..." Line: 23 Column: 1 - 31
".../> </div> <script type="text/javascript"> //<![..." Line: 29 Column: 9 - 67
"... <script src="/js/dnncore.js?cdv=37" type="text/javascript"></scri..." Line: 143 Column: 1 - 37
".../script> <script type="text/javascript" async> va..." Line: 161 Column: 1 - 106
"...ripts --> <script defer type="text/javascript" src="https://s7.addthis.com/js/300/addthis_widget.js#pubid=jsemkiw" ></scri..." Line: 182 Column: 1 - 143
"...}</style> <script id="Cookiebot" src="https://consent.cookiebot.com/uc.js" data-cbid="a519561d-5e7f-44e8-9fab-3921debf3ae5" type="text/javascript" async></scri..." Line: 944 Column: 3 - 39
"...ormal"> <script type="text/javascript" async> $(d..." Line: 1571 Column: 1 - 31
"...86520-1"> <script type='text/javascript'> var g..." Line: 1727 Column: 1 - 37
"...86520-2"> <script type='text/javascript' async> var g..." Line: 1924 Column: 2 - 38
"...Normal"> <script type='text/javascript' async> var g..." Line: 1938 Column: 1 - 37
"...</script> <script type='text/javascript' async> googl..." Line: 1971 Column: 1 - 37
"...style=""> <script type='text/javascript' async> googl..." Line: 2000 Column: 1 - 31
".../script> <script type="text/javascript"> /..." Line: 2251 Column: 5 - 35
"...pt> <script type="text/javascript"> ..." Line: 2258 Column: 5 - 35
"...ript> <script type="text/javascript"> ..." Line: 2266 Column: 5 - 89
"...ript> <script type="text/javascript" src="//www.googleadservices.com/pagead/conversion.js"> ..." Line: 2348 Column: 1 - 31
"...script> <script type="text/javascript"> /* ..." Line: 2402 Column: 1 - 79
"... <script type="text/javascript" src="/Resources/Shared/scripts/initWidgets.js" ></scri..."

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

Line: 191 Column: - 9
".../div>    <!-------------------..." Line: 631 Column: - 41
"...--------------- Resource f..." Line: 633 Column: - 17
"... ---------------------------..." Line: 638 Column: - 7
"...> </div> <!-------------------..." Line: 638 Column: - 41
"...--------------- Secondary home..." Line: 644 Column: - 7
"...> </div> <!-------------------..." Line: 644 Column: - 41
"...--------------- Primary homepa..."

The first occurrence of ID “gtm_engcomHead_logo” was here.

Line: 186 Column: 5 - 141
"...ner"> <a class="gtm_topNav" id="gtm_engcomHead_logo" href="/" target="_self" onclick="dataLayer.push({'eventLabel': 'Engineering.com Logo'});"> ..." Line: 186 Column: 5 - 141
"...ner"> <a class="gtm_topNav" id="gtm_engcomHead_logo" href="/" target="_self" onclick="dataLayer.push({'eventLabel': 'Engineering.com Logo'});"> ..."

Element name “gcse:searchbox-only” cannot be represented as XML 1.0.

The first occurrence of ID “navToggle” was here.

Line: 198 Column: 7 - 44
"...t"> <div class="navToggle" id="navToggle"> ..."

The first occurrence of ID “gtm_engcomHead_login” was here.

Line: 213 Column: 7 - 230
"...t"> <a id="gtm_engcomHead_login" href="https://www.engineering.com/Login.aspx?ReturnUrl=https://www.engineering.com/" class="loginOut gtm_topNav" target="_self" onclick="dataLayer.push({'eventLabel': 'User Account > Log In'});">Log&nb..."

The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.

Line: 463 Column: 59 - 74
"...le-12343"><a name="12343"></a> <..." Line: 713 Column: 108 - 123
"...le-12493"><a name="12493"></a> <..." Line: 757 Column: 73 - 88
"...le-11893"><a name="11893"></a> <..." Line: 780 Column: 73 - 88
"...le-12342"><a name="12342"></a> <..." Line: 930 Column: 104 - 119
"...le-10341"><a name="10341"></a> ..." Line: 1518 Column: 105 - 119
"...ule-9214"><a name="9214"></a> ..." Line: 1568 Column: 95 - 109
"...ule-9065"><a name="9065"></a><d..." Line: 1587 Column: 106 - 121
"...le-12250"><a name="12250"></a> <..." Line: 1659 Column: 72 - 86
"...ule-9545"><a name="9545"></a> ..." Line: 1713 Column: 95 - 110
"...le-10532"><a name="10532"></a> <..." Line: 1744 Column: 72 - 86
"...ule-9397"><a name="9397"></a> ..." Line: 1799 Column: 95 - 110
"...le-12465"><a name="12465"></a> <..." Line: 1913 Column: 101 - 116
"...le-11309"><a name="11309"></a> <..."

Attribute “r1:15” is not serializable as XML 1.0.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “8” is not serializable as XML 1.0.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “25” is not serializable as XML 1.0.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

Attribute “2017unat” is not serializable as XML 1.0.

Line: 1909 Column: 4 - 73
".../div> <div class="RightPane" id="RightPane" r1:15 PM 8/25/2017unat="server"></div>..."

The first occurrence of ID “main_content” was here.

Line: 710 Column: 1 - 68
"...iv></div> <div class="container" id="main_content" style="margin-bottom:0px;"> <div..."

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engineering.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.

engineering.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.

ENGINEERING.COM Engineering.com

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engineering.com desktop page speed rank

engineering.com Desktop Speed Test Quick Summary

priority - 58Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 563.9KiB (68% reduction).

priority - 18Leverage 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:

priority - 18Enable 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 171.1KiB (77% reduction).

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

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.

priority - 3Minify 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 30.8KiB (46% reduction).

priority - 3Minify 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 28KiB (23% reduction).

priority - 2Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 15.1KiB (27% reduction).

priority - 0Reduce server response time

In our test, your server responded in 0.25 seconds.

engineering.com Desktop Resource Breakdown

engineering.com mobile page speed rank

engineering.com Mobile Speed Test Quick Summary

priority - 60Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 586.2KiB (74% reduction).

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 29Leverage 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:

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.

priority - 18Enable 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 178.4KiB (77% reduction).

priority - 3Reduce server response time

In our test, your server responded in 0.41 seconds.

priority - 3Minify 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 28KiB (22% reduction).

priority - 2Minify 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 24.3KiB (41% reduction).

priority - 1Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 12.5KiB (26% reduction).

engineering.com Mobile Resource Breakdown

engineering.com mobile page usability

engineering.com Mobile Usability Test Quick Summary

priority - 2Size 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.

engineering.com HTML validation

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.

Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.

Bad value “PAGE-ENTER” for attribute “http-equiv” on element “meta”.

Attribute “name” not allowed on element “meta” at this point.

Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.