Image Resizer utility

Image Resizer is a Windows shell extension for bulk image-resizing. After installing PowerToys, right-click on one or more selected image files in File Explorer, and select Resize with ImageResizer from the menu.

Image Resizer allows you to resize images by dragging and dropping your selected files with the right mouse button. This way, resized pictures can quickly be saved in a folder.

Note

If Ignore the orientation of pictures is selected, the width and height of the specified size may be swapped to match the orientation (portrait/landscape) of the current image. In other words: If selected, the smallest number (in width/height) in the settings will be applied to the smallest dimension of the picture. Regardless if this is declared as width or height. The idea is that different photos with different orientations will still be the same size.

Settings

On the Image Resizer page, configure the following settings.

Sizes

Add new preset sizes. Each size can be configured as Fill, Fit or Stretch. The dimension to be used for resizing can be centimeters, inches, percent and pixels.

Fill versus Fit versus Stretch

• Fill: Fills the entire specified size with the image. Scales the image proportionally. Crops the image as needed.
• Fit: Fits the entire image into the specified size. Scales the image proportionally. Does not crop the image.
• Stretch: Fills the entire specified size with the image. Stretches the image disproportionally as needed. Does not crop the image.

Tip

You can leave the width or height empty. The dimension will be calculated to a value proportional to the original image aspect ratio.

Fallback encoding

The fallback encoder is used when the file cannot be saved in its original format. For example, the Windows Meta File (.wmf) image format has a decoder to read the image, but no encoder to write a new image. In this case, the image cannot be saved in its original format. Specify the format the fallback encoder will use: PNG, JPEG, TIFF, BMP, GIF, or WMPhoto settings. This is not a file type conversion tool, but only works as a fallback for unsupported file formats.

File

The file name of the resized image can use the following parameters:

Parameter	Result
%1	Original filename
%2	Size name (as configured in the PowerToys Image Resizer settings)
%3	Selected width
%4	Selected height
%5	Actual height
%6	Actual width

Example: setting the filename format to %1 (%2) on the file example.png and selecting the Small file size setting, would result in the file name example (Small).png. Setting the format to %1_%4 on the file example.jpg and selecting the size setting Medium 1366 × 768px would result in the file name example_768.jpg.

You can specify a directory in the filename format to group resized images into sub-directories. Example: a value of %2\%1 would save the resized image(s) to Small\example.jpg

Characters that are illegal in file names will be replaced by an underscore _.

You can choose to retain the original last modified date on the resized image or reset it at time of the resizing action.

Install PowerToys

This utility is part of the Microsoft PowerToys utilities for power users. It provides a set of useful utilities to tune and streamline your Windows experience for greater productivity. To install PowerToys, see Installing PowerToys.