# RASTERPREVIEW System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) → [R](Help%20System/GSTARCAD/2026/System%20Variables/R/(R).md) ## Function Description: The RASTERPREVIEW system variable is used to control whether to create and save thumbnail preview images with drawings together. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | ## System Variable Value: **0:** do not create thumbnail preview images in drawings **1:** create thumbnail preview images in drawings --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables/RASTERPREVIEW.html) · © Gstarsoft Co., Ltd.