Search Regex in Chrome/Firefox - Bookmark URL

// Add the following to bookmarks to get regex search with highlighting.
// You can also see the matches in console, with the ability to scroll into viewport on right click in some browsers.

javascript:(function(){Array.from(document.getElementsByClassName('ext-search-match')).forEach(x=>{x.insertAdjacentText('afterend',x.textContent);x.remove()});const r=prompt('Regex search: (preceed with $ for case insensitive)'),i=r.length&&r[0]==='$',p=new RegExp(i?r.substring(1):r,i?'gi':'g'),all=document.querySelectorAll('*');all.forEach(el=>{if(el.tagName==='SCRIPT'||el.tagName==='STYLE')return;for(let n of el.childNodes){if(n.nodeType===3){const v=n.nodeValue;if(p.test(v)){console.log("Found a match:",el,"Content:",el.textContent);c=el.childNodes.length>1?document.createElement('span'):el;c.innerHTML=v.replace(p,'<span style="background-color:red;" class="ext-search-match">$&</span>');c!==el&&el.replaceChild(c,n);}}}})})()

// Formatted
javascript:(function(){
    Array.from(document.getElementsByClassName('ext-search-match')).forEach(x => {
        x.insertAdjacentText('afterend', x.textContent);
        x.remove()
    });

    const
        r=prompt('Regex search: (preceed with $ for case insensitive)'),

        i=r.length&&r[0]==='$',

        p=new RegExp(i?r.substring(1):r, i?'gi':'g'),

        all=document.querySelectorAll('*');

    all.forEach(el => {
        if(el.tagName === 'SCRIPT' || el.tagName === 'STYLE')
            return;

        for(let n of el.childNodes) {
            if(n.nodeType === 3) {
                const v = n.nodeValue;
                if(p.test(v)) {
                    console.log("Found a match:", el, "Content: ", el.textContent);
                    c = el.childNodes.length > 1 ? document.createElement('span') : el;
                    c.innerHTML = v.replace(p,'<span style="background-color:red;" class="ext-search-match">$&</span>');
                    c !== el && el.replaceChild(c, n);
                }
            }
        }
    })
})()