RW2 is a RAW image format used by such Panasonic cameras as LX5 and LX7. Although, photos stored in the format cannot be printed right away, they are perfect for professional photographers because they are stored without pre-processing, which allows customizing the image settings in a video editor according to your needs. However, not many programs can open RW2 so the best way is to convert it to a more popular image format.

VIPS is a format used by libvips internally for calculation but it can also be used for storing images. It is simple, fast and has no size limit. However, only a few other programs are able to open such files which is why it is better to convert them to a more popular format.