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2025 Guide: 5 Ways to Increase Image Size in KB
Learn how to increase photo size in KB effectively with simple methods. Discover tips and tools to enhance your photo resolution without losing quality.
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2025 Guide: 5 Ways to Increase Image Size in KB

Emanuel Pires
Emanuel Pires Originally published Feb 21, 25, updated Feb 21, 25

Increasing the size of a photo in KB (kilobytes) is often necessary for various purposes, such as uploading images to websites, social media, or preparing them for print. However, enlarging an image file size can sometimes compromise its quality, leading to pixelation or distortion. Fortunately, with the right techniques and tools, you can increase your photo size while preserving its sharpness and detail. In this guide, we’ll walk you through the most effective methods to increase your photo size in KB without sacrificing quality, ensuring that your images look their best no matter the use.

In this article
  1. Part 1: KB vs. MB: Explaining the Main Differences
  2. Part 2: Method 1: Increase Photo Size in KB with AI-Powered Upscaling Tools
  3. Part 3: Method 2. Increase Image KB Size with Paint on Windows
  4. Part 4: Method 3. Increase Image Size in KB with Preview on Mac
  5. Conclusion
  6. FAQs

Part 1: KB vs. MB: Explaining the Main Differences

When working with image files, it's essential to understand the difference between KB (Kilobytes) and MB (Megabytes), as both units measure file size but represent different scales.

Kilobyte (KB): A kilobyte is a unit of data that equals 1,024 bytes. In image files, a size in KB typically indicates a smaller file. Images with low resolution or heavy compression are usually measured in KB. These smaller files load faster and take up less storage space but may suffer from reduced image quality.

Megabyte (MB): A megabyte equals 1,024 kilobytes, or 1,048,576 bytes. Images in MB tend to be higher in resolution and quality. A larger file size allows for more detail, making it suitable for printing and high-quality presentations. However, larger file sizes may also lead to slower loading times and greater storage usage.

Part 2: Method 1: Increase Photo Size in KB with AI-Powered Upscaling Tools

AI-powered upscaling tools offer a smart way to increase the size of an image without compromising quality. By intelligently enhancing details and reducing pixelation, these tools make it easy to boost your image resolution while maintaining its sharpness. Here are three top AI-powered tools to help you increase photo size in KB:

1. UniConverter Image Enhancer

UniConverter Image Enhancer is a powerful AI-based tool designed to upscale image resolution while preserving its quality. It allows users to enlarge photos up to 8x the original size with minimal loss in sharpness and detail. This tool is perfect for those who need high-quality upscaling for images destined for print, web, or social media.

uniconverter video converter

Best Image Enhancer

Seamlessly and Swiftly Enhance Your Favorite Image in Exceptional Quality

Key Features:

  • AI-Powered Upscaling: Automatically enhances image resolution using AI algorithms, ensuring no loss of quality.
  • Noise Reduction & Detail Enhancement: Effectively removes graininess and sharpens fine details for a smoother finish.
  • Batch Processing: Supports batch processing to upscale multiple images at once, saving time.
  • One-Click Enhancement: Simple interface allowing quick, one-click upscaling, even for beginners.
Pros
  • User-Friendly Interface: Designed with a straightforward interface, making it accessible for all skill levels.
  • Cross-Platform Compatibility: Available for both Windows and Mac users, ensuring a smooth experience across different operating systems.
  • Offline Functionality: No need for an internet connection, offering greater privacy and faster processing.
Cons
  • Paid Subscription Required for Full Access: Many advanced features, including batch processing, are only available in the paid version.
  • Limited Customization: The tool focuses on automatic upscaling, which may not provide detailed manual editing options for users who need more control.

Step by Step Guide to Increase Photo Size Using UniConverter Image Enhancer

Step 1: Launch Wondershare UniConverter and select AI Image Enhancer

Install and open Wondershare UniConverter on your device. From the homepage, locate the "Hot" tab and select "AI Image Enhancer" to access the upscaling tool and enhance your photos with AI precision.

launch wondershare uniconverter

Step 2: Add Files to AI Image Enhancer

To upload an image, drag and drop it into the AI Image Enhancer or click the “+” button to browse and select files. Make sure the image is in a supported format (JPG, PNG, JPEG, BMP) and falls within the resolution range of 200x200 to 6000x6000 pixels. You can also upload multiple images simultaneously for quick and efficient batch processing.

add file to the interface

Step 3: Select AI Model and export

With a side-by-side preview, the tool shows your original image on the left and the enhanced version on the right. It offers six AI enhancement options, including Auto Enhancer for better clarity, Image Upscaler to boost resolution, and Old Photo Colorizer to add natural colors. The Old Photo Restorer both colorizes and fixes damaged images, while Face Enhancer sharpens facial details. Color Correction adjusts saturation for more vibrant colors. Once satisfied, click "Preview" to apply the enhancements and "Export" to download the improved image.

auto enhance and preview

2.AIEASE

AIEASE is an innovative AI tool designed to help users increase their image size while retaining sharpness and clarity. It focuses on enhancing resolution and providing high-quality enlargements, making it a great choice for photographers, graphic designers, and anyone needing detailed upscaling for digital assets.

increase image size in kb with aiease

Key Features:

  • AI-Based Image Enhancement: Uses deep learning algorithms to enhance images without sacrificing resolution or clarity.
  • Customizable Upscaling Options: Allows users to set the desired image size and resolution based on their needs.
  • Noise Reduction: Removes unwanted noise and grain from low-resolution images, improving visual clarity.
  • Batch Processing: Enables users to process multiple images at once, making it ideal for bulk image enhancements.
Pros
  • High-Quality Results: Ensures that upscaled images maintain sharpness and detail, even after significant enlargement.
  • Easy-to-Use Interface: Offers an intuitive interface, allowing even beginners to use the tool effectively.
  • Fast Processing: Quickly enhances images, making it suitable for users who need fast results.
Cons
  • Free Trial Limitations: The free version provides limited upscaling options and may not meet the needs of users who require larger files.
  • No Offline Functionality: Requires an internet connection for image processing, which can be a drawback for users looking for offline solutions.

Steps to Increase Photo Size Using AIEASE

Step 1: Open AIEASE and Upload Your Image:

Launch AIEASE and click on the Upload button to select the image you wish to enhance. You can easily upload images from your device, ensuring compatibility with various formats such as JPG, PNG, and TIFF.

Step 2: Select Desired Image Size and Resolution:

Once your image is uploaded, choose the desired output size and resolution. You can manually adjust the enlargement settings to scale your image by a specific percentage or set custom dimensions based on your needs.

Step 3: Apply Enhancements and Preview:

After selecting your preferred settings, click on Enhance to begin the AI-powered upscaling process. Preview the image to ensure the enlargement meets your expectations, checking for any loss of quality.

Step 4: Download the Upscaled Image:

Once you're satisfied with the enhanced image, click Download to save it to your device. The enlarged image will be ready for use without compromising clarity or sharpness.

3. Img2Go

Img2Go is a versatile online image enhancement tool that allows users to upscale images with ease. With its advanced algorithms and straightforward interface, Img2Go enables users to enlarge images without losing quality, making it perfect for personal and professional use.

increase image size in kb with img2go

Key Features:

  • AI-Driven Upscaling: Automatically increases image resolution using artificial intelligence, ensuring high-quality results.
  • Support for Multiple Formats: Works with a wide range of image formats, including JPG, PNG, BMP, and TIFF.
  • Noise Reduction: Removes image noise and graininess, giving images a cleaner, more refined look.
  • Online Accessibility: As an online tool, Img2Go doesn't require any installation, making it convenient for quick use.
Pros
  • Free and Easy to Use: Offers a free version with basic upscaling features that are perfect for casual users.
  • No Installation Required: Being an online tool, there’s no need to install any software, making it accessible from any device with internet access.
  • Multi-Functionality: Beyond upscaling, Img2Go also offers tools for converting, editing, and compressing images.
Cons
  • Internet Dependency: Requires a stable internet connection for processing images, which could be a limitation for some users.
  • Limited Features in Free Version: The free version is limited in terms of image size and upscaling quality, with premium features available only via subscription.

Steps to Increase Photo Size Using Img2go

Step 1: Visit the Img2Go Website:

Go to the Img2Go website and select the Resize Image tool from the available options. The tool can be accessed directly from your browser, so there's no need to download any software.

Step 2: Upload Your Image:

Click on the Choose File button to upload the image you want to resize. Img2Go supports various image formats like JPG, PNG, and TIFF, making it easy to work with your preferred file type.

Step 3: Set the New Image Size:

Once the image is uploaded, you can adjust the size by either setting specific dimensions or enlarging the image by a percentage. You can also choose the image quality and resolution settings to maintain clarity during resizing.

Step 4: Preview and Download:

After resizing, preview the enlarged image to ensure the quality is preserved. If you're satisfied, click the Start button to apply the changes and then download the upscaled image directly to your device.

Part 3: Method 2. Increase Image KB Size with Paint on Windows

If you're a Windows user, Microsoft Paint offers a simple and free way to resize images. It comes pre-installed on most Windows systems, and with this tool, you can easily adjust your image's dimensions, which will automatically update the file size. One of the benefits of using Paint is that it lets you view the updated photo size in real time, allowing for a more controlled resizing experience.

Here’s how you can increase the KB size of an image using Microsoft Paint:

Step 1: Open the Image in Microsoft Paint:

Locate the image you want to resize on your computer, right-click on it, and select the Edit option from the menu. This will open the image in Microsoft Paint, where you can make adjustments to its dimensions.

increase image size in kb with microsoft paint

Step 2: Adjust the Image Dimensions

In the top toolbar, navigate to the Image section and click on the Resize option. From here, you can adjust the image size by either percentage or pixels, depending on how much you want to enlarge the photo. Increase the dimensions to make the photo bigger, and you’ll see the size change accordingly.

adjust image dimension

Step 3: Save the Resized Image

After adjusting the dimensions, click the OK button to apply the changes. Then, press Ctrl+S to save the resized image. The new file size will automatically update in the status bar, reflecting the increased KB size.

save and resize image

Part 4: Method 3. Increase Image Size in KB with Preview on Mac

If you're using macOS, the Preview app offers an easy way to increase the KB size of images. Although it's primarily an image and PDF viewer, Preview also has built-in tools for resizing images, allowing you to adjust the photo's dimensions and file size.

Here’s how you can use Preview to increase an image's size in KB:

Step 1: Open the Image in Preview

Locate the image you want to resize and double-click it to open it directly in the Preview app. Once the image is open, go to the Tools menu at the top and select Adjust Size to begin resizing the image.

open image in preview

Step 2: Adjust the Resolution and Dimensions

In the Adjust Size window, navigate to the Fit Into option and select the desired resolution to change the image’s file size. Alternatively, you can manually adjust the width and height to your preferred dimensions, ensuring the image is resized to the required size.

adjust resolution and dimension

Step 3: Save the Resized Image

Once you're satisfied with the resulting size, click the OK button to apply the changes. Then, go to File > Save to save the resized image with the updated file size.

save and resize image

Conclusion

Increasing the KB size of an image can be easily achieved using various tools, whether you're on Windows or macOS. From simple options like Microsoft Paint and Preview to more advanced AI-powered upscaling tools, there are plenty of methods available to help you resize your images without losing quality. UniConverter's Image Enhancer also provides a seamless and efficient way to upscale images while preserving their clarity. Additionally, UniConverter video compressor emerges as a versatile solution for anyone needing to work with both image and media files. By adjusting the image dimensions, resolution, and file format, you can achieve the desired file size while ensuring the image remains sharp and clear. With the right tool and a few simple steps, you can effortlessly enhance your images for different purposes like printing, web use, or social media.

FAQs

1. How can I increase the KB size of an image without losing quality?

You can use tools like UniConverter Image Enhancer, which utilizes AI technology to upscale images while maintaining their sharpness and clarity. By adjusting the image’s resolution and dimensions, you can increase the file size without significant quality loss.

2. Does UniConverter Image Enhancer support batch processing?

Yes, UniConverter Image Enhancer supports batch processing, allowing you to resize multiple images at once. This feature is especially useful for photographers, designers, and content creators who need to resize a large collection of images quickly and efficiently.

3. What tools can I use to increase an image's KB size on Windows?

On Windows, you can use Microsoft Paint or UniConverter Image Enhancer. Paint allows you to resize the image manually, while UniConverter uses AI to automatically enhance the image for better quality and larger file size without manual adjustments.

4. Can I use UniConverter Image Enhancer on both Windows and Mac?

Yes, UniConverter Image Enhancer is available for both Windows and Mac users, offering seamless performance across different operating systems. This makes it easy to enhance images regardless of your platform.

5. How does the resolution affect the KB size of an image?

Increasing the resolution of an image generally increases the file size in KB. Tools like UniConverter Image Enhancer adjust the image's resolution intelligently, ensuring that the image retains its quality and the file size increases as needed without introducing pixelation.

Emanuel Pires
Emanuel Pires Feb 21, 25
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