how to change pixel size of a photo on mac

Also, many content management systems (CMS) have a size limit they will allow you to upload often the limit is 10 MBs. Why is this important? If you upload a huge file it will take a long time to upload and will take a lot of space up unnecessarily on the server. Nearly all of the time, you need to take the time to resize the photo a little before uploading it to your website. Most cameras these days, by default, take HUGE photos: thousands of pixels wide at at resolutions that are much more than what a webpage needs. How To Resize a Photo using Apple Mac’s Preview You will then have a picture that looks like this…no photobomber in the background: Once you have the cropping rectangle adjusted to how you want it, select “Crop” from the “Tools” dropdown menu or press Command+k.You can see in the image below I’ve drawn a rectangle around “mom.” You can also see the little white drag buttons in the corners and on the side. Once you draw the rectangle you can adjust it using the white drag buttons in the corners and the sides. With the cropping tool selected, draw a rectangle around the area of the photo you want to keep.For this example, we’re just going to look at the most commonly used: the rectangle. You have several cropping shape options: rectangle, elliptical, lasso (free hand), smart lasso (Preview tries to grab what it thinks you want), and Instant Alpha (where it removes the background). Make sure the crop icon is clicked and looks like in the photo below.Open the file in Preview you have several options: double click on the photo launch Preview and then using “File > Open” dialog box or drag the photo onto the Preview icon.Using Preview it’s easy to get rid of him. You just want the picture of your mom without the photobomb in the background. Suppose you were out to lunch with your mom and took this lovely photo of her: Who is that guy in the background? Let’s take a look at an example of how to crop.

How To Crop a Photo Using PreviewĬropping means removing part of the photo-literally cutting out a part of the photo you don’t want in the picture. Preview does all kinds of wonderful stuff: it is the default PDF viewer on Mac, it allows you to sign PDFs, annotate them, open nearly any photo type, and most importantly for this post, it allows you to edit photos. All Macs have a built in application called Preview.

How to change pixel size of a photo on mac