Click the at the top and select "Resize image" .
To batch resize, select multiple images in Finder first, then open them all in Preview at once.
You can resize images instantly using the software already installed on your computer. Open your image in the Photos app .
Enter your desired width and height; check "Scale proportionally" to avoid distortion.
If you are looking for a "Resizer" tool for Windows or Mac, you don't necessarily need to download obscure .rar files from unofficial sources, which can often contain malware. Both operating systems have powerful , and there are several highly-rated, free official applications available for more advanced needs. 🛠️ Built-in Methods (No Download Required)