How to Increase the Size of a JPEG Picture

Wondering how to increase the size of a JPEG picture? I created this guide precisely to help you get that job done!

Whether you work with social media platforms, manage an online store, or have a website to promote, you constantly need your images to be the right size.

As someone who always handles pictures, I understand the need for a quick and easy way to resize images while preserving quality.

Today, I’m sharing my favorite online JPEG resizer tools and apps.

I’ll also walk you through the steps to increase the size of a JPG file on Windows, Mac, and smartphones.

7 Best Free Online JPEG Resizers

Not many people know this, but you don’t have to download an app or a tool to help you change the size of JPEG images.

You can swiftly resize JPG images online, no matter what image file you need to alter.

That means you only need a device with internet connectivity to tweak your JPG image size.

If you search for online JPEG image resizers, you’ll be met with dozens upon dozens of options. To save you the confusion, here are my most reliable recommendations:

• Adobe Express JPG Image Resizer
• XConvert JPG Image Resizer
• Resizing.app JPEG Image Resizer
• Shopify’s JPEG Images Resizer
• Pixelied JPEG File Resizer
• JPEG Optimizer
• Duplichecker’s JPEG File Resizer

How to Increase the File Size of a JPG Image Online

Now that I’ve shared my favorite online JPG image file resizers with you, I’ll walk you through increasing the size of a JPEG file using Adobe Express, my go-to online JPEG size changer.

Step 1: Open the Site and Upload Image File

Open your trusty browser on your PC, such as Google Chrome (you can use your phone’s browser, but it’s so much smoother on a computer).

Next, open Adobe Express in a new tab. You’ll see an option to upload an image. Click on that button.

This will take you to the resizing page where a box prompts you to add JPEG images, JPG images, or PNG images. (So that you know, JPEG and JPG represent the same image format)

You can click on the box and browse your computer’s JPEG files to find the image file you want to enlarge. Alternatively, you can drag and drop your JPEG file.

You can resize JPG images up to 17MB.

• See also: How to open JPEG files

Step 2: Set the Desired Size

Once you upload the JPEG image, you can access multiple options for resizing images.

You can increase its size for Instagram, X, Facebook, and other social media platforms. You can also customize your own size measurements or choose from standard sizes.

Step 3: Apply and Download

After you select the desired size or type it in, the image size will increase without lowering the image quality.

If you’re happy with how the resized image looks, simply click the download button to save and use it.

If you already have an account, the resized image will immediately download. If you don’t, you’ll be prompted to sign up. Don’t worry — it’s free!

How to Increase the File Size of a JPG Image on Mac

If you use a Mac computer, you can increase JPG image size in Preview as follows:

Step 1: Launch Preview

Double-click the JPG image to open it in the Preview app. Then click ‘Adjust Size’ or ‘Show Markup Toolbar’.

Step 2: Adjust the Dimensions

Now, you have multiple options:

• Increase the size by pixels by typing the value you prefer into the box next to ‘Width’.
• Increase the size by a percentage from ‘percent’ in the pop-up menu next to ‘Width’ and ‘Height’.
• Choose a larger size from the ‘Fit into’ menu.

Save the resized image by opening the ‘File’ menu and clicking ‘Save’.

How to Increase the File Size of a JPG on Windows

 

If you use a Windows computer, you can increase JPG image size in Paint as follows:

Step 1: Open the Image in Paint

Browse your JPEG images until you reach the image you want to enlarge. Right-click on it and choose ‘Paint’ from the ‘Open with’ menu.

Step 2: Resize and Save

Navigate the toolbar and click the ‘Resize’ function. Choose ‘Pixels’ from the displayed options.

Type the desired size in pixels into the box next to ‘Horizontal’. Once you click ‘OK’, the resizing will take effect and you can click ‘Save’ from the top of the page if you’re happy with the result.

How to Increase the File Size of a JPG on iPhone/Android

If you’re working with JPEG images on your smartphone, you can use the Image Size app to resize JPG images on your iOS or Android phone as follows:

Step 1: Download and Launch the App

You’ll first need to download the Image Size app from the App Store or Play Store. Next, tap the app’s icon to open it.

Step 2: Select the Photo

Tap on the image icon located at the top left corner of the screen.

Navigate the images, select the one you want to enlarge, and then tap ‘Choose’ at the bottom right corner of the screen.

Step 3: Resize and Save

Now, you get to select your preferred resizing option from the tabs above the image. These include resizing by pixels, inches, centimeters, and millimeters.

Type in your desired size, and if you want, crop the image. Once you’re done, save the resized image by tapping the download button at the bottom left corner of the screen.

6 Best Free JPEG Resizer Apps (Android & iPhone)

If you’re relying on a smartphone to resize JPG images, here are the top JPG image resizer apps you can use for free:

• Image Size: iOS/Android
• Pixlr: iOS/Android
• Fotor: iOS/Android
• Picsart: iOS/Android
• Resize: iOS/Android
• InstaSize: iOS/Android

JPEG Resizer FAQs

How do I increase the MB size of a photo?

You can do so by increasing the size of the image using an image resizing app or online tool.

How can I resize several JPEGs at once?

Many image resizing apps and online tools allow you to upload multiple JPG images to resize at the same time.

How can I increase the file size of a JPG in kb?

You can increase the size of JPG images online on Windows (Paint), Mac (Preview), and smartphone apps. Make sure the option for maintaining the aspect ratio is engaged.

How do I increase the file size of a JPG image without changing dimensions?

To increase the size of JPG images and keep their dimensions intact, you need to increase their resolution. You can use Hadbomb or Photoshop to do this.

How do I reduce the file size of a JPG file?

You can do so using any of the JPG image resizing tools mentioned above.