Libjpeg-Turbo is intended for general use for compression and decompression and from the list of users [1] is far more often used for decompression. Your mentio

Libjpeg-Turbo is intended for general use for compression and decompression and from the list of users [1] is far more often used for decompression. Your mentioned projects are only for JPEG (re)compression, which is something else entirely. [1] https://libjpeg-turbo.org/About/Software https://libjpeg-turbo.org/About/Software