Currently, ArcGIS provides support for 32-bit TIFFs, but the ability to include an alpha channel is only available when exporting maps. It would be extremely useful if all raster processing tools that generate a new raster (e.g., Copy Raster, Export Raster, etc.) could support writing 32-bit TIFFs with an alpha channel.
Why is this important?
- Many workflows require transparent backgrounds in raster outputs, especially for visualization, overlays, and seamless integration with other software.
- Currently, users must rely on workarounds, such as manually adding transparency in external software.
- Having this feature directly in ArcGIS would improve efficiency and ensure consistency in raster exports.
Suggested Implementation
- Add an option in relevant raster tools to enable an alpha channel when exporting a 32-bit TIFF.
- Ensure that transparency is preserved when writing the raster file.
This enhancement would greatly benefit users who work with transparent raster datasets and streamline workflows across different applications.
