Upscale Image
Enlarge your images 2×, 3×, or 4× with high-quality Lanczos interpolation. Free & private.
Drop your image here
or click to browse · PNG, JPG, WebP supportedHow to Upscale an Image Online
- Drag and drop your PNG, JPG or WebP file into the upload area, or click it to browse your device.
- Choose 2x, 3x or 4x to set how much larger the output image should be.
- Click Upscale & Download. The tool uses high-quality Lanczos-style interpolation with mild sharpening to enlarge the image while minimizing blur.
- The upscaled PNG downloads automatically once processing finishes.
Frequently Asked Questions
How much can I upscale an image without losing quality?
2x and 3x upscales generally hold up well using the Lanczos-style interpolation this tool applies. 4x is the maximum offered here since pushing further starts to visibly soften fine detail.
What is Lanczos interpolation and why does it matter?
Lanczos is a resampling algorithm that estimates new pixels using a wider, smoother sampling window than basic bilinear scaling, which keeps edges sharper and reduces blur when enlarging an image.
Why does my upscaled image still look slightly soft?
Upscaling can only estimate new pixel detail from what already exists in the original — it can't invent information that was never captured. Starting from a higher-resolution or less compressed original will always give a sharper upscale.
Is upscaling the same as zooming in?
No. Zooming in just displays the same pixels larger on screen, which makes them blocky. Upscaling generates new pixel data to fill in a larger canvas, producing a smoother result.
Is my image uploaded to a server to be upscaled?
No. Upscaling runs entirely in your browser using the Pica.js resizing library (with a Canvas-based fallback) — your image never leaves your device.