Supported Input Formats
The following formats are supported for displaying images, importing images, exporting and saving images, and capturing screen images.
| Format | Ext | Commonly used for | Bits per Pixel | Compression |
|---|---|---|---|---|
| CALS (Type I) | .cal | Military/SGML conformance | 1 | CCITT Group 4 |
| PNG | .png | Portable Network Graphics files – Used for Web art, GIF replacement | Various | Many |
| Img (X Window) | .p | X-Windows palette format | 8 | None |
| Img (24 Bit) | .a | X-Windows RGB format | 24 | None |
| Ingr. (Intergraph) CIT | .cit | Engineering drawings — highly compressed format used for large drawings | 1 | CCITT-G4 |
| Ingr. (Intergraph) COT | .cot | Monochrome or continuous tone (grayscale) images; color trained | 8 | None |
| Ingr. (Intergraph) RGB | .rgb | Full-color images | 24 | Variable |
| Ingr. (Intergraph) RLE | .rle | Old standard for engineering drawings. Uses one-dimensional run-length compression. Prefer .cit over .rle for binary images. | 1 | Run-length |
| JPEG (JFIF) | .jpg | Joint Photographic Experts Group — used for grayscale or color photographs. Very high compression rates, but lossy compression. Requires careful use. | 8 or 24 | JPEG |
| PCX | .pcx | Popular PC format supporting binary, mapped and true color. Developed by ZSoft for PC Paintbrush. | 1, 8, or 24 | Run-length |
| Sun Raster | .rs | Sun-compatible format | 8 | Run-length |
| Targa | .tga | Popular PC format supporting binary, mapped, pseudo or true color. TGA and TARGA are trademarks of Truevision, Inc. | 8, 16, 24, or 32 | Uncompressed and run-length |
| TIFF | .tif | Tag Image File Format. Popular for desktop publishing. Often used as a wrapper for other formats such as CCITT-Group 4 Fax. | Any | Various |
| GEOTIFF | .tif | TIFF file format- based interchange format for georeferenced raster imagery. | Any | Various |
| Windows BMP | .bmp | Microsoft Windows bitmap | 8 or 24 | None |