Hello @kartik,
<script type="application/javascript">
function resizeIFrameToFitContent( iFrame ) {
    iFrame.width  = iFrame.contentWindow.document.body.scrollWidth;
    iFrame.height = iFrame.contentWindow.document.body.scrollHeight;
}
window.addEventListener('DOMContentLoaded', function(e) {
    var iFrame = document.getElementById( 'iFrame1' );
    resizeIFrameToFitContent( iFrame );
    // or, to resize all iframes:
    var iframes = document.querySelectorAll("iframe");
    for( var i = 0; i < iframes.length; i++) {
        resizeIFrameToFitContent( iframes[i] );
    }
} );
</script>
<iframe src="usagelogs/default.aspx" id="iFrame1"></iframe>
Hope it helps!!
Thank you!!