Nomedia file

File Format
Name	Nomedia file
Ontology	Electronic File Formats Miscellaneous File Formats Nomedia file
Extension(s)	.nomedia

Nomedia files (.nomedia) are 0-byte files in Android that tell apps not to index this folder. Without these 0-byters, random app cache like from Wish or even thumbnail cache would appear in your photos app, cluttering up your photo album, and getting backed up, wasting storage.