Download all imported PGNs from lichess

downloadPGN.js

var downloadTime = 3 * 1000

function getIds() {
  var ids = []

  jQuery('.game-row__overlay').each(
    function () {
        var h = jQuery(this).attr('href')
        var id = h.match(/[a-z0-9]+/i)[0]
        ids.push(id)
  })

  return ids
}

var ids = getIds()
var count = 1;
jQuery.each(ids, function(i, id) {
  setTimeout(function() {
    var url = `https://lichess.org/game/export/${id}?imported=1`
    console.log(`Downloading URL ${count++} of ${ids.length} ${url} …`)
    window.location.href=url
  }, i * downloadTime)
})