It can also crop, scale and rotate images by 90° or custom angles, and it features a red-eye effect removal function.

Manipulated images can be saved in the formats JPEG, PNG, TIFF, .tga, avif, heif and WebP.

These albums can be uploaded to a website, providing a very simple mechanism for publishing collections of photos on the web.

gThumb also includes many basic features such as copying, moving, deleting or duplicating images, printing, zooming, format transcoding, and batch renaming.

Libraries that are not mandatory but possible include exiv2, libjpeg, LibTIFF, LibRaw, and JPEG XL's libjxl.