I am proud to announce an UDF collection for FreeImage. The Library contains all functions of the 3.15.0.0-release (the documentaition is located here (PDF) ) If you need more informatin about the functions, you have to read the PDF since i did not include comments in the AU3-file. If you want to download it, click here: [uDF] FreeImage library Downloads: And now an example for resizing an image (it saves the resized image in a new file, e.g. image.png will be saved as image_rsz.png)