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Drop one NEF or two hundred. Batch conversion is not a paid feature here.
A Nikon shoot has to be delivered or uploaded and the client cannot open NEF files.
The NEF's sensor mosaic is demosaiced, white balanced and tone mapped, then written as an 8-bit JPEG. All the editing latitude of the raw file is spent at that moment, in exchange for a file anything can open.
Nikon's Active D-Lighting and Picture Control settings are stored as instructions in the file, not applied to the sensor data. A third-party conversion ignores them, so the JPEG can look flatter and darker in the shadows than the camera preview did.
No. The JPEG is a one-way rendering. Any future re-edit, especially of white balance or highlights, needs the raw file.
No. Those live in a catalogue or an XMP sidecar. A direct file conversion reads the raw data only.
Drop one NEF or two hundred. Batch conversion is not a paid feature here.
JPEG Image is lossy, so the quality control decides the trade between size and fidelity.
Converted and deleted the moment it finishes. Never written to permanent storage.