# THUMBSIZE System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) → [T](Help%20System/GSTARCAD/2027/System%20Variables/T/(T).md) ## Function Description: The THUMBSIZE system variable is used to specify the resolution by pixels for all previews of thumbnails. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 3 | | Range | 0,1,2,3,4,5,6,7,8 | ## System Variable Value: **0:** 64 x 64 **1:** 128 x128 **2**: 256 x 256 **3**: 512 x 512 **4**: 1024 x1024 **5**: 1440 x1440 **6**: 1600 x1600 **7**: 1920 x1920 **8**: 2560 x 2560 --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables_Tgsv/THUMBSIZE.html) · © Gstarsoft Co., Ltd.