Resize JPG on Mac with Preview JPG Resizing App for iPhone Users: Image Size Image Size is an app that can help you reduce JPG file size in an iPhone. So, if you are using an iPhone, you can download this app for free. The app works quickly and easily. Preview, a program included with the Mac OS X operating system, can reduce the file size of photos. Most digital cameras use the JPEG file format when saving files, according to FileInfo.com, a resource for information about file extensions. Preview is able to save JPEG files at various levels of quality. Free online JPEG compressor tool by PS2PDF. Reduce image size by selecting the desired target size or quality. You can convert multiple files and large image files very quickly.
You're confusing a few different things here.
Maximum image quality and file size are not the same thing, for a start.
Files That Can Open Jpg Files
iPhoto never touches the original file at all. It opens it and as you make the edits to the application records you decisions in the database. When you view a photo in iPhoto it's a composite of the original and the decisions recorded, and applied live as you view.
If you want to use that photo for something then you have to export it. This make a new file with your photo in it. When you export you have a lot of options - including ones that will make the filesize bigger than the original. This User Tip
has details of the options in the Export dialogue.
Jpg File Size
If you use drag and drop from the iPhoto Window that's a form of exporting too -but you have no options there. You get the iPhoto Preview. That's a 'handy-good-enough-for-most-things version of the shot. If you want more options use the export command.
May 20, 2013 4:06 AM
You're confusing a few different things here.
Maximum image quality and file size are not the same thing, for a start.
iPhoto never touches the original file at all. It opens it and as you make the edits to the application records you decisions in the database. When you view a photo in iPhoto it's a composite of the original and the decisions recorded, and applied live as you view.
If you want to use that photo for something then you have to export it. This make a new file with your photo in it. When you export you have a lot of options - including ones that will make the filesize bigger than the original. This User Tip
has details of the options in the Export dialogue.
If you use drag and drop from the iPhoto Window that's a form of exporting too -but you have no options there. You get the iPhoto Preview. That's a 'handy-good-enough-for-most-things version of the shot. If you want more options use the export command.
May 20, 2013 4:06 AM