 &#39;png&#39;, &#39;png32&#39;, &#39;png64&#39;, &#39;png128&#39;, &#39;png256&#39;, &#39;jpg70&#39;, &#39;jpg80&#39;, &#39;jpg90&#39;</td>
</tr>
</tbody>
</table>
<p><em>Example</em>:</p>
<pre><code>// Downsample tiles for faster loading times on slow
// internet connections
var layer = L.mapbox.tileLayer(&#39;mapbox.streets&#39;, {
    format: &#39;jpg70&#39;
});
</code></pre><p><a href="https://www.mapbox.com/mapbox.js/example/tilelayer-setformat/">Live example of .setFormat in use</a></p>
<p><em>Return