Download all Tiles from Google Maps Mars

mars.js

function getMapUrl(tile, zoom) {
    var bound = Math.pow(2, zoom);
    var x = tile.x;
    var y = tile.y;

    // Don't repeat across y-axis (vertically).
    if (y < 0 || y >= bound) {
      return null;
    }

    // Repeat across x-axis.
    if (x < 0 || x >= bound) {
      x = (x % bound + bound) % bound;
    }

    var qstr = 't';
    for (var z = 0; z < zoom; z++) {
      bound = bound / 2;
      if (y < bound) {
        if (x < bound) {
          qstr += 'q';
        } else {
          qstr += 'r';
          x -= bound;
        }
      } else {
        if (x < bound) {
          qstr += 't';
          y -= bound;
        } else {
          qstr += 's';
          x -= bound;
          y -= bound;
        }
      }
    }
    return 'https://mw1.google.com/mw-planetary/mars/visible' + '/' + qstr + '.jpg';
  }

for (let x = 0; x < 256; x++) {
    for (let y = 0; y < 256; y++) {
        console.log(getMapUrl({
            x,
            y
        },8));
        
    }
}