Image Viewer Ultimate

Not only a simple image converter but an all-in-one photography program that supports resizing images, photo cropping, rotating, and more in batches. Convert hundreds of images at a time with just a few mouse clicks. Convert images with super high speed, and support for multi-core processing. Both amateur and professional photographers can deal with digital photos easily. Supports the most popular image formats: BMP, JPEG, TIFF, PNG, GIF, TGA, and PSD, and almost all image formats. This batch image converter can convert thousands of files at once in batch mode. Convert multiple image files from different formats to the desired format at one time with a few mouse clicks. Add and customize watermarks to images. Batch rename your images at will. Adjust image brightness, contrast, and saturation in batch to make your images more special. Preview the new image as the setting is adjusted. Provides some parameter adjustments for each format. Free to rotate images.

FastStone Photo Resizer is an image converter and renaming tool that intends to enable users to convert, rename, resize, crop, rotate, change color depth, and add text and watermarks to images in a quick and easy batch mode. Drag and Drop mouse operation is well supported. Convert and Rename images in batch mode. Support common image formats including loading of JPEG, JPEG2000, PNG, GIF, BMP, TIFF, PCX, TGA, WMF, EMF, ICO, CUR, PPM, HEIC, WEBP, and saving to JPEG, JPEG2000, PNG, GIF, BMP, TIFF. Resize, crop, change color depth, apply color effects, and add text, watermark, and border effects. Rename images with sequential numbers. Search and replace texts in the file names. Preview conversion and renaming. Support folder/non-folder structure. Load and save options. Support multithreading. i.e. process multiple images simultaneously for better performance. Improved color accuracy when loading CMYK jpeg images.