javascript:(function(){var oldBox=document.getElementById('headings-box');if(oldBox)oldBox.remove();var allHeadings=document.querySelectorAll('h1,h2,h3,h4,h5,h6');if(allHeadings.length===0){alert("No heading tags found.");return;}var grouped={H1:[],H2:[],H3:[],H4:[],H5:[],H6:[]};allHeadings.forEach(h=>{grouped[h.tagName].push(h.textContent.trim());});var box=document.createElement('div');box.id='headings-box';box.style.cssText='position:fixed;top:20px;right:20px;z-index:9999;background:white;border:1px solid #ccc;padding:15px;max-height:500px;overflow:auto;width:500px;font-family:sans-serif;font-size:14px;color:#333;box-shadow:0%204px%2012px%20rgba(0,0,0,0.15);';var%20close=document.createElement('div');close.innerHTML='%E2%9C%96';close.style.cssText='position:absolute;top:5px;right:10px;cursor:pointer;font-size:16px;';close.title='Close';close.onclick=()=%3Ebox.remove();box.appendChild(close);var%20content=document.createElement('div');content.style.marginTop='10px';Object.keys(grouped).forEach(tag=%3E{if(grouped[tag].length){var%20title=document.createElement('div');title.innerHTML='%3Cstrong%20style=%22font-size:15px;margin-top:10px;display:block;%22%3E'+tag+'%20Headings:%3C/strong%3E';content.appendChild(title);grouped[tag].forEach(text=%3E{var%20line=document.createElement('div');line.textContent='%E2%80%A2%20'+text;content.appendChild(line);});}});box.appendChild(content);document.body.appendChild(box);})();