Redact all text in a website

redact.js

// This script will inject a specific font from google fonts (this one https://fonts.google.com/specimen/Redacted) and will force all text in a page to use it.
// It's a bit easier than changing all the text-nodes from the page into unicode "blocks", and a lot less resource intensive.

// In case you want to have a bookmark, you can do
// javascript:const injectCSS=()=>{let n=document.createElement("style");return n.type="text/css",n.innerText="\n/* latin-ext */\n@font-face {\n  font-family: 'Redacted';\n  font-style: normal;\n  font-weight: 400;\n  font-display: swap;\n  src: url(https://fonts.gstatic.com/s/redacted/v6/Z9XVDmdRShme2O_7aLTX6OymlLGDzCs.woff2) format('woff2');\n  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;\n}\n/* latin */\n@font-face {\n  font-family: 'Redacted';\n  font-style: normal;\n  font-weight: 400;\n  font-display: swap;\n  src: url(https://fonts.gstatic.com/s/redacted/v6/Z9XVDmdRShme2O_7aLTZ6OymlLGD.woff2) format('woff2');\n  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;\n}\n\n* {\n  font-family: 'Redacted' !important;\n}\n",document.head.appendChild(n),n};injectCSS();
// 
// 

const injectCSS = () => {
  const css = `
/* latin-ext */
@font-face {
  font-family: 'Redacted';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/redacted/v6/Z9XVDmdRShme2O_7aLTX6OymlLGDzCs.woff2) format('woff2');
  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Redacted';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/redacted/v6/Z9XVDmdRShme2O_7aLTZ6OymlLGD.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

* {
  font-family: 'Redacted' !important;
}
`
  let el = document.createElement('style');
  el.type = 'text/css';
  el.innerText = css;
  document.head.appendChild(el);
  return el;
};
injectCSS()