@echo off
setlocal
for /f "delims=" %%z in ('dir/b nconvert.exe') do set "nconvert=%%~fz"
::E:\in\inc 
pushd E:\in\inc
::这里是宽度，高度由程序根据比例自动调节
set imageWidth=800
for /f "delims=" %%I in ('dir/b/s/a-d *.jpg') do echo Editing [%%I]&&"%nconvert%" -overwrite -out jpeg -ratio -resize %imageWidth% 0 "%%I">nul 2>nul
echo ==============
echo Done!
echo.
popd
echo 按任意键退出.
pause>nul
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for /f "delims=" %%I in ('dir/b/s/a-d *.jpg') do (
    echo Editing [%%I]
    if %%~zI gtr 1048576 (
        "%nconvert%" -overwrite -out jpeg -ratio -resize 500 0 "%%I">nul 2>nul
    ) else (
        "%nconvert%" -overwrite -out jpeg -ratio -resize 1000 0 "%%I">nul 2>nul
    )
)
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