Image Upscaler
Enlarge images while maintaining smooth edges using browser-based interpolation. Not AI super-resolution — an honest, free upscaling tool.
Upscale Image
Upload an image, choose scale, and download the result
Original: 0 x 0
Upscale Factor
How It Works
1. Upload Image
Select a JPG, PNG, or WebP image from your device. The image stays local.
2. Choose Scale
Pick 2x, 3x, 4x or set custom dimensions. Active sharpness enhancement applied.
3. Download
Preview the result in a side-by-side comparison, then download the upscaled image.
Frequently Asked Questions
How does browser-based upscaling work?
Browser-based upscaling uses the HTML5 Canvas API to draw the image at a larger size with bicubic interpolation smoothing. This is not AI super-resolution — it interpolates existing pixels, so fine details cannot be magically created.
What is the maximum upscale factor?
You can upscale by 2x, 3x, or 4x presets, or enter custom width and height values up to 8192 pixels.
Does upscaling reduce image quality?
Upscaling enlarges the pixel grid and fills in gaps with interpolated color values. The image will appear larger but sharpness and detail are limited by the original resolution. Very large upscales will look blurry.
Is this AI super-resolution?
No. This tool uses standard canvas interpolation, not AI or machine learning. For AI upscaling, dedicated desktop software is recommended. This tool is useful for quick enlargements where perfect detail is not required.
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