javascript: (function() { function R(w) { try { var d = w.document, j, i, t, T, N, b, r = 1, C; for (j = 0; t = ["object", "embed", "applet", "iframe"][j]; ++j) { T = d.getElementsByTagName(t); for (i = T.length - 1; (i + 1) && (N = T[i]); --i) if (j != 3 || !R((C = N.contentWindow) ? C : N.contentDocument.defaultView)) { b = d.createElement("div"); b.style.width = N.width; b.style.height = N.height; b.innerHTML = "<del>" + (j == 3 ? "third-party " + t : t) + "</del>"; N.parentNode.replaceChild(b, N); } } } catch (E) { r = 0 } return r } R(self); var i, x; for (i = 0; x = frames[i]; ++i) R(x) })(); javascript: (function() { var newSS, styles = '* { background: #f9f9f9 ! important; color: black !important; text-shadow: none !important } :link, :link * { color: #0000EE !important } :visited, :visited * { color: #551A8B !important }'; if (document.createStyleSheet) { document.createStyleSheet("javascript:'" + styles + "'"); } else { newSS = document.createElement('link'); newSS.rel = 'stylesheet'; newSS.href = 'data:text/css,' + escape(styles); document.getElementsByTagName("head")[0].appendChild(newSS); } })(); javascript: (function() { var d = document; function K(N, w) { var nn = d.createElement(w), C = N.childNodes, i; for (i = C.length - 1; i >= 0; --i) nn.insertBefore(C[i], nn.childNodes[0]); N.parentNode.replaceChild(nn, N); } function Z(t, w) { var T = document.getElementsByTagName(t), j; for (j = T.length - 1; j >= 0; --j) K(T[j], w); } Z("blink", "span"); Z("marquee", "div"); })(); javascript: (function() { var H = ["mouseover", "mouseout", "unload", "resize"], o = window.opera; if (document.addEventListener /MOZ/ && !o) for (j in H) document.addEventListener(H[j], function(e) { e.stopPropagation(); }, true); else if (window.captureEvents /NS4/ && !o) { document.captureEvents(-1 /ALL/ ); for (j in H) window["on" + H[j]] = null; } else /IE/ { function R(N) { var i, x; for (j in H) if (N["on" + H[j]] /NOT TEXTNODE/ ) N["on" + H[j]] = null; for (i = 0; x = N.childNodes[i]; ++i) R(x); } R(document); } })(); javascript: (function() { var c, tID, iID; tID = setTimeout(function() {}, 0); for (c = 1; c < 1000 && c <= tID; ++c) clearTimeout(tID - c); iID = setInterval(function() {}, 1000); for (c = 0; c < 1000 && c <= iID; ++c) clearInterval(iID - c); })();

I did not write this and I do not remember where I got it from.

There's also the Just Read extension (https://justread.link/), which is quite nice.