This is a small script that will basically crawl a page and log the names and values of: -Title -Metas -Links You can add values to the check Object for specific metas to show. The showAll flag can be turned on to show all the links, metas and the title tag. The ommit Object can contains metas and links that you want to exclude (even if showAll …

SEO meta tag helper

var check = {
  description : 'Description',
	title : 'Title',
	image : 'Image',
	canonical : 'Canonical',
	'og:image' : 'Open graph image',
	'twitter:image' : 'Twitter Image'

},
ommit = {
	stylesheet : 'styles'
},
showAll = false,
metaTags = document.getElementsByTagName('meta'),
linkTags = document.getElementsByTagName('link');


function _undefined(key, collection){
	return (typeof collection[key] == 'undefined')? true: false;
}

for(var i=0;i<metaTags.length;i++){
	var name = metaTags[i].name || metaTags[i].getAttribute('property');
	if( (!_undefined(name, check) || showAll) && _undefined(name, ommit) ){
		console.log( (check[ name ] || name) + ': ' + metaTags[i].content );
	}
}

for(var i=0;i<linkTags.length;i++){
	var name = check[linkTags[i].rel] || linkTags[i].rel;
	if( (!_undefined(linkTags[i].rel, check) || showAll ) && _undefined(linkTags[i].rel, ommit ) ){
		console.log(name + ': ' +linkTags[i].href);
	}
}

titleTag = document.getElementsByTagName('title');
console.log('Title: ' + titleTag[0].innerText)