What is a good free image resizer for mac?

Photoshop can do it.

Image -> Image Size

Otherwise, RapidoResizer, formerly known as Resize ‘Em All.

you may mean crop tool? It is in photoshop. You can also make a selection and go to edit>crop.

If all you need to do is resize or crop, then I would recommend something like Imagewell. It is much lighter than Photoshop and won’t bog down your system. Photoshop is total overkill if all you need to do is resize something.

Image Shackle is a widget that just does resizing.

you can also load the images into iPhoto and then export them at whatever size you want.

Preview. Came with the mac.

to ad on to Lefteh, you can also automate this. if you create an action (use the action pallet, the buttons on the bottom are just like on a VCR) then go to FILE>Batch and you can tell it to go to a folder and do all the files in the folder.

It is always smart to do one or two files first just to make sure you get what your expect.

You can also automate image resizing using Automator, which should have come with your Mac. There are a bunch of image manipulation actions built in.

Automator can resize images.

Yes, as lapilofu pointed out :)

Not! Try it…

do you need to download an automator script? you can doit yourself but if it hard to you I can made one for you.