Abstract: A method is provided that includes receiving, from a first application, a first image file and a first set of metadata associated with the first image file, and updating an on-device index based on the first image file and the first set of metadata. The method may further include processing the first image file and the first set of metadata to generate a second set of metadata and updating the on-device index based on the second set of metadata. Upon receiving an image search query the process may identify a plurality of candidate image files from the on-device index based on the image search query, and providing the plurality of candidate image files for display in response to the image search query.