Get Sendage sends as JSON for backup, analysis etc.

sendage.js

/**
 * Usage: 
 * 1) Edit the username
 * 2) Open https://sendage.com (required due to same origin policy) 
 * 3) Paste the following into into your browser developer tools console.
 *    It only finds public data. You don't have to be logged in. Use a private/incognito window if you like, it's not a phish.
 * 4) The data will be printed to the console. 
 *    You can right click the Array and click 'Copy Object' and then paste it into a file.
 */ 

const username = 'tim-etchells';

(async function sendage() {
  const page = await fetch(`https://sendage.com/user/${username}`).then((res) => res.text());
  const doc = new DOMParser().parseFromString(page, 'text/html');
  const sends = JSON.parse(decodeURIComponent(doc.getElementById('sendlist').getAttribute('climbs')));
  return sends;
})()
.then(console.log)
.catch(console.error);