webp format how to convert multiple images in subfolders

How to Batch Convert to WebP Image Format?

In this section, you will find a practical way to batch convert images to the WebP format, which was developed by Google and is widely used on modern websites. You can convert your classic JPEG, PNG, BMP, or GIF files to WebP without quality loss—helping to boost both your website speed and SEO performance.

Tip

The WebP format provides much smaller file sizes compared to traditional images, significantly reducing page load times.

Required Software and Files

To batch convert to WebP, you first need to download Google’s official tools. Download the necessary files for Windows from the Google WebP Tools page.

Google WebP tools download page

We download the WebP tools from Google.

Folder and File Preparation

Extract the downloaded file to your desktop and rename the folder as WebConverter. All operations will be managed inside this folder.

Renaming the folder to WebConverter

Rename the folder to WebConverter.

Folder contents

Enter the contents of the folder.

Then create a new Text Document inside the folder and rename it as webp-convert.bat.

Creating the webp-convert.bat file

Rename the text file to webp-convert.bat.

Creating the Batch Conversion Script

Right-click the webp-convert.bat file, select "Edit," and paste the code below. Then save and close the file.

Script Content

@echo off
setlocal EnableDelayedExpansion
pushd %1
for /f "delims=" %%n in ('dir /b /s /a-d-h-s') do IF NOT ".webp" == "%%~xn" (
  set url=%%n
  set urlkirp=!url:~0,-4!
  set yeniurl=!urlkirp!.webp
  echo !yeniurl!
"%~dp0cwebp.exe" -q 80 "%%n" -o "!yeniurl!"
)
pause

Editing the webp-convert.bat file

Paste the code into webp-convert.bat and save it.

Create Shortcut and Add to Send To Menu

To simplify the conversion, create a shortcut for webp-convert.bat and add it to Windows' Send To menu. Open any folder, type shell:sendto in the address bar, and press Enter.

Accessing the Send To menu

Type shell:sendto to open the Send To menu.

Drag the shortcut of webp-convert.bat into the opened window.

Adding shortcut to Send To menu

Drop the shortcut into the Send To menu.

How to Batch Convert?

Now, to batch convert JPG, PNG, BMP, or GIF files in any folder to WebP, simply right-click the folder, choose Send To → webp-convert. The script will automatically convert all images—including those in subfolders—to WebP format.

Right click Send To menu and batch conversion

Right-click the folder and select Send To → webp-convert.

Batch conversion process successful

After the process starts, all images are recreated in .webp format.

Important Note

All images in subfolders will also be converted automatically. You will benefit from a major file size reduction and performance improvement.

   

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