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CUR at a glance
CUR
These formats reflect how desktop operating systems built their own graphics-resource conventions for cursors, icons, and device-independent drawing.
ICB at a glance
ICB
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | CUR | ICB |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1990 | 1991 |
| Inventor | Microsoft / Windows ecosystem | Truevision |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use CUR
- Your source file is already in CUR.
- Preserve source expectations before exporting to ICB.
- CUR is commonly used in image workflows.
When to use ICB
- Your target workflow expects ICB.
- Improve delivery compatibility with ICB.
- ICB is commonly used in image workflows.
FAQs
Why convert CUR to ICB?
Convert to ICB when recovering historical raster assets from Truevision-era systems or normalizing old image archives before moving them into PNG, TIFF, or another contemporary format.
It is mainly a compatibility target for legacy graphics collections.
What changes when converting CUR to ICB?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting CUR to ICB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.