How do you convert Webp to JPG on mac or Windows 11?

I have encountered this situation before. I want to convert webp to jpg but don't want to install third-party tools. In fact, it can be done with the built-in tools on Mac and Windows 11. I will share two methods with you:

Method 1: Batch conversion with Automator on Mac
The built-in Automator on Mac is very easy to use and does not require any software to be installed. Open Automator, create a new "Application", and then add two actions, "Get Specified Finder Items" and "Change Image Type". Select JPG as the image type. After saving, just drag the webp into it and it will automatically convert to jpg. It's simple and violent.

Method 2: Use PowerShell commands on Windows 11
Although Win11 does not directly support webp to jpg, you can use the built-in Paint component to do some small operations. You can use PowerShell to write a script to automatically open the webp image with Paint and then save it as jpg. I have tried dozens of pictures and there is no problem, but the speed is slow.

The steps of PowerShell script are as follows:
Copy the following code into Notepad and save it as convert-webp.ps1 file (change the file type to "all files"):

powershell

$sourceFolder = "C:\Users\YourName\Pictures\webp" # Change to your webp folder path
$targetFolder = "C:\Users\YourName\Pictures\jpg" # Change to the path where you want to save jpg

# Make sure the target folder exists
if (!(Test-Path -Path $targetFolder)) {
New-Item -ItemType Directory -Path $targetFolder
}

# Get all webp files
Get-ChildItem -Path $sourceFolder -Filter *.webp | ForEach-Object {
$webpFile = $_.FullName
$jpgFile = Join-Path $targetFolder ($_.BaseName + ".jpg")

# Open with Paint and save as jpg
Start-Process -FilePath "mspaint.exe" -ArgumentList "`"$webpFile`""
Start-Sleep -Seconds 2 # Wait for Paint to open

# Simulate Ctrl+S Save As action (you can use AutoHotkey to automate this part)
Write-Host "Manually click "File" -> "Save As" -> Select JPG, then save as: $jpgFile"
}

🔁 Note:
This method is not fully automated, it just batch opens each WebP file, you need to manually click "Save As" to save as JPG. But for a small number of files and temporary conversion, it is still very practical.

If you know how to click AutoHotkey, you can use it together to achieve truly fully automatic batch webp to jpg.

Both of these methods do not rely on third-party tools, and the system can handle webp to jpg on mac. It is suitable for temporary processing of a batch of pictures, and can handle a large number of pictures or a small number of pictures.