Upscale Image
Enlarge a picture by a chosen factor with a proper resampler (Lanczos for photos, nearest neighbour for pixel art) and a touch of sharpening, no AI, no upload.
or browse filesdrop an image here or paste
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Enlarge a picture by a chosen factor with a proper resampler (Lanczos for photos, nearest neighbour for pixel art) and a touch of sharpening, no AI, no upload.
or browse filesdrop an image here or paste
This upscaler enlarges a picture by a factor you choose - 1.5x, 2x, 3x or 4x - with a proper resampler and nothing invented. Pick a photo and it is enlarged 2x at once; the preview on the stage is the real resample at the size shown, not a stretched thumbnail, so the sharpen slider shows what the file will look like. Smooth is a Lanczos3 filter, the resampler print and video software use for enlargement, which keeps edges clean and gradients smooth. Pixel art is nearest neighbour, which copies each pixel into a solid block so sprites, icons and screenshots stay crisp instead of going blurry. Sharpen is an unsharp mask on the result that gives back the crispness interpolation smooths away. No model guesses at detail, so the enlarged picture is faithful to the original - that is the point of an upscaler without AI.
The factor multiplies both sides: a 1200 by 800 photo at 2x is 2400 by 1600, and 4x is 4800 by 3200. The stage info card shows the result size in pixels and megapixels before you download; very large results are capped at 64 megapixels and the card says so. The export runs in bands with the page kept responsive, so a 12 megapixel photo at 2x, which is 48 megapixels, takes a few seconds and shows a spinner rather than freezing. Upscaling a photo for print usually wants 1.5x or 2x with a little sharpening; going bigger than 2x is where interpolation starts to look soft, which no setting here will hide.
A photo that came in as JPG saves as JPG by default; choose PNG for a lossless copy of the enlarged pixels or WebP for the smallest file. Transparent PNGs keep their transparency in PNG and WebP. The pencil next to the file name renames the download, the copy button puts the enlarged picture on the clipboard, and on a phone the share button sends it to another app.
The photo is decoded in your browser, the resampling and sharpening run on your own processor, and the file is assembled on the device. Nothing is uploaded, no account is needed and no server keeps a copy, which also means there is no queue and no watermark.
It increases the pixel count, not the detail. A good resampler keeps what the photo has - clean edges, smooth tones - while making it bigger, and a little sharpening restores the crispness that interpolation softens. It cannot add detail the original never captured; tools that do are generating it with a model, and this page deliberately does not.
Smooth for photographs, scans and anything with gradients; it is the Lanczos3 filter. Pixel art for sprites, pixel graphics, small icons and screenshots of text, where every source pixel should become a sharp square and blurring would ruin it. If unsure, try both and look at an edge in the preview.
The default of 30 percent suits most photos at 2x. Raise it for a soft original or a bigger factor, lower it or switch it off for smooth subjects like skin and sky, where sharpening exaggerates noise. Pixel art rarely needs any.
No. The photo stays in your browser from the moment you pick it to the moment you save the enlarged copy. Nothing is transferred, stored or seen by anyone else.