![]() ![]() So at this point I could just Close and leave Preview and I'm set. If I get information on the file here now it will be much smaller than it was before. It has been saving the changes this whole time as that is how Preview works. Let's zoom in a bit and we can see it is still a pretty decent quality but obviously it is going to be a much smaller file. So now you've got a much smaller image there. So you get the resulting size here and you can click OK. Again, that's probably not what you want to do. It is just going to change the resolution. Then you want to have Resample Image turned On otherwise you can't change the number of pixels. These checkboxes here, this one Scale proportionally maps to this same function. Having 300 pixels per inch or 72 pixels per inch doesn't really matter. Unless you're doing special print work a pixel is a pixel. In general you want to have these locked. Say if I want something to be 800 pixels wide it will automatically do the height to match the width and I can distort the image by changing one dimension but not the other. Now you could change this to pixels and then you could actually see the real pixels here. So if I wanted to say resize everything by 50% I can easily just type 50 there and it is going to resize everything and you'll see the resulting size here and the resulting file size as well. Now, by default it is going to be set to percent. You've got Fit Into and you can select a certain number of pixels. You just need to take the time to learn how this tool works. Now you get this pretty complex little dialogue box here and you could resize using this. So, you can go to Tools and then Adjust Size. Often when an image is too big it's because it is a high resolution image and you may not need a high resolution image in your current situation. The file is already going to be smaller if I Export it. You can always go to the Markup Tools here and then click on the selection tool to make sure that you get the selection rectangle there and then can go ahead and use Crop or just Command K. I'll just crop out some of the edges here. Figure out what part of the image you want. So when you're working with an image you should have a crosshair cursor here and you can just click and drag to where you want and then grab any of the edges or corners. What's happening here is you need to select something first. There is a crop tool but it is usually grayed out. After all if you want to get something to a smaller size the first thing they want to do is crop out unnecessary parts of the image. Now the first thing I may want to do is crop an image. It's going to open it up in Preview by default. ![]() So I'm going to double click on a JPEG image here in the Finder. You don't need a third party app for that. If you need to change an image by Cropping it, Resizing it, and then Exporting it in some different format you can do that all in the Preview Tool that comes with your Mac. Join us and get exclusive content and course discounts. There you can read more about the Patreon Campaign. MacMost is brought to you thanks to a great group of more than 1000 supporters. ![]() Let me show you how to Crop, Resize, and Export an image using Preview. Video Transcript: Hi, this is Gary with. Check out Crop, Resize and Export an Image With Preview at YouTube for closed captioning and more options. ![]()
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