How to resize multiple photos at once in Windows 10 and 11

Windows has no built-in bulk resize tool, but you can resize multiple photos at once using the Send to Mail trick or Microsoft PowerToys. Both methods preserve aspect ratio.

Both methods shrink the photos and reduce their file size. The first uses only built-in Windows features; the second needs a free Microsoft tool.

Resize multiple photos without extra software

Right-click on your desktop.
Go to New.
Click Folder.
Name the folder anything (e.g., Resized photos). The name doesn't matter.
Open File Explorer.
Go to the photos you want to resize.
Select the photos.
Right-click the selected photos.
Go to Send to. On Windows 11, you first need to click Show more options.
Click Mail recipient.
In the window that opens, select a size from the dropdown (e.g., 640 x 480, 800 x 600, 1024 x 768, or 1280 x 1024).

Note: The aspect ratio (width-to-height ratio) stays correct regardless of the size you pick. A 1280 x 720 photo resized to 800 x 600 becomes 800 x 450.

Click Attach.
Windows will try to open an email program. If you don't have one, you'll see: "There is no email program associated to perform the requested action." Leave that window open and don't click OK.
Click the Start button (Windows logo) on the taskbar or press the Windows key on your keyboard.
Type %temp%.
Click %temp% when it appears in the search results.
The Temp folder opens. Click Type in the column headers to sort by file type.

Alternatively, type a file type (e.g., .jpg, .png, .gif) in the search bar to filter the list.

Search for file extension in File Explorer in Windows 11

In the left sidebar, click the arrow next to Desktop to show the folder you created in step 4.
Drag or copy and paste the photos from the 'Temp' folder to the new folder.