Compress is a very basic tool for compressing the file size of photos. The software provides two ways to do so depending on the amount of pictures to be processed. To compress single image just select the image file i.e. a jpg or png or bmp (format supported by the software) file by clicking the select file button and then select the image quality you want to convert the image to from the provided dropdown next to the select file button the output image is stored at the same location as the source file with the name including the image quality at the start of the name.
To compress multiple images just select the folder containing the images you want to compress then select the quality from the dropdown next to it then select the destination folder where you want to save the converted images by clicking on the select folder button in the line of destination folder tag after that click compress button it will start compressing the images and will display the completed process in the processbar at bottom as soon as it completes the compressing it will give you a popup message regarding how many images compressed successfully.