This page shows where a file is used on other wikis. You can also find that information at the bottom of the file description page. 
This special page doesn't include usage through the ProofreadPage extension at Wikisource.
Usage at Wiktionary may be incomplete, as Wiktionary has case-sensitive first characters and lowercase uses are not listed. 
logs  | GlobalUsageCount  
File:Heroin asian.jpg Usage on arz.wikipedia.org 
Usage on ast.wikipedia.org 
Usage on azb.wikipedia.org 
Usage on az.wikipedia.org 
Usage on be-tarask.wikipedia.org 
Usage on bg.wikipedia.org 
Usage on ca.wikipedia.org 
Usage on cs.wikipedia.org 
Usage on cs.wikinews.org 
Usage on da.wikipedia.org 
Usage on de.wikipedia.org 
Usage on de.wikibooks.org 
Usage on diq.wikipedia.org 
Usage on en.wikipedia.org 
Usage on en.wikinews.org 
Usage on es.wikipedia.org 
Usage on eu.wikipedia.org 
Usage on fa.wikipedia.org 
Usage on fi.wikipedia.org 
Usage on fr.wikinews.org 
Usage on ga.wikipedia.org 
Usage on gl.wikipedia.org 
Usage on he.wikipedia.org 
Usage on hr.wikipedia.org 
Usage on hy.wikipedia.org 
Usage on it.wikipedia.org 
Usage on it.wikinews.org 
Usage on kn.wikipedia.org 
Usage on lez.wikipedia.org 
Usage on li.wiktionary.org 
Usage on lt.wikipedia.org 
Usage on lv.wikipedia.org 
Usage on no.wikipedia.org 
Usage on ps.wikipedia.org 
Usage on ro.wikinews.org 
Usage on ru.wikipedia.org 
Usage on ru.wikinews.org 
Usage on ru.wiktionary.org