What is the difference between .pt3 and .g3?
- Extension
 - .pt3
 - .g3
 
- Format
 - Binary
 - Binary
 
- Category
 - Font
 - Fax
 
- Developer
 - Adobe Systems
 - CCITT
 
- Description
 - PostScript Type 3 consists of glyphs defined using the full PostScript language, rather than just a subset. Because of this, a Type 3 font can do some things that Type 1 fonts cannot do, such as specify shading, color, and fill patterns.
 - Fax image created in the CCITT Group 3 compressed format, which is used for digital transmission of fax data and supports 1 bit per pixel; can be viewed by programs such as GIMP and IrfanView.
 
- MIME Type
 - application/postscript
 - image/g3fax
 
- Sample
 - sample.g3
 
- Wikipedia
 - .g3 on Wikipedia