Photoshop’s Smart Sharpen filter offers lots of features for advanced sharpening…

1 THE SMART SHARPEN COMMAND

Begin by resizing your image for your chosen output, like a specific print size or a resolution for onscreen viewing. To quickly do this, grab the Crop Tool, choose ‘Width, Height and Resolution’ in the options then input your print size, set to 300 pixels per inch. Next go to Filter > Sharpen for Smart Sharpen.