This app is a simple and effective tool for resize photo to what you want . You can resize some pictures to 1440 x 900 and others to 1920 x 1080 at one time. or change by percent (50%, 70%).
How to use:
1.Select the scheme you want to execute from the left( Such as 1920×1080)
2.Drag & Drop Folder (Photos) to the main view
3.If you want resize other photos to other scheme, just repeat 1.2 step
4.Click “gear” button to set each scheme output file format
5.Click ‘Convert’ , and wait for finish