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Adobe Photoshop CS3 Batch Resize Tutorial
Step One: Find Some Images!
First things first, you will definitely need some images to resize. How you obtain these images is up to you, but for the purposes of this tutorial, I will be using photos I've taken with my camera to use on eBay.
You'll want to make sure all of your images are in a folder together. If they're scattered all around in different folders, this will not work! Drag all of your images into one folder if they're not all ther already, and let's begin the fun stuff.
Step Two: Open up that Photoshop!
Photoshop is your friend! I am using Photoshop CS3, but I'm sure CS2 and newer versions will work for this as well. I cannot guarantee other versions will have this set up the same way, though, so if you're following this using a different version than CS3 and it doesn't work, I apologize. I have no experience with other Photoshop versions so I can't help you if you're using one!
Moving on, you now have Photoshop open. Go ahead and open your folder separately, not in Photoshop, so you remember where your images are, and so you can see them if you need to.
Step Three: Open the Image Processor Script
Now it gets a little complicated, so make sure you're paying close attention. You're going to want to hit File -> Scripts -> Image Processor. This is the script that will do all of the grunt work for you; this is what tells Photoshop to resize your images.
Once you have the script window open, you'll see a lot of options. Don't get overwhelmed, as most of these options are unnecessary for what we're doing.
Step Four: Select Your Folder.
Right now, the option here that you'll want to select is Select Folder. You'll hit this, and select the folder your images are in. My folder is called 'ebay,' since these images are for eBay. Yours can be called anything, so long as you remember the name!
The check box under the button that says 'Open first image to apply settings' can be ignored; I've never used it.
Step Five: Select Resized Images' Destination.
Now you're going to want to choose where the resized images will go. To keep things as simple and as straightforward as possible, select the Save in Same Location button. This means that your resized images will be in a folder nested inside your original folder.
Confused? Let me try to explain it a little clearer. Let's say your original folder is called 'ebay,' as mine is. If you select the Save in Same Location button, after you've run the Image Processor script, your resized images will be in a folder that's located inside your 'ebay' folder.
Step Six: Choose Image Quality and Size.
How big would you like your images to be? I chose 960x540 since my original images were 1920x1080; this way my new images will be half the size they were before.
Select the Resize to Fit option to ensure your images are kept in a decent aspect ratio. What does this mean? Well, have you ever seen an image that looked stretched or distorted? The apple to the right is distorted -- its aspect ratio is off -- and the one under it has a great aspect ratio.
If you want your images to look correct, you want a good aspect ratio.
Select the Save as JPEG option and choose a number from 1-10 for the quality. 10 is the highest quality, and 1 is the lowest. You will probably want to input 10, but if you need a smaller image (in bytes) pick a slightly smaller number. Personally, I wouldn't go below 6.
Why save as JPEG? PSD files are not straight image files; they're Photoshop files. PSDs are usually incomplete works that one has saved in Photoshop to continue work on later. If you draw or paint digitally, you will usually save your incomplete work as a PSD. If you want to upload your finished work, you would save your file as a JPEG or PNG. PNG is not an option here, though.
I don't know much about TIFF files, to be honest, but I do know that they're not as common and as easy to upload as a JPEG file. For simplicity, save your images as JPEG.
Step Seven: Admire Your Resized Images.
Don't worry about the bottom stuff here; the preferences section can be ignored completely. Just hit Run and watch Photoshop work! Depending on how many images you're telling it to resize, this process can take anywhere from a few seconds to a few minutes.
Do not close Photoshop while the script is running! You can risk affecting your images this way!
If you only see blank or transparent images in Photoshop flash by while the script is working, don't worry; this doesn't mean anything!
Quick Tutorial Recap:
Find some images, and put them in a folder.
Open Photoshop and have your folder available.
Go to File -> Scripts -> Image Processor
Select your folder.
Choose the destination for your resized images. Keep it simple by saving in same location.
Maintain aspect ratio when you choose your new dimensions.
Watch Photoshop work and admire your new images.
What's Your Image Editor of Choice?
And you're done!
Congratulations! You now have a folder full of resized images to do whatever with.
I apologize for my images being so small and blurry, but Hubpages won't let me upload them any clearer. I will be happy to reupload them to imgur and link them to you via private message if you need me to, just let me know!
Thanks for checking out my tutorial; I hope it helped!