Image
What is a .ras file?
A .ras file is a Sun Raster Image. This is an image format — a picture, drawing or graphic.
How to open a .ras file
- GIMP (free) and IrfanView open a very wide range of image formats, including obsolete ones.
- XnView MP is the best bet for unusual or legacy image types.
- Your operating system's built-in viewer may work for mainstream formats.
The registry records this extension against Sun Raster Image, so software from that family is the most likely match.
How to convert a .ras file
- Open it in GIMP or XnView and export as .png (lossless) or .jpg (smaller).
MIME type
When a .ras file travels over the web, servers label it with this MIME type:
image/x-sun-rasterThe technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .ras.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Sun Raster Image | — | image/x-sun-raster | x-fmt/184 |