= Segments Info
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The Segments Info screen lets you see a visualization of the various segments in the underlying Lucene index for this core, with information about the size of each segment – both bytes and in number of documents – as well as other basic metadata about those segments. Most visible is the the number of deleted documents, but you can hover your mouse over the segments to see additional numeric details.

image::images/segments-info/segments_info.png[image,width=486,height=250]

This information may be useful for people to help make decisions about the optimal <<indexconfig-in-solrconfig.adoc#merging-index-segments,merge settings>> for their data.
