SCIENCEDIRECT.COM ScienceDirect.com | Science, health and medical journals, full text articles and books.

sciencedirect.com Website Information

Daily Unique Visits: 5,423,012

Daily Page Views: 43,384,096

Income Per Day: $43,384

Estimated Value: $46,854,720

This website is located in United States and is using following IP address 198.81.200.2. See the complete list of popular websites hosted in United States.

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

Website sciencedirect.com is using the following name servers:

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and is probably hosted by LEVEL3 - Level 3 Communications, Inc., US. See the full list of other websites hosted by LEVEL3 - Level 3 Communications, Inc., US.

The highest website sciencedirect.com position in Alexa rank database was 140 and the lowest rank position was 1062. Current position of sciencedirect.com in Alexa rank database is 281.

Desktop speed score of sciencedirect.com (81/100) is better than the results of 75.25% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of sciencedirect.com (89/100) is better than the results of 45.16% of other sites and means that the page is mobile-friendly.

Mobile speed score of sciencedirect.com (72/100) is better than the results of 81.66% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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sciencedirect.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.


sciencedirect.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: SCIENCEDIRECT.COM
Registrar WHOIS Server: whois.safenames.net
Registrar URL: http://www.safenames.net
Updated Date: 2014-04-01T20:30:43Z
Created Date: 1997-03-12T05:00:00Z
Registrar Registration Expiration Date: 2016-03-13T04:00:00Z
Registrar: Safenames Ltd
Registrar IANA ID: 447
Registrar Abuse Contact Email: abuse@safenames.net
Registrar Abuse Contact Phone: +44.1908200022
Registrant Name: Domain Manager
Registrant Organisation: Elsevier Ltd
Registrant Address Line 1: The Boulevard
Registrant Address Line 2: Langford Lane, Kidlington
Registrant City: Oxfordshire
Registrant State/Province:
Registrant Postal Code: OX5 1GB
Registrant Country: UK
Registrant Phone: +44.1865843830
Registrant Fax: +44.1865853333
Registrant Email: domainsupport@elsevier.com
Admin Name: International Domain Administrator
Admin Organisation: Safenames Ltd
Admin Address Line 1: Safenames House, Sunrise Parkway
Admin Address Line 2:
Admin City: Milton Keynes
Admin State/Province: Bucks
Admin Postal Code: MK14 6LS
Admin Country: UK
Admin Phone: +44.1908200022
Admin Fax: +44.1908325192
Admin Email: domainsupport@elsevier.com
Tech Name: International Domain Tech
Tech Organisation: International Domain Tech
Tech Address Line 1: Safenames House, Sunrise Parkway
Tech Address Line 2:
Tech City: Milton Keynes
Tech State/Province: Bucks
Tech Postal Code: MK14 6LS
Tech Country: UK
Tech Phone: +44.1908200022
Tech Fax: +44.1908325192
Tech Email: tec@safenames.net
Name Server: dns1.idp365.net
Name Server: dns2.idp365.net
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/

Safenames - Experts in Global Domain Management and Online Brand Protection

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The Data in the Safenames Registrar WHOIS database is provided by Safenames for
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sciencedirect.com server information

Servers Location

sciencedirect.com desktop page speed rank

Last tested: 2016-06-12


Desktop Speed Medium
81/100

sciencedirect.com Desktop Speed Test Quick Summary


priority - 11 Reduce server response time

priority - 6 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://cdnjs.cloudflare.com/ajax/libs/classlist/2014.01.31/classList.min.js

Optimize CSS Delivery of the following:

http://sdfestaticassets-us-east-1.sciencedirectass…ylesheets/homepage.css
http://sdfestaticassets-us-east-1.sciencedirectass…a673e09a5fc9/style.css

priority - 3 Leverage browser caching

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http://assets.adobedtm.com/376c5346e33126fdb6b2dba…99b3bf1d427fc5bd286.js (expiration not specified)
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http://assets.adobedtm.com/376c5346e33126fdb6b2dba…08964746d4385002642.js (expiration not specified)
http://cdn.optimizely.com/js/204774041.js (2 minutes)
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priority - 1 Minify JavaScript

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priority - 0 Optimize images

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sciencedirect.com Desktop Resource Breakdown

Total Resources28
Number of Hosts16
Static Resources17
JavaScript Resources16
CSS Resources2

sciencedirect.com mobile page speed rank

Last tested: 2016-06-12


Mobile Speed Medium
72/100

sciencedirect.com Mobile Speed Test Quick Summary


priority - 24 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://cdnjs.cloudflare.com/ajax/libs/classlist/2014.01.31/classList.min.js

Optimize CSS Delivery of the following:

http://sdfestaticassets-us-east-1.sciencedirectass…ylesheets/homepage.css
http://sdfestaticassets-us-east-1.sciencedirectass…a673e09a5fc9/style.css

priority - 8 Reduce server response time

priority - 4 Leverage 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:

http://assets.adobedtm.com/376c5346e33126fdb6b2dba…99b3bf1d427fc5bd286.js (expiration not specified)
http://assets.adobedtm.com/376c5346e33126fdb6b2dba…bba80e13f4b6fa0dd7c.js (expiration not specified)
http://assets.adobedtm.com/376c5346e33126fdb6b2dba…08964746d4385002642.js (expiration not specified)
http://cdn.optimizely.com/js/204774041.js (2 minutes)
http://c.go-mpulse.net/boomerang/config.js?key=2FB…mory,CACHE_RELOAD,LOGN (5 minutes)
http://d6tizftlrpuof.cloudfront.net/live/resources…ktop_bottom_retina.png (60 minutes)

priority - 1 Minify 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 9.8KiB (17% reduction).

Minifying http://sdfestaticassets-us-east-1.sciencedirectass…1d/javascripts/home.js could save 9.8KiB (17% reduction) after compression.

priority - 0 Optimize images

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

Optimize the following images to reduce their size by 2KiB (57% reduction).

Losslessly compressing http://d6tizftlrpuof.cloudfront.net/live/resources…ktop_bottom_retina.png could save 2KiB (57% reduction).

sciencedirect.com Mobile Resource Breakdown

Total Resources27
Number of Hosts16
Static Resources16
JavaScript Resources16
CSS Resources2

sciencedirect.com mobile page usability

Last tested: 2016-06-12


Mobile Usability Good
89/100

sciencedirect.com Mobile Usability Test Quick Summary


priority - 7 Size 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 <button id="ccs-mobileHamburgerButton" class="link"></button> is close to 1 other tap targets.

The tap target <a href="http://www.sci…ub/chemicaleng">Chemical Engineering</a> and 33 others are close to other tap targets.

The tap target <a href="http://www.sci…jrnlallbooks/a" class="letter track-usage">A</a> and 25 others are close to other tap targets.
The tap target <a href="http://www.sci…nlallbooks/0-9" class="other track-usage">0-9</a> is close to 1 other tap targets.
The tap target <a href="http://www.els…/sciencedirect" class="link-inherit">About ScienceDirect</a> and 5 others are close to other tap targets.

priority - 3 Size 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 428 CSS pixels wide, but the viewport is only 411 CSS pixels wide. The following elements fall outside the viewport:

The element <span class="svg-hamburger-closed"> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="citation-title…on-open-access">open access</div> falls outside the viewport.
The element <div class="els-footer">ElsevierAbout…B.V.RELX Group</div> falls outside the viewport.

sciencedirect.com Mobile Resource Breakdown

Total Resources27
Number of Hosts16
Static Resources16
JavaScript Resources16
CSS Resources2

sciencedirect.com HTML validation

Errors

Bad value “navigation” for attribute “role” on element “ul”.

Line: 167 Column: 616 - 684
"...-sub-nav"><ul class="JournalsAndBooks els-header-navigation" role="navigation"><li cl..." Line: 167 Column: 2309 - 2377
"...ile-menu"><ul class="JournalsAndBooks els-header-navigation" role="navigation"><li cl..."

Bad value “” for attribute “aria-controls” on element “button”: An IDREFS value must contain at least one non-whitespace character.

Line: 167 Column: 1945 - 2053
"...r-button"><button id="ccs-mobileHamburgerButton" aria-controls="" aria-expanded="false" aria-label="Menu" class="link"><span ..."

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

Line: 167 Column: 2895 - 2944
"...ile-menu"><li class="els-header-icons-item els-header-user"><a hre..." Line: 167 Column: 3285 - 3323
"...></a></li><li class="Help els-header-icons-item"><a id=..."

Duplicate ID “els-header-user-sign-in”.

Line: 167 Column: 3075 - 3141
"...nIn_User"><span id="els-header-user-sign-in" class="els-header-user-sign-in">Sign i..."

Duplicate ID “els-header-user-sign-in-icon”.

Line: 167 Column: 3156 - 3261
"... in</span><span id="els-header-user-sign-in-icon" class="ccs-icon svg-sdfe-arrow-right els-header-user-icon-signin"></span..."

Bad value “” for attribute “autocomplete” on element “input”: Must not be empty.

Line: 191 Column: 29 - 140
"... <input aria-label="Search all fields" class="homesearch-quick-all js-focus" id="search-input" maxlength="250" name="qs" placeholder="Keywords" title="Search all fields" type="text" value="" autofocus autocomplete /> ..." Line: 194 Column: 29 - 128
"... <input maxlength="250" name="authors" placeholder="Author name" type="text" value="" autocomplete /> ..."

Attribute “title” not allowed on element “svg” at this point.

Line: 725 Column: 13 - 127
"... <svg title="Facebook" version="1.1" width="16" height="32" viewBox="12 2 16 32" xmlns="http://www.w3.org/2000/svg"> ..." Line: 730 Column: 13 - 126
"... <svg title="Twitter" version="1.1" width="32" height="32" viewBox="0 -1 32 32" xmlns="http://www.w3.org/2000/svg"> ..." Line: 738 Column: 13 - 125
"... <svg title="Google+" version="1.1" width="32" height="32" viewBox="0 0 24 18" xmlns="http://www.w3.org/2000/svg"> ..."

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

Line: 764 Column: 46 - 179
"...<noscript><img height="1" width="1" style="display:none;" src="https://www.facebook.com/tr?id=1086177924859222&amp;ev=PageView&amp;noscript=1"/></nosc..."

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

Line: 774 Column: 1 - 112
"...></div> <meta name="SDTech" content="Proudly brought to you by the SD Technology team in London, Dayton, and Amsterdam"> <scri..."

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

Line: 774 Column: 1 - 112
"...></div> <meta name="SDTech" content="Proudly brought to you by the SD Technology team in London, Dayton, and Amsterdam"> <scri..."

Warnings

The first occurrence of ID “els-header-user-sign-in” was here.

Line: 167 Column: 1352 - 1418
"...nIn_User"><span id="els-header-user-sign-in" class="els-header-user-sign-in">Sign i..."

The first occurrence of ID “els-header-user-sign-in-icon” was here.

Line: 167 Column: 1433 - 1538
"... in</span><span id="els-header-user-sign-in-icon" class="ccs-icon svg-sdfe-arrow-right els-header-user-icon-signin"></span..."

The “main” role is unnecessary for element “main”.

Line: 170 Column: 1 - 31
"... </div> <main class="main" role="main"> <..."

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

Line: 171 Column: 5 - 59
"...ain"> <a tabindex="-1" name="main_content" id="main_content"></a> ..." Line: 290 Column: 9 - 83
"...> <a tabindex="-1" name="physicalsciences-focus" id="physicalsciences-focus"></a> ..." Line: 380 Column: 9 - 75
"...> <a tabindex="-1" name="lifesciences-focus" id="lifesciences-focus"></a> ..." Line: 469 Column: 9 - 79
"...> <a tabindex="-1" name="healthsciences-focus" id="healthsciences-focus"></a> ..." Line: 560 Column: 9 - 99
"...> <a tabindex="-1" name="socialscienceshumanities-focus" id="socialscienceshumanities-focus"></a> ..."

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sciencedirect.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.


sciencedirect.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.