Readonlyencoderimage_compression's lib_name and lib_version.
ReadonlyfileThe WebP to upload (x-entity-type: image/webp).
ReadonlyheightReadonlypdqThe pdq_hash of update_media_with_pdq_hash_info, "<64 hex digits>:<quality>"; absent for a
carousel photo, which the app does not hash.
Readonlyqualityimage_compression's quality, as a number.
ReadonlysourceThe developer's file as it is, before any orientation: image_compression's original_width /
original_height, configure's source_width / source_height, and provenance_metadata's
file_extension (the source's, not webp).
ReadonlywidthThe encoded picture's size.
The WebP and the facts the upload's requests carry about it.