The widespread use of high-throughput sequencing technology has challenged the capabilities of genomic data visualization tools as the volume and size of genome-wide datasets outpace the capacity of existing browsing technology. In response, the University of California Santa Cruz (UCSC) has repeatedly extended its popular genome-browsing tool, the UCSC Genome Browser (Kent et al., 2002; Meyer et al., 2013), to offer increased visualization of remotely hosted large datasets.