ConvertTo-Jpeg
A PowerShell script that converts RAW (and other) image files to the widely-supported JPEG format
Overview
Many cameras - and many phones - save photos in a custom file format. Known as RAW images, these files contain richer information than the widely-supported JPEG format allows, but they are not as widely supported by tools. To easily view, edit, or share pictures, it can be handy to convert RAW images to the JPEG format.
ConvertTo-Jpeg.ps1 is a PowerShell script that uses the Windows.Graphics.Imaging API to create a JPEG-encoded copy of each image that is passed to it.
(The original file is not modified.)
Related
- ConvertTo-Heic.ps1: A PowerShell script that converts image files to the efficient HEIC format
Examples
Converting Files
Passing parameters:
PS C:\T> .\ConvertTo-Jpeg.ps1 C:\T\Pictures\IMG_1234.HEIC C:\T\Pictures\IMG_5678.HEIC
C:\T\Pictures\IMG_1234.HEIC -> IMG_1234.HEIC.jpg
C:\T\Pictures\IMG_5678.HEIC -> IMG_5678.HEIC.jpgPipeline via dir:
PS C:\T> dir C:\T\Pictures | .\ConvertTo-Jpeg.ps1
C:\T\Pictures\IMG_1234.HEIC -> IMG_1234.HEIC.jpg
C:\T\Pictures\IMG_5678.HEIC -> IMG_5678.HEIC.jpg
C:\T\Pictures\Kitten.jpg [Already JPEG]
C:\T\Pictures\Notes.txt [Unsupported]Pipeline via Get-ChildItem:
PS C:\T> Get-ChildItem C:\T\Pictures -Filter *.HEIC | .\ConvertTo-Jpeg.ps1
C:\T\Pictures\IMG_1234.HEIC -> IMG_1234.HEIC.jpg
C:\T\Pictures\IMG_5678.HEIC -> IMG_5678.HEIC.jpgRenaming Files
Sometimes files have the wrong extension.
To rename JPEG-encoded files that don't have the standard .jpg extension, use the -FixExtensionIfJpeg switch.
(The => in the output indicates that the file was renamed vs. converted.)
PS C:\T> dir C:\T\Pictures\*.HEIC | .\ConvertTo-Jpeg.ps1 -FixExtensionIfJpeg
C:\T\Pictures\IMG_1234 (Edited).HEIC => IMG_1234 (Edited).jpg
C:\T\Pictures\IMG_1234.HEIC -> IMG_1234.HEIC.jpgFormats
| Decoder | Extensions |
|---|---|
| BMP Decoder | .BMP .DIB .RLE |
| CUR Decoder | .CUR |
| DDS Decoder | .DDS |
| DNG Decoder | .DNG |
| GIF Decoder | .GIF |
| ICO Decoder | .ICO .ICON |
| JPEG Decoder | .EXIF .JFIF .JPE .JPEG .JPG |
| Microsoft Camera Raw Decoder | .ARW .CR2 .CRW .DNG .ERF .KDC .MRW .NEF .NRW .ORF .PEF .RAF .RAW .RW2 .RWL .SR2 .SRW |
| Microsoft HEIF Decoder | .AVCI .AVCS .HEIC .HEICS .HEIF .HEIFS |
| Microsoft Webp Decoder | .WEBP |
| PNG Decoder | .PNG |
| TIFF Decoder | .TIF .TIFF |
| WMPhoto Decoder | .JXR .WDP |
HEIC/HEIF
Windows 10's April 2018 Update (version 1803) added support for HEIC/HEIF images to the Windows.Graphics.Imaging API.
ConvertTo-Jpeg.ps1 uses the new decoder automatically if it's available.
To enable the decoder, install the Microsoft HEIF and HEVC Media Extensions bundle (or else both of HEVC Video Extensions and HEIF Image Extensions).
Once done, the built-in Photos app (and other programs that use the Windows.Graphics.Imaging API) will be able to open HEIC/HEIF images.
WEBP
If the default support for WebP images is missing or incomplete, consider installing the Microsoft Webp Image Extensions. As above, the built-in Photos app is a great way to verify support for WEBP images.