Convert all images to jpg

Question

I need to convert all images in folder and subfolders to jpg. I need to batch this process with command file. GUI tools needles for me I need the script.

I tried to

Answer 1

I've done something similar with converting a bitmap files to icon files here:

http://sev17.com/2011/07/creating-icons-files/

I adapted it to your requirements and test a function for converting image files to jpg:

function ConvertTo-Jpg
{
    [cmdletbinding()]
    param([Parameter(Mandatory=$true, ValueFromPipeline = $true)] $Path)

    process{
        if ($Path -is [string])
        { $Path = get-childitem $Path }

        $Path | foreach {
            $image = [System.Drawing.Image]::FromFile($($_.FullName));
            $FilePath = [IO.Path]::ChangeExtension($_.FullName, '.jpg');
            $image.Save($FilePath, [System.Drawing.Imaging.ImageFormat]::Jpeg);
            $image.Dispose();
        }
    }

 }

 #Use function:
 #Cd to directory w/ png files
 cd .\bin\pngTest

 #Run ConvertTo-Jpg function
 Get-ChildItem *.png | ConvertTo-Jpg