Lossless·Toolkit

GIMP

The GNU Image Manipulation Program: The Free and Open Source Image

GIMP — site preview

https://youtu.be/KWLwgLYvaqE?si=VgLLzVDh2n92xHSL

https://www.gimp.org/tutorials/Basic_Batch/

https://youtu.be/Q7t_4t8U7KU?si=OYmyCMt47CXahzsp

https://youtu.be/ZGuqKbpWQy8?si=l3mYKC5a1QREN6US