PS: I may come back for more -*my troubles aren't over yet. That way, the dimensions were easy to read in Preview's thumbnails down the side of the screen. jpeg file (I found it most helpful when I had file dimensions in the file name, like '3840 x 1200.jpg' or something short-and-to-the-point. So I *really* like your method of creating a 'mask' from a random photo by renaming it, adding a coloured rectangle, resizing what ensues, and exporting that to some appropriately-named. Preview is good, and is less of a bother to export things from - I mean, really, 'Who does Photos think it is', to import stuff out of Finder, and then ask me to re-export it to Finder - it's all a lot of work, thank you very much, Apple. There are a couple 'toggles' (right word) to get it right, and fit into a square.) I find it singularly annoying that I can't resize an image (easily) in Photos -*That would make it intuitive to try masking the image with my custom aspect ratio crop (Facebook has some version of what I was hoping for, as I recall, when you change or upload Profile Photo. Sound like a lot of work but once set up it can go pretty fast.Īs it turns out, for what I'm trying to do, there are pros and cons to each method.

Once the picture is like you want it, Export it with a new name, don't use Save or Save As. Now you can drag the picture around till you get what you want. You can then drag the blue handles to cover the white with the picture. Tap on a picture in the side bar, then Tap on the picture and use command c to copy the picture, next tap on the white template in the side bar and it will be in the center, tap on it and use command v to paste your picture on the template. Select a few of the picture you want to resize and drag to the doc and drop on Preview and they will now show along with the White Template you just made. Drag it out to cover the picture and save again. Now you can use the Markup menu to select the Square Box tool, with no outline and a White fill. Since you can't start from a blank image in Preview you will have to make one out of another picture, open any picture and Duplicate it from the Preview File Menu, Give it a new name like Realtor Template and save it. Preview will work too, but you will have to make a Template from another picture, again make a Duplicate before you start. I would make a Duplicate of the picture before I start. You can then drag the picture around till you get what you want. From the picture you want to crop select and at the top Right hit Edit, next Hit Crop at the top middle and from there scroll down to the bottom and select Custom. The easiest may be to use 'Photos' as long as all the photos are larger than what you want to crop. There are 2 ways of doing this with what is already on your Mac.

Crop image mac