Circle Crop resizing and align using Irfanview

I can go to circle crop F12 and I use Shift to drag and it makes a perfect circle. But I can't figure out how to get the circle to crop, in the right place? Maybe this is the wrong way to start?

Is there a way to make a circular selection so I can erase around that? I understand there's no true circle crop, but I'd like to create something that makes the circular chip, on a white background.

I tried the shadow, but sometimes the background doesn't get taken out. I think the idea is, make a square around the object and then add shadow or shape.

What's the best way to remove a background from a circular object?

Edited by Orange Blossom, 23 December 2022 - 01:14 AM.
Moved to more appropriate forum. ~ OB

In Irfanview there is an option < Image > Replace colour . . .> which will give you a white background but I don't see an option to make the background transparent. You can do a lot in Irfanview but not everything ! 

My main image editor is Serif's PhhotoPlus which contains a tool called 'Magic Wand' and the pop-out description says 'Select pixcels similar in colour'. Once selected you can then use the eraser tool to flood fill the selected area as transparent. You will find similar tools in Gimp which as another highly capable graphics editor and is a free download as it is open source software. If you do try using an application with the ability to create transparent areas in an image you have to save it as .PNG as .JPG does not have the ability to save transparencies.

Chris Cosgrove

Thanks for that advise. I hadn't thought of color changer. Yes, except for PNG and GIF, for things that go on the web or email, there is no "invisible" or "Transparent" background. I just wanted a circle crop and white. Mostly to remove distractions and the blue tint from the scanner. I can work in Elements or Photoshop, which takes a bit of selecting, then erase, move the selection, and erase... Photoscape (free editing software) has a circle crop, which works.

Adobe allows two computers, I don't want to have to install Photoscape on five laptops and three desktops, just so I can crop circles now and then. I'm a big fan of Irfanview and that's on every computer I own, for quick and easy editing. No it's not like Photoshop, but it's perfect for small and easy and does some amazing things, like the bulk editing/rename/resize?

If I could just figure out how to make a circle selection with IView that I can move or adjust? By the way, holding the Shift key while selecting is just like Adobe software. It creates a perfect circle, not an ellipse.

So maybe the question is, after I make a selection, how do I change the position or adjust the size. I can never get the circle in the right place to start with anyway. There has to be some trick, and I can't find it.

Best I have come up with for IView, which only works for a single object, is crop tight, rectangle, on the four sides to the edge of the subject, then Options > Add Shadows, Shapes, Rounded corners... which pretty much takes away the corners and leaves the center circle.

While this works pretty well, the flaw is the one object only and the inherent problem with using a scanner. The circle (a casino chip) image that the scanner makes, isn't a perfect circle. So filling in the corners, leave the oblong image. But it's pretty good.

Thanks and I'll be busy now clearing after the blizzard and working on other things, new projects, other obscure questions, and some day, I'll sit up and say "How do I make a circle selection and circle crop a white background, with Irfanview?"  And dive back in.

I briefly checked YouTube and the Irfanview forum and the method you describe seems to be about the only way to get the results you want.

"Best I have come up with for IView, which only works for a single object, is crop tight, rectangle, on the four sides to the edge of the subject, then Options > Add Shadows, Shapes, Rounded corners... which pretty much takes away the corners and leaves the center circle."

Doing this in Photoshop is super simple and can be adjusted for size, position and ovality.