Sharing your pictures with your friends is just as enjoyable as taking your pictures. Creating collages or mosaics from these pictures can be real fun. The caveat is, these pictures need to be re-sized for distribution, because the format that is stored on your camera tends to be too large for email or uploading. Resizing pictures can be cumbersome task with some of the in-built tools of your operating systems. To make things simpler for you, I’ve listed some easy image resize tips and tools. Also I’ve pen downed some considerations and explanation about images in general before going forward. That will help you in understanding different aspects of images.
Determine the distribution of the photos
Knowing how your pictures will be distributed determines the size and the resolution to which you will be resizing. More resolution means that your picture will be clearer at larger sizes. The computer measures the physical size of the photo in pixels. These are dots of color which, when placed together, form an image. Resolution is measured in pixels per inch (PPI) or dots per inch (DPI) and is the measure of how tightly packed the pixels are. If your picture has a low DPI, then it will be grainy.
- 300 DPI is the best resolution for printed photographs
- 72 DPI is enough for web based photographs
1. Using Photo Editing Software
If you have chosen to use Photoshop or other photo editing application, these are the basic steps ( I’ve listed some specific tricks to batch resize images using Photoshop towards the end of article ) :
- Open the application. Open the photo that needs to be resized.
- Under Image, click Image Size (in some programs, it’s Resample or Resize).
- Place the new values in the box for width and height. You can choose your resolution.
- Make sure that Constrain Proportions is checked. You do not wish your photo to become distorted.
- Click OK. The single photo is now smaller.
2. Windows Image Resizer [Microsoft PowerToys]
The Image Resizer is a great tool which came with Microsoft PowerToys for Windows XP. You can resize images individually or in batches using the Image Resizer. The ‘small’ setting is usually quite enough for leaving these photographs on the screen. One advanced feature of Image Resizer allows you to manually select the size of your photos.
This is a very handy JPEG resizer for large JPGs. Upload the picture that need to be resized. Choose the width and height to which you want the picture resized and click ‘Crunch.’ After uploading, Crunch 4 Free will offer several options for your photo. Select the one that you wish to use by right clicking and saving the image to your computer.
4. Gif Reducer
If you have GIFs, this will crunch them down to a reasonable size. You can upload up to a 1MB GIF to this program. It will reduce the number of colors that are within your GIF. You have the option of dithering your photographs or leaving them alone.
5. Puny PNG [Web based, Free with registration]
PunyPNG will convert your images from JPG or GIF into PNG. The application will choose the best file format in which to save your photo and convert automatically. By changing formats, you have no discernible loss of quality.
This online application will resize your JPGs and GIFs in 3 easy steps. Select the file that you wish to crunch, choose the resolution that you would like to save it to and click on ‘okay.’ This is a great solution for those who wish to resize their pictures for emailing.
With iResize, you can compress your image to pre-selected sizes or rotate your image. The software is completely web based with no requirement for registration. You are also not constrained to merely JPGs and GIFs.
8. Batch Image Resizing Using Photoshop Actions
If you have collected a group of images for a blog post and they all need to be resized to a particular width, it can take a long time to do so manually. Using Photoshop’s batching process you can automatically do this work.
You’ll need to setup a preset, which means you can use the same settings multiple times.
So in Photoshop, open your image and then click on the Actions panel. Now click on ‘Create new action’ and name it something relevant such as ‘Resize 500px Wide’. Now resize the image to 500px as usual then under ‘File’ select ‘Save for Web’. You can choose what format and image quality you want (bearing in mind that this will be invoked when you use this batch process again). Once the image has been saved, stop recording the action by clicking on the ‘Stop Playing/Recording‘ button on the ‘Actions’ panel.
Now when you want to resize a batch of images, go to ‘File’, then ‘Automate’ and finally ‘Batch’. After you select the preset, all you need to update are where the images are to be sourced from and saved to.
9. Batch Image Resizing Using Photoshop Image Processor
Photoshop Actions are quite advanced functionality and using them might be bit difficult for novice users. In that case, you can use this simple yet extremely effective tool in photoshop which is called “Image Processor” to resize photos in bulk. Here’s how to do it.
- Open Photoshop and go to File -> Scripts -> Image Processor.
- Select single image or folder of images to be resized in part 1 of the dialog box opened.
- Select destination location in part 2. If you’ll choose select in same location option, it will save processed images in a folder named “JPEG” (or respective for the file type you’ve selected in part 3). Or you can choose your own folder to save processed images.
- In File Type generally I choose JPEG as I work with that file type most of the times. Now here’s the crucial part of resizing. Check the box “Resize to fit” which will enable width (W) and height (H) boxes. In these boxes you should put the desired width and height of the processed images. Also you can choose quality of the resultant images. Quality of 3 will give you optimum resultant images in terms of quality and file size.
- Leave the other options as it is and press “Run”. All the images will be processed one by one so don’t be surprised if you see images opening up and getting resized automatically.
These are excellent programs on which you can simply upload, compress, and download the finished file. May all of your pictures be beautiful and great! Let us know if you know any other tool.