Resizing Photos Using an Apple/Mac Computer
Question: "Do you know of any programs recommended for Mac-users for creating web-optimized versions of photos? I noticed that the great free image-editing program IrfanView currently only works on Windows PCs, but I'm using an Apple PC to resize and web-optimize my headshots, comp cards, and other photos for my BackStage.com Multimedia Resume!"
Good question! The following info should help:
“Say you need to quickly resize or crop an image to send to a friend or post on your blog. There’s no need to open an image editor — Preview’s image-editing features can do the trick. To crop an image, open it and then click on the Select button in the toolbar (if you don’t see a square on this button, click and hold it and choose Rectangular Selection). Click and drag to create a rectangle around the area you want to crop. You can resize this rectangle by dragging one of its corners, or you can move it if you need to. Then choose Tools: Crop or press Command-K. If you like what you see, save the file; if not, press Command-Z to go back to the original image. You can then resize your image and even change its resolution. Choose Tools: Adjust Size to enter a width or height in pixels, inches, or other units (choose the unit you want from the pop-up menu to the right of these fields). To maintain the image’s proportions, make sure to select the Scale Proportionally option. To make an image smaller without losing quality, keep Resample Image selected. . .," Kirk McElhearn explains in an article on Macworld.com
Preview also lets you adjust image resolution/quality, which can significantly reduce the total size of your photo file (meaning that it'll upload, email, and open faster) without having to just rely on shrinking the dimensions of the photo.
And the Apple website also recommends a free program called RapidoResizer for easily resizing photos.
And there's a free Apple-approved widget called Photo Drop available for fast resizing/editing.
And you might already have iPhoto on your compute -- it's a little bit more complex of a program compared to some of the others mentioned here, but it can definitely resize pics, and do a lot of other cool image-editing stuff as well. For more help resizing images with iPhoto, click here.
And then there's the free iZoom program for Macs, although I don't know if it's officially recommended by Apple or not.
Also, from what I’ve heard, the program GraphicConverter is the closest equivalent to Irfanview for Mac computers – it’s supposed to be easy to use and very powerful. Technically it costs $35, but I think the “free trial” of GraphicConverter is almost unlimited, which means you can use it forever until you start to feel guilty and decide to pay them (recommended, if you find the program useful).
Tell us if you find a favorite among this bunch – we’d be interested in being able to offer Mac users more specific advice.
Quick Tip: By reducing the total dimensions of your photo just a little (for online use, photos should not be larger than your monitor's default "desktop size" -- e.g., you shouldn't need to zoom out to view the full photo) and then lowering your photo's resolution a little (72-300DPI is recommended for most online photos -- going over 300 is usually overkill for website and email use), you'll be able to easily create a web-friendly version of your photo that fits within the recommended upload size-limits of sites like BackStage.com.
Note: Save your photo files using the ".jpg" file-extension before uploading them to BackStage.com! In most photo viewing/editing programs, you can simply choose the "Save As" command from the menu to bring up an option that will allow you to correctly save your photo as a .jpg image file-type. This "Save As" screen may also give you the option to quickly reduce the file's size (image quality/resolution) during the re-saving process.
- Mac World's Easy JPG Resizing Tips.
- eduGuru: Optimizing Web Images (why & how)
- Picnik: High-Quality Online Image Resizer (free web-based image resizing -- no software-downloading needed!)
- Additional help topics related to posting headshots and resumes on BackStage.com
--Luke Crowe, National Casting Editor, Back Stage