ตัวแปลงไฟล์ออนไลน์ฟรี SFW เป็น PNM

Format for bitmap images that were created in the Seattle FilmWorks video editor, which is no longer being actively developed. It was also used to create slideshows. The format has a MGI PhotoSuite file structure that supports bitmap images. SFW files can be converted into JPG images.

A bitmap image in the Portable Any Map format that was originally developed for processing and storing several types of monochrome and color images without compression as well as grayscale images. Bitmap graphics data in a PNM file are stored using ASCII or binary structure.