300 DPI Image Enhancement for KDP

I need over 10 JPG images converted to 300 DPI for KDP. Requirements: - Increase DPI to 300 - Brightness/contrast adjustments as needed Ideal Skills: - Proficiency in image editing software (Photoshop,... (Budget: $30 - $250 USD, Jobs: Adobe Photoshop, Digital Art, GIMP, Graphic Design, Image Processing, Photo Editing, Photoshop, Photoshop Design)