Mac App To Reduce Size Of Jpg Attachments

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When it comes to digital photo editing, one of the most important steps of this process revolves around image resizing. Resizing photos can be beneficial from multiple perspectives.

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First of all, the size of your images has a direct impact on the performance of your website and blog. Large files will affect in a negative way the loading speed of your pages and hence provide an unpleasant user experience. Reducing the size of your files will speed up the loading time of your pages, which will make visitors stay longer on your website.

I'm sure I used to be offered to resize photos but I can't see this now on the gmail app on android phone or via the web on mac. Instead I created a collage of the 4 photos I wanted to send. The file size of the collage was a fraction of even just one of the original photos! The 10.5GB Message Attachments folder is now about 7GB. That was a welcome surprise since many of the attachments are already compress formats like.docx.pdf and.jpg. The top three folders are non-Outlook examples for reference. The Video and Top Shots folders have video and JPG files which are already compressed, so the disk space saved is tiny. How Do I Reduce JPG Attachment Sizes When Saving/archiving Email On My Mac? I save most of my received emails into designated folders. Most often when receiving a photo from someone I either view and then remove the attachment before saving or I add the photo to my own “Photos” and then remove the attachment while saving the email proper. All in all, you can use the tools shared above to reduce JPEG file size quickly and easily. Online Image Compressor and Paint are free to use. And Online Image Compressor enables you to reduce JPEG file size on Mac, Windows, iOS and Android systems. Nevertheless, if you are looking for a stable and fast file compressor, you may try ApowerCompress. The Squash app for Mac keeps quality while reducing jpg filesize. Squash for Mac is a native Mac app that's fast, fun and powerful. Squash can reduce the file size of images for faster uploading, perfect for sharing on social media. Reduce the size of email attachments.

At the same time this operation will help you free up significant disk space and it will make your photos significantly easier to share with others.

If you want to learn how to resize images on Mac with ease, then this article is definitely for you. Below we’ve compiled a list of 10 apps that enable you to accomplish your task quickly and effectively.


The built-in Preview app can be a good place to start if you want to optimize your images. This native program is not a basic photo viewer. On the contrary, it can help you improve your photographs in several ways, including to batch resize them.

Before starting, make sure that all your pictures are stored in the same folder. Next select all of them and open them in the Preview app. In the newly-opened window, go to Edit in the menu bar and Select All. Now, with all the images selected, go to Tools in the same menu bar and then Adjust Size. The app gives you the option to select one of the preset resolutions or to manually type in the preferred size for Width or Height. Once you’ve entered the desired values, all that’s left to do is to save your files.

Besides resizing, the Preview app lets you perform other optimization-related operations, such as converting to another image format, rotating or flipping groups of images.


BatchPhoto is an easy-to-use app to resize images in bulk on Mac. What makes it so easy? Well, all you have to do is follow a simple, three-step wizard: add your photos, apply the desired edits and select your output format and folder.

The app allows you to change the size of your photos by entering the desired dimensions for width and height expressed in either pixels or percentages and offers a preview tab so you can see how your shrunken image will look. Additionally you can find an advanced resizing filter, that enables you to change the DPI of your images or specify the desired document size in inches.

BatchPhoto focuses on improving users’ productivity and that’s why it comes with the option of saving your settings as profiles and loading them later, in another session. Another productivity booster is the Folder Watch, particularly useful if you’re working constantly with new images and need to reduce their size. This feature makes your job so much easier, because it monitors certain folders for newly-added images and automatically applies a set of edits which you previously defined.

If you need to further optimize your photos, BatchPhoto offers plenty of options. You can convert, auto crop and rotate, watermark, date stamp or rename multiple pictures at once. The app also provides options to retouch your images by adjusting the brightness, contrast or saturation or by sharpening them. Additionally you can apply special effects to your pictures, like sepia and black and white and add borders and frames.


If you don’t feel the need to install another app on your Mac, PhotoSize is the right solution. This is a free online tool which you can use to resize more images at the same time. The process is quite simple and structured in three steps: add your images, apply the Resize filter and last choose your image format and destination folder.

The Resize filter gives you the possibility to choose from a wide range of presets, including Full HD quality, or to manually enter the desired values for width and height. PhotoSize lets you upload and export to some of the most popular image formats like JPEG, TIFF, PNG, PSD or GIF. In addition to resizing and converting, you can also crop, rotate or retouch your photos in bulk.


Mac app to reduce size of jpg attachments online

PhotoBulk is a Mac app which you can efficiently put to use to reduce the size of your images. The app comes with a simply-designed interface, split in two main columns: on the left side is where you select the desired operation, while on the right side you can make the necessary adjustments. A live preview is available, as well as the possibility to save your settings as presets to streamline your work.

With PhotoBulk you benefit from multiple resizing options. You can choose from preset dimensions, enter the new dimensions in the box or perhaps resize by percentage. If you wish to save disk space, you can also optimize the file size of your JPEG or PNG files without altering the resolution or quality. The app places at your disposal options to add a watermark to your photos, as well as rename and convert them.


If you need to considerably reduce the size of your files from let’s say 10 GB to 5 GB, without losing quality, JPEGmini is the tool to try. How can it do that, you may wonder. Well, the tool has been conceived to compress file size by removing any unnecessary binary information from your photos when you export them.

JPEGmini is focused on automation, so it doesn’t leave room for the user to take control. All you have to do is drag and drop your images and allow the optimization process to begin. The only thing you can choose is whether to overwrite the original pictures or export the processed ones in another folder. You can also change the resolution of your photos, by selecting from a couple of predefined templates for width and height.

It’s important to specify that the tool works only on JPEG’s, which means you can’t add RAW, PNG or TIFF files. JPEGmini is available as a standalone app, but also comes as a plugin for Lightroom and Photoshop.

Resize Sense

Resize Sense is a simple and straightforward photo resizer for Mac. It’s designed to help users simplify their work by adjusting images in bulk to the right size for social networks, email or various graphic design projects.

The app offers numerous alternatives to resize your photos: by selecting fixed dimensions, to fit to width and/or height, by the longest or shortest edge, by setting the maximum file size or by only cropping, which lets you crop and straighten your images using a predefined aspect ratio. Resize Sense allows you to build your own presets and easily apply them later to a new batch of images.

Further options include flipping, rotating and renaming pictures, as well as editing the IPTC and EXIF metadata.

Tweak Photos

Tweak Photos is a batch editing app that offers plenty of features to optimize and enhance your images. The app is simple to use thanks to the intuitive layout and breaks it all down in easy-to-follow steps: add photos, apply the desired effects and select your Save options.

With Tweak Photos you can easily resize your photos in pixels or percentages and auto-correct the orientation based on the EXIF metadata. The app also allows you to crop, rotate and watermark your pictures, as well as enhance them by reducing the noise or adjusting things like brightness and contrast. To improve your workflow you can save your settings for later use.

Movavi Photo Manager

Movavi Photo Manager is not your classic Mac image resizer. As the name indicates it, this app’s main purpose is to help you properly sort and organize your images, but this doesn’t mean it doesn’t come with useful photo editing capabilities. On the contrary, it places at your disposal a decent amount of features to optimize and enhance your pictures. Of course, batch resizing is one of them.

If you need to make your images smaller, Movavi Photo Manager offers two alternatives. The first option is to simply type in the new dimensions for the width and height in pixels, percents, centimetres or inches. At the same time you can select from the multiple preset sizes, that range from 640 x 480 to 3200 x 2400. It’s worth mentioning that the program will automatically overwrite your original photos, so it’s best to create copies before making any changes to them.


If you’re looking for a simple app to reduce photo size on your Mac, Sizerox is definitely worth a look. This app may not have the sleekest design and may not offer the same multitude of editing options as other ones, but it makes up for it through ease of use and its batch ability.

You can change the image size by percentage, ratio, fixed width and height, longest slide and more, the options are numerous. Additionally you can perform other edits, such as rotate, crop or rename. You can also protect your photos by adding a customizable text or logo watermark.


Image Resizer

Image Resizer is our final proposal for reducing the size of your pictures on Mac. This app is pretty basic and doesn’t offer too many options, but it gets the job done efficiently when it comes to changing photo size. You have the possibility to resize images by custom width and height, rotate, crop and flip them, as well as convert them to different formats.

How to reduce photo size on your Mac? It should not be a difficult question to answer. What should be the easiest method to resize a photo for free? How to compress the photos for a printer, website and email? How to get a desired resolution via Preview? Just learn more details about the methods to resize and compress photos on your Mac from the article now.

Resize a Photo on Mac

Part 1: How to Resize Photos Online on Mac

What is the easiest way to resize photos on a Mac? Whether you need to compress the photos to a smaller size automatically, or shrink them within a batch process online, Free Online Image Compressor is the online photo converter for Mac you can take into consideration.

  • Drag and drop the photos online to compress and photos automatically.
  • Batch shrinks a large number of photos into a smaller size with ease.
  • Check the process and reduce ratio for the photos on the browser.
  • Support photos in JPEG, PNG, SVG, GIF and more other formats.

Step 1Go to the free online image converter on your MacBook with any browser. Click the red “+Add Images” icon to load the desired photos into the program online.

Step 2Once you have uploaded the images online, it will compress photos on your Mac automatically. Just check the process and the reduction ratio within the online image converter.

Step 3Click the “Download All” button to download the reduced photos to your MacBook. After that, you can send the compressed photos to your email as attachments.

Part 2: How to Shrink Photo Size on Mac with File Format

Just change or convert the file format is another easy method to shrink a photo in size. If you have a RAW image, which contains EXIF information, such as camera info, ISO, shutter speed and others. When you convert RAW to JPEG with a smaller size, you will remove the EXIF information and reduce some of the photo quality. Of course, you can also resize photos on Mac by converting PNG, BMP and SVG to JPEG.

Part 3: How to Reduce Photo Size on Mac in Preview

How about the default methods to reduce photo size on Mac? Preview is a photo viewer that enables you to adjust the photo files on Mac. Whether you need to compress photos for a printer, or crop them for website, you can find the different methods as below.

Resize Photos on Mac via Adjust Size

Step 1Launch the Preview app on your MacBook. Go to the “Tools” menu and choose the “Adjust Size” option.

Step 2Tweak the different parameters for “Width”, “Height”, “Resolution” and other parameters, you can also check the options for “Scale proportionally” and “Resample image” to reduce the photo on Mac.

Step 3After that, you can check the “Resolution Size” to find whether you are satisfied with the output and click the “OK” button to save.

Adjust an Image and Maintain 300DPI

Step 1In order to get the best quality possible at 300DPI, which is a good option for print, you can uncheck the “Resample image” option. Then you can find the “Scale proportionally” option greyed out.

Step 2Change the size of “Resolution” to 300 pixels/inch. Then tweak the “Width” option and the “Height” option to reduce the size of the photo on your MacBook Pro. Click the “OK” button to confirm.

Mac app to reduce size of jpg attachments free

Step 3When you print the image with the target photo printer, you can find a smaller photo with a clearer resolution with more compact pixels.

Crop an Image to Reduce Photo Size

Step 1When you need to cut out the desired part only to resize the photo, you can load the image to Preview and use the mouse to cut out the desired part with blue box surrounds.

Step 2You can get the particular size with a little counter in the bottom right corner, such as 900X600 when you drag the box, get the desired dimension according to your requirement.

Step 3Once you have captured the desired size of the photo, you can use the Command + K to crop and resize the photo on Mac.

Part 4: How to Compress Photos for Email on Your Mac

Of course, when you need to compress photos on Mac for Email, you can take advantage of the email application to compress the photo for you directly. Here is the detailed process you can follow.

Step 1Just drag and drop the photo into the email application on your Mac. Please do not use the photos as attachments.

Step 2You can find the dimensions of the resized photo at the bottom of the composition box, which you can find “Small”, “Large” and “Actual Size”.

Step 3If you need to shrink the photos on your Mac, you can choose the “Small” option from the bottom of the image.

Part 5: How to Shrink Images on Mac with Photos

Photos is another default photo resizer to compress and crop the photos on Mac. What is more important, you can directly resize the photos synced from your iPhone or other iOS devices with the method.

Step 1Simply open the desired photo in the Photos app on your Mac. Just as mentioned, you can get the images from your iPhone directly.

Step 2After that, you can tap the “Edit” option and choose the “Crop” button on the right panel to resize the image on your Photos.

Step 3Drag and manipulate the white square to get the desired part of the photo accordingly.

Note :

Photos app is the replacement of iPhoto on Mac, if you use old Mac, you can reduce the photo size with iPhoto by following the similar steps. (Photos not showing up on iPhoto?)

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When you need to resize or crop the photos on Mac, here are the recommended methods you should know. You can resize the photos for printers, emails and websites with ease.

Reduce File Size Of Jpg

Not limited the above solutions, you can also compress the images in PowerPoint and other tools. If you have any other queries about how to resize or compress a photo on a Mac, you can share more detailed information in the comments.