Public/System/ConvertTo-Image.ps1
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function ConvertTo-Image { [CmdletBinding()] [CmdLetTag()] param ( [parameter(Mandatory,ValueFromPipeline)] [string]$Text, [parameter(Mandatory)] [string]$OutputFile, [int]$Density=1200, [int]$Quality=100, [int]$MaximumSizeBytes ) begin { $PSCmdlet|Write-PSCmdLetBegin Install-Chocolatey if (!(Get-ChocoPackage imagemagick.app)){ choco install imagemagick.app } $ImageMagick=Get-ChildItem ([System.Environment]::GetFolderPath([System.Environment+SpecialFolder]::ProgramFiles)) "ImageMagick*"|ForEach-Object{ Get-ChildItem $_.FullName magick.exe }|Select-Object -First 1 if (!(Get-ChocoPackage Ghostscript)){ choco install Ghostscript } npm install -g pretty-markdown-pdf|Out-Null } process { $baseName=[guid]::NewGuid().ToString() Push-Location $env:TEMP $mdFile=".\$baseName.md" Set-Content $mdFile $Text pretty-md-pdf -i $mdFile do { & $ImageMagick -density $Density -quality $Quality "$baseName.pdf" .\$baseName.jpg & $ImageMagick .\$baseName.jpg -flatten -fuzz 1% -trim +repage $OutputFile $Density=0.9*$Density $Quality=0.9*$Quality } until (!$MaximumSizeBytes -or (([System.IO.File]::ReadAllBytes($OutputFile)).Length -lt $MaximumSizeBytes)) Pop-Location } end { } } |