Reduce a PDF’s File Size Using Preview Open Finder and find the PDF you want to resize. Double-click the file, and it should open in Preview.

Learn how to change file size in Paint and Paint 3D on Windows 11/10. You can also change the file resolution in Paint app and Paind 3D.

After installing the app, select the photo you want to resize, then choose a percentage, resolution, or specific file size. Once you've resized the image, simply save the new version.

if you find the VLC player window size keeps changing everytime you open the app, follow these steps to resize VLC player window permanently.