視窗右鍵 → 設定/管理 → 編緝使用者設定：
最強圖片預覽工具JPEGView 關閉自動全屏模式
搜尋ShowFullScreen 並設定為false：
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; - WINDOW BEHAVIOR OPTIONS
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; Start in full screen or windowed mode
; 'true' or 'false' to always start in full screen, respectively windowed mode
; 'auto' to choose best mode depending on image size of first image - windowed when it is small, full screen when it is large
ShowFullScreen=false