Smooth resizing or pixel-art enlargement
Smooth interpolation blends neighboring pixels to soften stair-step edges. Nearest-neighbor scaling repeats each source pixel in an integer-sized block, keeping pixel-art colors and hard edges intact. Choose 2×, 3×, 4× or 8×.
What larger dimensions actually mean
Neither option invents new objects or runs an AI model. A larger photo may still look soft because resizing cannot recover missing detail. For pixel artwork, nearest neighbor is useful precisely because it preserves the original grid.
Local processing and transparent PNG export
JPG, PNG and WebP files up to 25 MB are accepted. Output is PNG, retaining existing transparent areas. The output limit is 8192 pixels per side and 40 megapixels; your browser may need a smaller image if memory is limited. There are no credits or account requirements for this tool.
Frequently asked questions
Does this use an AI model?
No. Both modes use browser image resampling. No image is uploaded for resizing. Optional phone transfers use temporary encrypted storage.
Does 8× add eight times the detail?
No. It multiplies each side by eight, producing 64 times as many pixels, but adds no recovered detail.
Which mode should I use for pixel art?
Use nearest neighbor and an integer scale to repeat the original pixels without blending their colors.