www.pubmedcentral.nih.gov site info, backlinks, seo

www.pubmedcentral.nih.gov - home - pmc - ncbi

www.pubmedcentral.nih.gov scores a 6,3 out of 10 on our optimalisation scale. This is a little above average. We have identified 145 keywords. This page seems optimized for the keyword 'ncbi'

summary

This is the summary of our www.pubmedcentral.nih.gov analysis. Please check for detailed info under their tabs.

www.pubmedcentral.nih.gov navigation and internal link structure

We have scanned www.pubmedcentral.nih.gov for internal links and found 247 links on this page. We found 19 base folders and 34 folders on this site. Easy to follow navigation helps your visitors navigate through your website efficiently and improves the website experience. It is even more important for seach engines while it helps them spider your website and find the most important content.

We found an easy to follow navigation structure on www.pubmedcentral.nih.gov

Internal links found

Click on any of the links below to analyze that page

www.pubmedcentral.nih.gov html info

HTML stands for Hypertext Markup Language, a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.

Html / text ratio

Try to keep your html as short as possible. Html only describes your content. There is no benefit in having a page with lots of html tags. A bloated page will slow down your site and harm user experience.

The html ratio of this page is 5,2

Page Errors

Html errors at best slow down your website (since a browser has to guess at the meaning) and in worst case render your page unviewable. Therefor make shure there are no html errors on your page !

Repair broken html

Backlink analysis for www.pubmedcentral.nih.gov

Backlinks leading into a domain are of great important for the search engine results of a page. Each link from a website counts as a 'vote' for that websites. Links from trusted, related and high quality domains have more weight then other links.
Gathering links is often referred to as link building. If you do not have enought quility links to a domain you better start to build those links !

There are currently 0 links leading into www.pubmedcentral.nih.gov There are a below average amount of backinks. Link building should be a priority for this site. Try to get links from hight quality websites to your site.

Links to external pages from www.pubmedcentral.nih.gov

www.pubmedcentral.nih.gov server info

A good server setup can make a huge difference for website performance and may even enhance the ratings in the search engine results since page speed has become an issue.

Http request info

Server headers

Server headers are the response the server sends before the actual content. A correct server setup can speed up a site and free up server resources. Make sure that all headers are set correct. For example dont cache dynamic content and dont close connections unless there is a good reason.

Server location

Server location is important because a server that is located near the customer will serve pages faster then a server located far away

www.pubmedcentral.nih.gov stylesheet info

Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation semantics (the look and formatting) of a document written in a markup language.

Stylesheets in the head of the document

The following css files were found on www.pubmedcentral.nih.gov:

http://www.pubmedcentral.nih.gov//static.pubmed.gov/portal/portal3rc.fcgi/3467497/css/3392652/3418010.css
http://www.pubmedcentral.nih.gov//static.pubmed.gov/portal/portal3rc.fcgi/3467497/css/31982.css
http://www.pubmedcentral.nih.gov//static.pubmed.gov/portal/portal3rc.fcgi/3501950/css/1123698/3357458/3431425/3398623/3357461/3395415/3316/3326508/14534/3393491/1049547/901185/12930/3317824/3317819/3331221/31867/3317825/3317918/3411348.css
http://www.pubmedcentral.nih.gov//static.pubmed.gov/portal/portal3rc.fcgi/3501950/css/2323579/31982.css

r-domain advises to combine all stylesheets to one compressed stylesheet. Adding multiple stylesheets to your page can seriously slow down your website. Compressing your stylehseet can speed up your page

www.pubmedcentral.nih.gov inline stylesheet info

No inline css was detected on this page

www.pubmedcentral.nih.gov javascript info

Javascript is a scripting language to enable Web authors to design interactive sites. On this page we found 4 external javascripts and 4 internal javascripts on www.pubmedcentral.nih.gov

Javascripts in the head of the page

The following js files were found on this page:

http://www.pubmedcentral.nih.gov//static.pubmed.gov/core/jig/1.11/js/jig.min.js
http://www.pubmedcentral.nih.gov/portal/portal3rc.fcgi/rlib/js/instrumentomniturebasejs/instrumentncbibasejs/instrumentpagestarterjs.js?v=1
http://www.pubmedcentral.nih.gov/portal/js/portal.js?v3%2e1%2er356352%3a+wed%2c+apr+04+2012+12%3a48%3a58
http://www.pubmedcentral.nih.gov//static.pubmed.gov/portal/portal3rc.fcgi/3501950/js/3427174/1997283/3302/30161/3363658/35426.js

r-domain advises to combine all javascript to one javascript. Javascripts normally are loaded before the page is displayed. Adding multiple javascript to your page can seriously slow down your website.

www.pubmedcentral.nih.gov inline javascript info

var ncbi_starttime = new date();

<!--
var scripturl = 'http://www.ncbi.nlm.nih.gov/pmc';
var scriptpath = '/portal/';
var objhierarchy = {"name":"entrezsystem2","type":"layout","realname":"entrezsystem2",
"children":[{"name":"entrezsystem2.pentrez","type":"cluster","realname":"entrezsystem2.pentrez",
"children":[{"name":"entrezsystem2.pentrez.dbconnector","type":"portlet","realname":"entrezsystem2.pentrez.dbconnector","shortname":"dbconnector"},
{"name":"entrezsystem2.pentrez.paramcontainer","type":"portlet","realname":"entrezsystem2.pentrez.paramcontainer","shortname":"paramcontainer"},
{"name":"entrezsystem2.pentrez.myncbi","type":"portlet","realname":"entrezsystem2.pentrez.myncbi","shortname":"myncbi"},
{"name":"entrezsystem2.pentrez.userpreferenceurlparamcontainer","type":"portlet","realname":"entrezsystem2.pentrez.userpreferenceurlparamcontainer","shortname":"userpreferenceurlparamcontainer"},
{"name":"entrezsystem2.pentrez.gridproperty","type":"portlet","realname":"entrezsystem2.pentrez.gridproperty","shortname":"gridproperty"},
{"name":"entrezsystem2.pentrez.pmc","type":"cluster","realname":"entrezsystem2.pentrez.pmc",
"children":[{"name":"entrezsystem2.pentrez.pmc.noportlet","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.noportlet","shortname":"noportlet"},
{"name":"entrezsystem2.pentrez.pmc.pmc_pagecontroller","type":"portlet","realname":"entrezsystem2.pentrez.pmc.pmc_pagecontroller","shortname":"pmc_pagecontroller"},
{"name":"entrezsystem2.pentrez.pmc.pmc_searchbar","type":"portlet","realname":"entrezsystem2.pentrez.pmc.pmc_searchbar","shortname":"pmc_searchbar"},
{"name":"entrezsystem2.pentrez.pmc.entrez_botrequest","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.entrez_botrequest","shortname":"entrez_botrequest"},
{"name":"entrezsystem2.pentrez.pmc.pmc_limitstab","type":"portlet","realname":"entrezsystem2.pentrez.pmc.pmc_limitstab","shortname":"pmc_limitstab"},
{"name":"entrezsystem2.pentrez.pmc.entrez_facets","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.entrez_facets","shortname":"entrez_facets"},
{"name":"entrezsystem2.pentrez.pmc.entrez_clipboard","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.entrez_clipboard","shortname":"entrez_clipboard"},
{"name":"entrezsystem2.pentrez.pmc.pmc_staticparts","type":"portlet","realname":"entrezsystem2.pentrez.pmc.pmc_staticparts","shortname":"pmc_staticparts"},
{"name":"entrezsystem2.pentrez.pmc.entrez_messages","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.entrez_messages","shortname":"entrez_messages"},
{"name":"entrezsystem2.pentrez.pmc.pafjscheck","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.pafjscheck","shortname":"pafjscheck"},
{"name":"entrezsystem2.pentrez.pmc.ncbifooter_dynamic","type":"cluster","realname":"entrezsystem2.pentrez.pmc.entrez_database.ncbifooter_dynamic",
"children":[{"name":"entrezsystem2.pentrez.pmc.ncbifooter_dynamic.ncbibreadcrumbs","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.ncbifooter_dynamic.ncbibreadcrumbs","shortname":"ncbibreadcrumbs"},
{"name":"entrezsystem2.pentrez.pmc.ncbifooter_dynamic.ncbihelpdesk","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.ncbifooter_dynamic.ncbihelpdesk","shortname":"ncbihelpdesk"},
{"name":"entrezsystem2.pentrez.pmc.ncbifooter_dynamic.ncbiapplog_noscript_ping","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.ncbifooter_dynamic.ncbiapplog_noscript_ping","shortname":"ncbiapplog_noscript_ping"}]},
{"name":"entrezsystem2.pentrez.pmc.browsercheck","type":"portlet","realname":"entrezsystem2.pentrez.pmc.entrez_database.browsercheck","shortname":"browsercheck"},
{"name":"entrezsystem2.pentrez.pmc.pmc_homepage","type":"cluster","realname":"entrezsystem2.pentrez.pmc.pmc_homepage",
"children":[{"name":"entrezsystem2.pentrez.pmc.pmc_homepage.pmc_homepagecontent","type":"portlet","realname":"entrezsystem2.pentrez.pmc.pmc_homepage.pmc_homepagecontent","shortname":"pmc_homepagecontent"}]}]}]}]};
-->

var objectlinks=[{i:0, ename: "p$exl", esid:"*", sname: "p$exl", ssid:"*", dname:"p$el", dsid:"0",m:"copyvalue",p:[],f: function(src, dst) {fn_copyvalue(src, dst);}}]


var activenames = {"p$exl":1, "entrezsystem2.pentrez.dbconnector.cmd":0, "entrezsystem2.pentrez.dbconnector.db":0, "entrezsystem2.pentrez.dbconnector.idsfromresult":0, "entrezsystem2.pentrez.dbconnector.lastdb":0, "entrezsystem2.pentrez.dbconnector.lastidsfromresult":0, "entrezsystem2.pentrez.dbconnector.lastquerykey":0, "entrezsystem2.pentrez.dbconnector.lasttabcmd":0, "entrezsystem2.pentrez.dbconnector.linkname":0, "entrezsystem2.pentrez.dbconnector.linkreadablename":0, "entrezsystem2.pentrez.dbconnector.linksrcdb":0, "entrezsystem2.pentrez.dbconnector.querykey":0, "entrezsystem2.pentrez.dbconnector.tabcmd":0, "entrezsystem2.pentrez.dbconnector.term":0, "entrezsystem2.pentrez.pmc.pmc_pagecontroller.previouspagename":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.advanced":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.currdb":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.limitslink":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.search":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.searchresourcelist":0, "entrezsystem2.pentrez.pmc.pmc_searchbar.term":0};

function getcookie(cookie_name) {
var start_pos = document.cookie.indexof(cookie_name + "="); //start of our cookie name
if (start_pos != -1) {
start_pos = start_pos + cookie_name.length+1; //start of cookie value
var end_pos = document.cookie.indexof(";", start_pos);
if (end_pos == -1) {
end_pos = document.cookie.length;
}
//return all values of our cookie
return decodeuricomponent(document.cookie.substring(start_pos, end_pos));
}
else {
return "";
}
}

var c = getcookie('webcubbyuser');
c = decodeuricomponent(decodeuricomponent(c)); //ugh
lre = /.*logged-in\=(\w*);.*/;
ure = /.*my-name\=([\w|\-|\.|\ |\@|\+]*);.*/;

if(c){
l = lre.exec( c );
if(l) {
if(l[1]) {
if(l[1] === 'true'){
u = ure.exec( c );
if(u[1]){
var myncbi_username = document.getelementbyid("myncbiusername");
if (myncbi_username) {
if (typeof myncbi_username != 'undefined') {
myncbi_username.appendchild(document.createtextnode(u[1]));
myncbi_username.style.display = "inline";

var signin = document.getelementbyid("sign_in");
signin.style.display = "none";

var signout = document.getelementbyid("sign_out");
signout.style.display = "inline";
}
}
}
}
}
}
}

(function( $ ){ // pass in $ to self exec anon fn
// on page ready
$( function() {
if (typeof $.fn.ncbipopper == "function") {
$('#info .external').each( function(){
var $this = $( this );
var popper = $this;
popper.ncbipopper({
destselector: '#external-disclaimer',
isdestelementcloseclick: false,
openanimation: 'none',
closeanimation: 'none',
istriggerelementcloseclick: false,
triggerposition: 'bottom center',
destposition: 'top center',
hasarrow: true,
arrowdirection: 'top'
});
}); // end each loop
}
});// end on page ready
})( jquery );

www.pubmedcentral.nih.gov content analysis

On this page the content of www.pubmedcentral.nih.gov is analyzed for internal coherence. In other words: r-domain checks if elements on the site (headings, meta tags, link anchor text etc) are in sync with the rest of the contents of the page. Any element on a page should reflect to some degree the main subject of the page.

If an elemts matches the most important content of the page is is displayed in green. If it does not match is is displayed in red

Domain

Head

The head element is a container for all the elements int he head of a page. Elements inside head can fort example include scripts, instruct the browser where to find style sheets, provide meta information. We analyzed the follwoing tags in the head section: <title>, <link>, <meta>,<script>, and <style>.

Content

Content is the most important thing on a website. Content can be indexed by seach engines. They provide most of a websites traffic. Tags such as headings (h1 .. h6), paragraphs (p) can be used to structure the text on the page. Tags as bold (b / strong) or italic (i / em) can be used the empasize important text. Images can be used to further explain or just to brighten up a page and can be describud using the alt tag. Links can be used to direct users to another page. All elements have in common that they use text and text can be indexed !

www.pubmedcentral.nih.gov seo score expained

Below are the scores we calculated for different parts of www.pubmedcentral.nih.gov.

If any score is below 100 optimalisation is possible. If any score is below 40 improving this score should be a priority. Not all scores are weighted equally in our final SEO score. More detailed information for any suggestion can be count under the tabs. Relatively unimportant optimalisation tips are not included in this summary.

	Item	Score	Factor	Suggestion
	PageTitle	100	0,3	Far too many sites lack a page title. A page title is the first thing that shows in the search results so always use the title element.
	Title relevance	87	2,3	A title should reflect the contents of a site. This site has a 67 % match
	Title Length	10	0,7	Try to keep your title between 40 and 66 characters. Your title was 18 characters long
	Meta Description	0	0,2	A meta description is the second thing that shows in the search results so always use the meta description.
	Meta Description Length	0	0,7	The meta description should be between 145 and 160 characters. This meta description was 1 characters long
	Meta description relevance	0	0,7	Meta Description should reflect the contents of a site. This site has a 0 % match
	Number of internal links	50	3,3	Linking to internal pages makes pages easier to find for search engines. Try to keep the number of links on your page roughly below 100. There are 247 internal links on this page.
	Folder structure	100	1,4	We found a folder structure in the links on your page. A good folder structure makes a site easier to navigate. We found 19 level 1 folders and 34 folders above or in the first level of navigation.
	Headings	90	1,6	Headers should reflect the contents of a site. This site has a 50 % match
	Links	100	1,6	Link anchors should to some degree reflect the contents of a site. This site has a 65 % match
	Image alt tags	100	0,5	Image alt tags should to some degree reflect the contents of a site. This site has a 43 % match
	Html ratio	40	1,1	Try to keep the html / text ratio as low as possible. More html means longer loading times. Layout should be handled in a serpate css file
	Page errors	49	2	If this score is not 100 check the html very carefully. We found 102 errors and warnings
	WordCount	55	1,1	An ideal page contains between 400 and 600 words.This page contains 1016 words