Hreflang bookmarklet

Copy the code below and paste it into your browser's bookmarks as a new bookmark:

javascript:(function(){var e=document.querySelectorAll('link[rel="alternate"][hreflang]');if(e.length===0)alert('No hreflang tags found on this page.');else{var t='<style>body{font-family:Arial, sans-serif;line-height:1.5;margin:20px;}table{border-collapse:collapse;width:100%;margin-top:20px;}th,td{border:1px solid #ccc;padding:8px;text-align:left;}th{background-color:#f4f4f4;}a{color:#007BFF;text-decoration:none;}a:hover{text-decoration:underline;}footer{margin-top:20px;font-size:0.9em;color:#555;}</style>';t+='<h1>Hreflang Tags Found</h1>';t+='<table><tr><th>Hreflang</th><th>URL</th></tr>';e.forEach(function(el){t+='<tr><td>'+el.getAttribute('hreflang')+'</td><td><a href="'+el.getAttribute('href')+'" target="_blank">'+el.getAttribute('href')+'</a></td></tr>'});t+='</table>';t+='<footer>Created by <a href="https://dergal.co.uk" target="_blank">Gerry White</a></footer>';var w=window.open('','_blank');w.document.open();w.document.write('<html><head><title>Hreflang Tags</title>'+t+'</head><body></body></html>');w.document.close();}})();

Once copied, save it as a bookmark in your browser. Clicking the bookmark on a webpage will display the hreflang tags in a new tab.

How do I add it as a bookmarklet ?

What does it do