XnConvert

XnConvert is a fast, powerful and free cross-platform batch image converter, It allow to automate editing for your massive photo collections, you can convert your different images, photos and pictures easily, and apply over 80 actions (like resize, crop, color adjustements, filter, ...). All common picture and graphics formats are supported (JPEG, TIFF, PNG, GIF, WEBP, PSD, JPEG2000, OpenEXR, camera RAW). You can save and re-use your presets for another batch image convert

Combine and choose between more than 80 different operations including:

• Metadata Editing.
• Transforms: Rotate, Crop, Resize, ...
• Adjustments: Brightness, Contrast, Saturation, ...
• Filters: Blur, Emboss, Sharpen, ...
• Effects: Masking, Watermark, Vignetting, ...
• Watch folders for new or updated images and automatically apply a custom set of edits.