The font (family) is a variant of Computer Modern. Computer Modern is, unfortunately, an extreme example of the problem where a font designed to compensate for ink spread on physical paper looks overly thin on a computer screen. It is also, unfortunately, one of the very few free fonts with good support for mathematics.
replydeleted
replyHave you tried enabling Reader Mode in your browser?
replyDoes not work nice with code blocks. But here's how you can add Javascript Snippets to every webpage via Tampermonkey:
reply // ==UserScript==
// @name JS Snippets
// @match *://*/*
// @grant GM_registerMenuCommand
// ==/UserScript==
GM_registerMenuCommand("Set font to default", () => {
document.querySelectorAll("body *:not(pre *)").forEach(el => {
el.style.fontFamily = "nonExistentFont";
});
});