Image Enlarger
Upscale low-resolution JPG, PNG, and WebP photos by 2x, 3x, or 4x with bicubic sub-pixel smoothing.
Your files are processed directly inside your browser memory using local hardware acceleration. No images, videos, or documents are ever uploaded to cloud servers or stored anywhere.
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Supports .jpg, .jpeg, .png, .webp. 100% processed on your device.
Why Use Our Image Enlarger?
Bicubic Sub-Pixel Smoothing
Calculates smooth color gradients between pixels to prevent jagged pixel blocks.
How to Use Image Enlarger Online for Free
Upload your small photo.
Select scale factor (2x, 3x, or 4x).
Download your enlarged high-resolution image.
Frequently Asked Questions
How does bicubic interpolation work?
Instead of duplicating pixels (nearest neighbor), bicubic interpolation calculates weighted averages of 16 surrounding pixels for smoother edge transitions.
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