crossref.org Website Information

Daily Unique Visits: 313,102

Daily Page Views: 2,504,816

Income Per Day: $2,505

Estimated Value: $2,705,400

crossref.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.

No name server records were found.

and is probably hosted by COLO-PREM-VZB - MCI Communications Services, Inc. d/b/a Verizon Business, US. See the full list of other websites hosted by COLO-PREM-VZB - MCI Communications Services, Inc. d/b/a Verizon Business, US.

The highest website crossref.org position in Alexa rank database was 4833 and the lowest rank position was 5936. Current position of crossref.org in Alexa rank database is 4867.

Desktop speed score of crossref.org (63/100) is better than the results of 39.87% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of crossref.org (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 crossref.org (52/100) is better than the results of 37.6% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

crossref.org 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.

crossref.org 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: CROSSREF.ORG
Registry Domain ID: D14383540-LROR
Registrar WHOIS Server: whois.register.com
Registrar URL: http://www.register.com
Updated Date: 2019-09-05T14:31:13Z
Creation Date: 1999-12-01T21:10:37Z
Registry Expiry Date: 2022-12-01T21:10:37Z
Registrar Registration Expiration Date:
Registrar: Register.com, Inc.
Registrar IANA ID: 9
Registrar Abuse Contact Email: abuse@web.com
Registrar Abuse Contact Phone: +1.8003337680
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: Crossref
Registrant State/Province: MA
Registrant Country: US
Name Server: NS-1052.AWSDNS-03.ORG
Name Server: NS-1629.AWSDNS-11.CO.UK
Name Server: NS-659.AWSDNS-18.NET
Name Server: NS-473.AWSDNS-59.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-04-27T04:36:52Z

crossref.org server information

Servers Location

crossref.org desktop page speed rank

Last tested: 2016-10-12

Desktop Speed Bad

63/100

crossref.org Desktop Speed Test Quick Summary

priority - 33Leverage 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://a16781.actonservice.com/cdnr/93/acton/bn/tracker/16781 (expiration not specified)
http://crossref.org/SpryAssets/SpryMenuBarDownHover.gif (expiration not specified)
http://crossref.org/SpryAssets/SpryMenuBarRightHover.gif (expiration not specified)
http://crossref.org/css/cookiecuttr.css (expiration not specified)
http://crossref.org/css/font-awesome.css (expiration not specified)
http://crossref.org/css/indexPg.css (expiration not specified)
http://crossref.org/imagesFooter/crfooter_10.gif (expiration not specified)
http://crossref.org/imagesFooter/f_about_cr-over.gif (expiration not specified)
http://crossref.org/imagesFooter/f_about_cr.gif (expiration not specified)
http://crossref.org/imagesFooter/f_fill.gif (expiration not specified)
http://crossref.org/imagesFooter/f_info_int-over.gif (expiration not specified)
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http://crossref.org/imagesFooter/f_info_lib-over.gif (expiration not specified)
http://crossref.org/imagesFooter/f_info_lib.gif (expiration not specified)
http://crossref.org/imagesFooter/f_info_pub-over.gif (expiration not specified)
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http://crossref.org/imagesFooter/f_info_res-over.gif (expiration not specified)
http://crossref.org/imagesFooter/f_info_res.gif (expiration not specified)
http://crossref.org/imagesFooter/f_mem_area-over.gif (expiration not specified)
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http://crossref.org/imagesFooter/f_sitemap-over.gif (expiration not specified)
http://crossref.org/imagesFooter/f_sitemap.gif (expiration not specified)
http://crossref.org/imagesHeader/contact_tab.gif (expiration not specified)
http://crossref.org/imagesHeader/cr_logotype.gif (expiration not specified)
http://crossref.org/imagesHeader/members_tab.gif (expiration not specified)
http://crossref.org/imagesIndex/Facebook_icon.gif (expiration not specified)
http://crossref.org/imagesIndex/LinkedIn_icon.gif (expiration not specified)
http://crossref.org/imagesIndex/SlideShare_icon.gif (expiration not specified)
http://crossref.org/imagesIndex/Twitter_icon.gif (expiration not specified)
http://crossref.org/imagesIndex/YouTube_icon.gif (expiration not specified)
http://crossref.org/imagesIndex/digits/a/0.png (expiration not specified)
http://crossref.org/imagesIndex/digits/a/1.png (expiration not specified)
http://crossref.org/imagesIndex/digits/a/5.png (expiration not specified)
http://crossref.org/imagesIndex/digits/a/7.png (expiration not specified)
http://crossref.org/imagesIndex/digits/a/8.png (expiration not specified)
http://crossref.org/imagesIndex/head_bottomcap.gif (expiration not specified)
http://crossref.org/imagesIndex/meetings_head.gif (expiration not specified)
http://crossref.org/imagesIndex/membership_head.gif (expiration not specified)
http://crossref.org/imagesIndex/metadataSearch.gif (expiration not specified)
http://crossref.org/imagesIndex/techresources_head.gif (expiration not specified)
http://crossref.org/js/buttonEvent.js (expiration not specified)
http://crossref.org/js/jquery.cookie.js (expiration not specified)
http://crossref.org/js/jquery.cookiecuttr.js (expiration not specified)
http://crossref.org/js/swapImage.js (expiration not specified)
http://www.crossref.org/GeneratedItems/CSScriptLib.js (expiration not specified)
http://www.crossref.org/SpryAssets/SpryMenuBar.js (expiration not specified)
http://www.crossref.org/SpryAssets/SpryMenuBarHorizontal.css (expiration not specified)
http://www.crossref.org/SpryAssets/SpryMenuBarRight.gif (expiration not specified)
http://www.crossref.org/css/master_ml.css (expiration not specified)
http://www.crossref.org/imagesFooter/f_continue.gif (expiration not specified)
http://www.crossref.org/imagesFooter/footer.js (expiration not specified)
http://www.crossref.org/imagesHeader/menu_affiliates.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_crossref.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_endcap_left.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_endcap_right.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_libraries.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_publishers.gif (expiration not specified)
http://www.crossref.org/imagesHeader/menu_researchers.gif (expiration not specified)
http://www.crossref.org/imagesIndex/full_link_count.jpg (expiration not specified)
http://www.crossref.org/imagesIndex/home_bullet.gif (expiration not specified)
http://www.crossref.org/rssdisplaybox/rssbox/rssdisplaybox.js (expiration not specified)
http://www.crossref.org/rssdisplaybox/rssbox/virtualpaginate.js (expiration not specified)
https://assets.crossref.org/logo/crossref-logo-100.svg (expiration not specified)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
http://www.google-analytics.com/ga.js (2 hours)

priority - 13Enable 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 122.5KiB (74% reduction).

Compressing http://crossref.org/css/font-awesome.css could save 22.8KiB (81% reduction).
Compressing http://crossref.org/ could save 19.6KiB (77% reduction).
Compressing http://www.crossref.org/SpryAssets/SpryMenuBar.js could save 15.3KiB (71% reduction).
Compressing http://www.crossref.org/css/master_ml.css could save 13.8KiB (76% reduction).
Compressing http://crossref.org/js/jquery.cookiecuttr.js could save 12.9KiB (80% reduction).
Compressing http://www.crossref.org/SpryAssets/SpryMenuBarHorizontal.css could save 7.3KiB (75% reduction).
Compressing http://www.crossref.org/rssdisplaybox/rssbox/rssdisplaybox.js could save 6.8KiB (69% reduction).
Compressing http://www.crossref.org/rssdisplaybox/rssbox/virtualpaginate.js could save 5.7KiB (71% reduction).
Compressing https://assets.crossref.org/logo/crossref-logo-100.svg could save 4.7KiB (71% reduction).
Compressing http://www.crossref.org/GeneratedItems/CSScriptLib.js could save 4.6KiB (67% reduction).
Compressing http://crossref.org/css/indexPg.css could save 2.6KiB (65% reduction).
Compressing http://a16781.actonservice.com/cdnr/93/acton/bn/tracker/16781 could save 1.8KiB (64% reduction).
Compressing http://crossref.org/js/jquery.cookie.js could save 1.8KiB (57% reduction).
Compressing http://crossref.org/css/cookiecuttr.css could save 1.7KiB (70% reduction).
Compressing http://crossref.org/js/swapImage.js could save 548B (51% reduction).
Compressing http://www.crossref.org/imagesFooter/footer.js could save 548B (51% reduction).

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 10 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js
http://crossref.org/js/jquery.cookie.js
http://crossref.org/js/jquery.cookiecuttr.js
http://www.crossref.org/SpryAssets/SpryMenuBar.js
http://www.crossref.org/imagesFooter/footer.js
http://www.crossref.org/GeneratedItems/CSScriptLib.js
http://www.crossref.org/rssdisplaybox/rssbox/virtualpaginate.js
http://www.crossref.org/rssdisplaybox/rssbox/rssdisplaybox.js
http://crossref.org/js/swapImage.js
http://crossref.org/js/buttonEvent.js

Optimize CSS Delivery of the following:

http://www.crossref.org/SpryAssets/SpryMenuBarHorizontal.css
http://www.crossref.org/css/master_ml.css
http://crossref.org/css/indexPg.css
http://crossref.org/css/font-awesome.css
http://crossref.org/css/cookiecuttr.css

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 27KiB (40% reduction).

Minifying http://www.crossref.org/SpryAssets/SpryMenuBar.js could save 7.5KiB (35% reduction).
Minifying http://crossref.org/js/jquery.cookiecuttr.js could save 7KiB (44% reduction).
Minifying http://www.crossref.org/rssdisplaybox/rssbox/rssdisplaybox.js could save 5.6KiB (57% reduction).
Minifying http://www.crossref.org/rssdisplaybox/rssbox/virtualpaginate.js could save 3.8KiB (48% reduction).
Minifying http://crossref.org/js/jquery.cookie.js could save 1.4KiB (46% reduction).
Minifying http://www.crossref.org/GeneratedItems/CSScriptLib.js could save 1.1KiB (17% reduction).
Minifying http://a16781.actonservice.com/cdnr/93/acton/bn/tracker/16781 could save 657B (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 18.8KiB (32% reduction).

Minifying http://crossref.org/css/font-awesome.css could save 6.3KiB (23% reduction).
Minifying http://www.crossref.org/css/master_ml.css could save 6.2KiB (35% reduction).
Minifying http://www.crossref.org/SpryAssets/SpryMenuBarHorizontal.css could save 5.3KiB (55% reduction).
Minifying http://crossref.org/css/indexPg.css could save 1KiB (26% reduction).

priority - 2Optimize images

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

Optimize the following images to reduce their size by 11.2KiB (52% reduction).

Compressing https://www.google.com/cse/static/en/google_custom_search_watermark.gif could save 1.4KiB (69% reduction).
Compressing http://crossref.org/imagesFooter/crfooter_10.gif could save 1.2KiB (87% reduction).
Compressing http://crossref.org/imagesIndex/techresources_head.gif could save 1.2KiB (37% reduction).
Compressing http://crossref.org/imagesIndex/metadataSearch.gif could save 1.2KiB (63% reduction).
Compressing http://crossref.org/imagesIndex/SlideShare_icon.gif could save 1.1KiB (71% reduction).
Compressing http://crossref.org/imagesIndex/YouTube_icon.gif could save 1.1KiB (71% reduction).
Compressing http://crossref.org/imagesIndex/LinkedIn_icon.gif could save 1.1KiB (73% reduction).
Compressing http://crossref.org/imagesIndex/Twitter_icon.gif could save 1.1KiB (73% reduction).
Compressing http://crossref.org/imagesIndex/Facebook_icon.gif could save 1.1KiB (72% reduction).
Compressing http://crossref.org/imagesIndex/membership_head.gif could save 855B (16% reduction).

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 4.8KiB (20% reduction).

Minifying http://crossref.org/ could save 4.8KiB (20% reduction).

crossref.org Desktop Resource Breakdown

Total Resources	86
Number of Hosts	15
Static Resources	73
JavaScript Resources	19
CSS Resources	6

crossref.org mobile page speed rank

Last tested: 2016-10-12

Mobile Speed Bad

52/100

crossref.org Mobile Speed Test Quick Summary

priority - 49Leverage 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 - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 13Enable 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 122.5KiB (74% reduction).

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 27KiB (40% 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 18.8KiB (32% reduction).

priority - 2Optimize images

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

Optimize the following images to reduce their size by 11.2KiB (52% reduction).

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 4.8KiB (20% reduction).

Minifying http://crossref.org/ could save 4.8KiB (20% reduction).

crossref.org Mobile Resource Breakdown

Total Resources	87
Number of Hosts	15
Static Resources	74
JavaScript Resources	19
CSS Resources	6

crossref.org mobile page usability

Last tested: 2016-10-12

Mobile Usability Bad

62/100

crossref.org 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.

We use cookies…sonal details. renders only 5 pixels tall (13 CSS pixels).

ACCEPT COOKIES renders only 5 pixels tall (13 CSS pixels).

DECLINE COOKIES renders only 5 pixels tall (13 CSS pixels).

What are cookies? renders only 5 pixels tall (13 CSS pixels).

Crossref Commu…- 8th Sep 2016 and 22 others render only 4 pixels tall (11 CSS pixels).

Follow us on: renders only 4 pixels tall (11 CSS pixels).

Search Crossre…er their DOIs. renders only 4 pixels tall (10 CSS pixels).

Help! Example queries and 1 others render only 4 pixels tall (10 CSS pixels).

We are Crossre…ommunications. and 1 others render only 5 pixels tall (13 CSS pixels).

CrossMark: Cite with Certainty renders only 7 pixels tall (18 CSS pixels).

Your browser d…ats available. renders only 5 pixels tall (14 CSS pixels).

Click here to…t HTML5 video. renders only 5 pixels tall (14 CSS pixels).

DOI® and DOI.O…ghts Reserved. renders only 3 pixels tall (8 CSS pixels).

priority - 16Size 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="#accept" class="cc-cookie-accept">ACCEPT COOKIES</a> is close to 1 other tap targets.

The tap target <a href="http://www.all…utcookies.org/">What are cookies?</a> and 1 others are close to other tap targets.

The tap target <a href="#" class="MenuBarItemSub…BarItemSubmenu"></a> is close to 1 other tap targets.

The tap target <a href="https://youtu.be/OpQzc5vBNww">Crossref Commu…- 8th Sep 2016</a> and 22 others are close to other tap targets.

The tap target <input type="text" name="q"> is close to 1 other tap targets.

The tap target <input type="submit" name="sa"> is close to 1 other tap targets.

The tap target <a href="https://twitte…om/Crossreforg"></a> and 4 others are close to other tap targets.

The tap target <button id="metaButton" type="submit"></button> is close to 1 other tap targets.

The tap target <a href="http://search.…rg/help/search">Help! Example queries</a> and 1 others are close to other tap targets.

The tap target <a href="01company/02history.html"></a> and 2 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.

crossref.org HTML validation

Errors

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Line: 8 Column: 5 - 55
"...h" /> <meta http-equiv="content-language" content="en" /> <..."

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

Line: 15 Column: 5 - 53
"...7" /> <meta name="twitter:label1" value="Reading time"> <..." Line: 16 Column: 5 - 56
"...ime"> <meta name="twitter:data1" value="1 minute read 🕑"> ..."

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

Line: 15 Column: 5 - 53
"...7" /> <meta name="twitter:label1" value="Reading time"> <..." Line: 16 Column: 5 - 56
"...ime"> <meta name="twitter:data1" value="1 minute read 🕑"> ..."

Bad value “feed” for attribute “rel” on element “link”: The string “feed” is not a registered keyword.

Line: 41 Column: 5 - 115
"... <link href="https://www.crossref.org/index.xml" rel="feed" type="application/atom+xml" title="Crossref Feed" /> <..." Line: 43 Column: 5 - 108
"...ef"/> <link href="https://www.crossref.org/index.xml" rel="feed" type="application/rss+xml" title="Crossref"/> ..."

Bad value “textxx” for attribute “type” on element “input”.

Line: 831 Column: 27 - 143
"... <input id="metadatasearchbox" name="q" placeholder="Title, Author, DOI, etc" type="textxx" class="input-lg" value=""> ..."

Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.

Line: 831 Column: 27 - 143
"... <input id="metadatasearchbox" name="q" placeholder="Title, Author, DOI, etc" type="textxx" class="input-lg" value=""> ..."

The element “button” must not appear as a descendant of the “a” element.

Line: 1058 Column: 60 - 67
"...bership/'><button>Join t..."

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

Line: 1145 Column: 1 - 9
"... </div> </footer> ..."

Unclosed element “div”.

Line: 1075 Column: 3 - 25
"...ooter'> <div class="container"> <..."

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

Line: 1151 Column: 12 - 68
"... <img class="footer-svg cc" src="/images/footer/cc.svg" /></i><i..." Line: 1151 Column: 73 - 129
"...vg" /></i><img class="footer-svg by" src="/images/footer/by.svg" /> The c..."

Stray end tag “i”.

Line: 1151 Column: 69 - 72
"...cc.svg" /></i><img c..."

Warnings

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 812 Column: 14 - 34
"... <section id="search"> ..."

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crossref.org 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.

crossref.org 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.

CROSSREF.ORG You are Crossref - Crossref

crossref.org Website Information

Advertisement

crossref.org Alexa Rank

crossref.org whois

crossref.org server information

Servers Location

crossref.org desktop page speed rank

crossref.org Desktop Speed Test Quick Summary

priority - 33Leverage 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 - 13Enable 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 122.5KiB (74% reduction).

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 10 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

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 27KiB (40% 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 18.8KiB (32% reduction).

priority - 2Optimize images

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

Optimize the following images to reduce their size by 11.2KiB (52% reduction).

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 4.8KiB (20% reduction).

crossref.org Desktop Resource Breakdown

crossref.org mobile page speed rank

crossref.org Mobile Speed Test Quick Summary

priority - 49Leverage 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 - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 13Enable 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 122.5KiB (74% reduction).

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 27KiB (40% 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 18.8KiB (32% reduction).

priority - 2Optimize images

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

Optimize the following images to reduce their size by 11.2KiB (52% reduction).

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 4.8KiB (20% reduction).

crossref.org Mobile Resource Breakdown

crossref.org mobile page usability

crossref.org 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.

priority - 16Size 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.

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.

crossref.org HTML validation

Errors

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

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

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

Bad value “feed” for attribute “rel” on element “link”: The string “feed” is not a registered keyword.

Bad value “textxx” for attribute “type” on element “input”.

Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.

The element “button” must not appear as a descendant of the “a” element.

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

Unclosed element “div”.

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

Stray end tag “i”.