Image Tuner is a lightweight freeware which works on images or series of images and applies a set of basic but simple and useful tasks to them. Pictures or a folder of pictures are added by dragging them into the program window or by using the Add Folder or Add Images buttons. The images will then be listed and previews of them can be seen on the top right. On the lower left a destination folder is chosen and any of the available options checked.
Pictures can be resized to one of many preset sizes in the available drop down or to a custom size by clicking the icon immediately to the right of the drop down list.
Images can also be converted to and from *.jpg, *.png, *.gif, *.bmp and *.tiff. The icon to the right opens up the program settings relevant to each format.
Images can also be renamed. In the text area one can for example type “picture_” (without the quotes). This will produce output images named picture_1, picture_2 and so on.
The Add Watermark option allows the user to browse to another image which will be overlayed or watermarked on top of the ones in the image list.
The program settings include options for each image format such as out put quality and others, as mentioned earlier, relevant to the image format. The settings also include positioning and transparency settings for the watermark option and also the option to maintain the proportions of the original images when resizing. Additionally the choice of filters and interpolations used to generate out put images are listed and can be chosen, these include the default and common Lanczos3 and others.
Image Tuner runs on Windows 98, ME, NT, 2000, XP, Vista and 7 including 32 and 64 bit versions.