Easy Photo Studio FREE

Easy Photo Studio Free is a program that you can use for free.
It has the following features:

• Photo Viewer - automatically browse photos on your computer
  
• Batch Conversion - convert photos or images in batch mode, supports many graphic formats and supports formatting and size adjustment options
• Supports 30+ graphic formats including BMP, JPG, PNG, GIF, ICO, TIF, SVG, RAW, DNG, CR2, etc.
  
• Image resizing - supports 5 resampling algorithms
• Edit and effects - support popular image effects including color correction, RGB channels, brightness, contrast, color balance, sketch, freeze, etc.
• Rotation - supports left rotation, right rotation, vertical flip, horizontal flip.