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÷PDFtoJPG [ѡ] < -i PDF ļ> [-o JPGFOLDER]
-i [PDFļ]PDFļ֧ͨ
-o [ļ] : ɵ JPG ͼ
-r [resolution] ɵͼ÷ֱ
-f [һҳ] Ҫתĵһҳ
-t [rotate] ת JPG ͼ1-90,2-180,3-270
-q [] 25-100  JPG 
-w [] ͼ
-h [height] ͼ߶
-l [һҳ] Ҫתһҳ
-a [moveto ļ] ת PDF ĵƶ
-e ɾת PDF ĵ
- 