@echo off
setlocal enabledelayedexpansion
for %%i in (*.jpg) do (
    set "dpi="
    call :getDPI "%%i"
    if defined dpi echo,%%i:	!dpi!dpi
    )
del $temp
pause&exit

:getDPI
certutil -encodehex -f %1 $temp >nul
for /f "tokens=2-5,8-12,15-17" %%a in ($temp) do (
    if /i not "%%a%%b%%c%%d"=="ffd8ffe0" (echo,文件编码不符&goto :eof)
    if /i not "%%e%%f%%g%%h%%i"=="4a46494600" (echo,文件编码不符&goto :eof)
    if %%j equ 0 set /a "dpi=96"
    if %%j equ 1 set /a "dpi=0x%%k%%l"
    if %%j equ 2 set /a "dpi=0x%%k%%l*127/50"
    goto :eof
    )
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@set @x=1 //&(if "%~1" neq "" cscript /e:jscript "%~f0" "%~1") &pause&exit/b
wi = WSH.createobject("wia.imagefile"), v = WSH.arguments;
wi.loadfile(v(0)), WSH.echo(wi.horizontalresolution+'/'+wi.verticalresolution), WSH.quit();
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