improve-imgur.user.js

// ==UserScript==
// @name         Improve Imgur
// @version      0.2
// @author       crashmax
// @match        https://imgur.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=imgur.com
// @grant        GM_addStyle
// ==/UserScript==

GM_addStyle(`
  .Footer-wrapper {
    display: none;
  }
`)

window.addEventListener('keydown', (event) => {
  if (event.altKey) {
    event.preventDefault()
    const image = getImage()
    if (!image) return
    location.href = image.src
  }
})

const observer = new MutationObserver((mutation) => {
  const button = getButton()
  if (!button) return
  button.click()
})

observer.observe(document.body, {
  childList: true,
  subtree: true
})

function getButton() {
  return document.querySelector('.Wall-choices > .btn-wall--yes')
}

function getImage() {
  return document.querySelector('.imageContainer > img')
}