Increase Image Size in KB Online
Increase your image file sizes to specific KB or MB targets
Default Target Size
Increase your image to a specific file size
Many online platforms, print services, and design specifications require minimum file sizes for images. Some platforms reject images that are "too small" or require specific KB/MB thresholds for quality assurance. Fortunately, with our free image size increaser, you can easily upsize images to meet any requirement. ReduceImagesOnline makes it simple to increase an image to a specific size in KB or MB, whether you want to enlarge JPG, PNG, or GIF files to 500 KB, 2 MB, or any custom size. Get your images up to the perfect file size in just seconds!
How Size Increase Works
Upload Images
Upload your images and set target file sizes in KB or MB
Smart Upscaling
Our algorithm maximizes quality and dimensions to reach your target size
Download Results
Get your increased images at the exact file sizes you need
Resize to popular sizes in KB or MB
Need to reduce file size instead?
Key Features of Increase Image Size
Precise Target Sizes
Set exact KB or MB targets and get images that meet platform-specific file size requirements.
Maximum Quality Export
Images are exported at maximum quality settings to preserve all visual details while increasing file size.
Smart Dimension Scaling
Automatically upscales image dimensions proportionally when needed to reach target file sizes.
Batch Processing
Upload and increase multiple images at once with consistent target sizes for efficient workflow.
100% Private & Secure
All processing happens in your browser. Your images never leave your device, ensuring complete privacy.
Multiple Format Support
Works with JPG, PNG, WebP, GIF, and BMP formats. Export in your preferred image format.
When to Increase Image File Size
Platform Minimum Requirements
Some platforms reject images below specific file sizes. Print services, stock photo sites, and professional portfolios often require minimum KB/MB thresholds for quality assurance.
Print Quality Standards
Professional printing services need high-quality images with sufficient file sizes to ensure crisp, clear prints. Undersized files may be rejected or produce poor quality prints.
Design Specifications
Graphic design projects, marketing materials, and brand guidelines often specify exact file size ranges. Meeting these specs ensures consistency across all materials.
Archive & Preservation
When archiving important images, you may want to increase file size to maximum quality settings to preserve all details for future use and prevent quality degradation over time.