gdal2tilesp.py -z 7-17 --processes=31 ./input.tif tile_folder
mb-util --scheme="xyz" tile_folder tiles.mbtiles

<script src="https://cdn.jsdelivr.net/npm/Leaflet.TileLayer.MBTiles@1.0.0/Leaflet.TileLayer.MBTiles.min.js"></script>

var mb = L.tileLayer.mbTiles('https://.../tiles.mbtiles').addTo(map);

mb.on('databaseloaded', function(ev) {
    console.info('MBTiles DB loaded', ev);
});

mb.on('databaseerror', function(ev) {
    console.info('MBTiles DB error', ev);
});