Nearly all of us these days have hundreds – if not thousands – of digital photos stored on our phones, tablets and computers. Not all of these pictures may be the size we need for printing or sharing purposes. Resizing that many snaps one at a time could take you all day… or several days, even! Thankfully, there are multiple options for batch resizing multiple photos at once! You can use Windows, macOS, or any of a number of free online photo editors.
Free Batch Image Resize
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In this article, I am going to show you how to batch resize using both Windows and Mac as well as two separate free online photo editing programs. Let's get to it!
Batch Photo Resize Mac
How to Resize Multiple Images at Once in Windows
Lightroom cc mac os. The best part of doing this is that not only will the actual size of your photos be changed, the file size will be reduced. This saves space on whatever medium you have them stored on.
Performing this is easiest if you have all of the photos you wish to resize in one folder. Right-click on your desktop (or in your Documents or Photos folders) and choose 'New Folder' and give it a name.
Head into your photos and choose all of the ones you wish to resize. If you are not sure how to select multiple photos at once, never fear! Click the first photo, then hold down your 'CTRL' key and continue single-clicking on each photo you wish to resize. Once you have chosen them all within a specific folder, let go of the CTRL button and right-click on any of the photos and choose 'Copy'.
Now, go back to your desktop and double-click to open the folder you created. Once it is open, right-click anywhere and choose 'Paste' so that the photos you just copied automatically show up there!
If you have photos in other folders you wish to resize in this batch, follow the steps above until everything you need is in your new folder. Now…
With your new folder open, click on ONE of the photos. Then, hold down the 'CTRL' button and press the 'A' key. This will select all of the photos quickly for you. Now, right click on one photo, choose 'Send To' and then 'Mail Recipient'. Don't worry – we aren't actually emailing these!
A little window to attach files will show up now. Choose the size you wish to change the photos to here.
The window will show the quick progress and then a box will likely appear stating there is no program associated to use. That's okay – we don't need one! If you do use Outlook or Thunderbird or another email program, ignore it when it opens.
Go to your search box in Windows and type %temp%. You'll see an option to open up your Temporary folder. Go ahead and click it and voila! Your resized photos are right there!
How to Resize Multiple Images at Once Using Mac
- Select all of the photos that you need to resize.
- Right-click them and choose 'Open with Preview'.
- When you are in Preview, click on 'Edit' and then choose 'Select All'.
- After all the pictures are selected, head up to 'Tools' and select 'Adjust Size'.
- Select the 'Scale Proportionally' box so that your photos are not all wonky looking.
- Enter the dimensions you wish to use for your snaps.
- Hit 'Save' and then just close it all out and you are finished!
How to Resize Multiple Images at Once Using PicResize
PicResize makes changing the dimensions of multiple photos so simple! Head over to the site and click on either 'Batch Resize' at the top of the page or 'Multiple Photos' on the right.
Now, click on 'Add Multiple Pictures'.
Select all of the photos you need and tap 'Add'. You'll next see the following box… you will want to click on 'Upload Files'.
After they have all uploaded (the time this takes depends on the number of pics you are uploading as well as your Internet speed), you will need to choose the size you wish to reduce them to as well as the format of the finished product (such as .JPG or .PNG). As soon as you have made your choices, click on that pretty blue 'I'm Done! Resize My Photos!' button.
You will now see the progress of the resizing going on. IMPORTANT NOTE: on this page, right underneath the progress meter, you will see where it states that all of your photos will be immediately deleted, along with a link to the privacy policy. You do not have to worry about the website having your pictures floating around the interwebs for others to see and use.
The last step will be a window that opens telling you that all the snaps have been successfully resized. You are now able to download to your computer in a zipped file, re-edit what you just did (to change the file type or size), create a whole new batch and then delete immediately from servers.
You're all done!
How to Resize Multiple Images at Once Using Bulk Resize
This is another free website that allows you to quickly resize a large amount of pictures, and the last method I will show you today. This one is my personal favorite to use because it is so simple and fast, and does not even upload your pictures to a website or server. The photos are changed right on your computer!
Head over to Bulk Resize, and then you will immediately click the green 'Choose Images' button.
Your picture folder will open, allowing you to select everything you need to. You will then be taken to the following page:
You can choose between several options here. The first is 'Scale'. The lets you simply reduce the photos by whatever percentage you choose. Next up is 'File Size'. This option is honestly only used if you are worried about saving some space on your computer or device. The third option is 'Exact Dimensions'. Keep in mind these dimensions are in pixels, not inches! You can also use one of the last three options if you are more comfortable with manipulating images. However, I highly suggest using either the first or third option here. As soon as you click the go button, your photos are resized and a box will pop up asking you where on your computer to save the finished product, which will be in a zipped folder.
What's your favorite way to resize photos? What other questions about manipulating pictures do you have for me?
Happy photo taking!
With the size of the photo some digital cameras and smartphones can produce, it's entirely possible for you to have images with a file size of several Megabytes each. Having files like this is great when you want to view them in high quality or print them out. When it comes to distributing them to others, uploading to online photo albums, or just storing them on your phone, keeping huge files is a waste of time and bandwidth.
Shrinking your images to a lower resolution or converting them to a more size efficient format before emailing or uploading is a sensible solution. It's far easier to shrink a 10MB JPEG file down to 1MB and send or store that while only noticing a small drop in quality or not even seeing a difference at all.
We've previously listed 10 online services where you can upload and resize images from your web browser without installing any software but they are not meant for multiple images. Here are 10 free options to help you convert and resize multiple images locally on your own computer.
1. Microsoft PowerToys for Windows 10 / Image Resizer for WindowsOlder users might remember PowerToys from the days of XP and Windows 95. In 2019, Microsoft resurrected PowerToys as an open source project for Windows 10. One of the returning features is the image resize tool which is based on Image Resizer for Windows from Brice Lambson. You can use either software on Windows 10 but Image Resizer is the only one that works on Windows 7 or 8.
Select the files to convert in Explorer and click on Resize Pictures from the context menu. A small window pops up with some preset sizes, a custom size option, and some checkboxes for overwriting and downsizing. When resizing, a value of 0 (or blank) will proportionally resize that dimension. For example, a width of 1600 and a height of 0 will make all images 1600 pixels wide and individually adjust their height to match.
In the Options window, you can add your own presets, adjust quality/compression, and make up your own naming scheme. Image Resizer has its own options window while PowerToys has the options in its main user interface. If you don't want the extra tools in PowerToys, install Image Resizer. However, development has shifted solely to PowerToys and future updates will be for the PowerToys version only.
Download Microsoft PowerToys for Windows 10 | Download Image Resizer for Windows
2. FastStone Photo Resizer
FastStone's tool is a powerful program for batch converting images. It also has a dedicated batch renaming function in case you don't want to change the files but give them more orderly names. Photo Resizer includes its own file browser in addition to the standard drag and drop, and the amount of supported images is quite large with Photoshop PSD files and ICO icon files also included. There are seven output image formats, one of which is PDF.
The Advanced Options button (click the checkbox first) opens up another whole new area where there are a number of useful and advanced functions that can be applied to the images. These include; resize, rotate, crop, canvas size, color depth, brightness/contrast/gamma/sharpness adjustments, change DPI, add text, add a watermark, and border/framing/shadow effects. Check the Resize box to show the resize options.
Resizing can be by pixels, percentage, physical print size, or based on one side. There's also some settings for cropping or filling if the image proportions differ from the original. Both setup installer and portable versions are available. The excellent FastStone Image Viewer also has a basic resize option and is worth looking at if you want to combine an image viewer and some simple conversion tools.
Download FastStone Photo Resizer
3. IrfanView
The well known and popular image viewer IrfanView boasts quite a powerful batch conversion function which is accessible by pressing B or from the File menu. There are three main modes; batch conversion, batch rename, or both in combination. As you might expect, it can load and save a large number of different file formats, and settings for Exif data, transparency, compression, and quality are accessed through the Options button.
IrfanView has an Advanced checkbox and button that gives you the opportunity to make a large number of different adjustments to the images such as crop, resize, DPI, color depth, rotate, flip, overlay, watermark, and sharpen or blur functions to name just a few. The resize function itself has options for width, height, long side, short side, image size (in Megapixels), or a percentage. Various other resize options are in the lower left of the window.
The sheer amount of options might be slightly overwhelming for some, but the IrfanView batch conversion function has a great deal of power behind it. A portable version is also available and because it's a great image viewer and has options for the command line as well, IrfanView is a useful program to have around.
Download IrfanView
4. XnResize, XnConvert, and NConvert
XnConvert is a free and comprehensive piece of image processing and conversion software. XnResize is essentially the batch image resizing part of XnConvert ported into a standalone program. As that is our goal here, we'll look at XnResize but if you want more features, try XnConvert. XnResize and XnConvert are available for Windows (setup installer or portable version), Mac, and Linux.
One issue with XnResize is it doesn't accept dropping folders onto the window. However, folders can be recursively added with the 'Add folder' button. From the Action tab, you can choose the resize options from presets or enter dimensions manually and choose the mode of fit, fill, longest/shortest side, width, or height. The output window is where you select the save location, naming options, and save format. There's dozens of different output image formats to choose from.
Download XnResize | Download XnConvert
NConvert
This tool is also worth mentioning because it's basically the command line version of XnConvert. If you want to resize, transform, filter, adjust, or add effects to images from the command line or a batch script, download and try NConvert.
Download nConvert
5. Batch Convert Images From A Webpage
This method is not actually what many users might think it is. You don't upload anything to the internet as all the work is done within the browser using Javascript so the images never leave your computer. A number of websites can resize images using this method. They all work in a similar way and the only real differences are the options each one has. We'll look at Bulk Resize Photos.
Bulk Resize Photos is quite good because it offers a number of different ways to process the images. You can resize by percentage scale, file size, exact dimensions, width, height, or longest side. Simply drop the images onto the window or browse your computer, select the resize method and its options, then click Start Resizing. Single images will save normally but multiple images will be saved into a Zip archive.
The Expert Mode button gives options for saving as JPG, WebP, or PNG, and changing the quality level. Bulk Resize Photos also has some useful options like a URL where you can visit the site with the same settings applied each time and a Chrome App that acts like a standalone program.
Visit Bulk Resize Photos
Other webpage based image resizers we tested were Image Resizer Online, Birme, and RedKetchup Bulk Image Resizer. Do note that none of the online converters we list support folders or recursive processing, only image files are accepted for drag and drop or file browsing.
