免費線上 PWP 轉 G4 轉換器

A color bitmap image format produced by the PhotoWorks software, which is intended to be used for the distribution of graphic information. It is used for displaying information on the Internet. It is similar in structure to a JPEG file and can be converted without loss of quality. It is also used to store multiple SFW images.

G4 is a method to compress black and white images without losing quality. It is used for fax machines and as a one of the compression types for the TIFF format. G4 treats a picture as black dots and lines on a white page (less file size will be achieved if there are less black dots and lines).