Upscale Image 2x or 4x Online — Free & Private
Enlarge images with smart sharpening, right in your browser. Great for prints and slides.
Drop an image here or click to choose
processed on your device — never uploaded
Sometimes the only copy you have is too small: a logo pulled from an old email, a photo that must fill a slide, a picture that has to be printed larger than it was shot. This tool enlarges it 2 or 4 times and sharpens the result so edges stay defined.
It is worth being precise about what that means. The enlargement is done in several high-quality steps followed by sharpening. It is careful resampling, not an AI that invents detail. It makes a small image usable at a larger size with clean edges; it cannot recover a face that was four pixels wide. Graphics, screenshots and reasonably sharp photos benefit most.
The output is capped at 8000 pixels on the longest side, because beyond that a browser can run out of memory, especially on a phone. The work is done on your device and the image is never uploaded.
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Frequently asked questions
- How does the upscaling work?
- The image is enlarged in several high-quality steps and then sharpened so edges stay crisp. It is classic resampling, not an AI model: it will not invent detail that was never in the photo.
- What's the maximum size?
- Up to 8000px on the longest side, to keep your device's memory safe.
- Should I choose 2x or 4x?
- Use the smallest factor that reaches the size you need. 2x keeps the image looking most natural; 4x is for very small originals.
- Will it fix a blurry photo?
- It sharpens edges, which helps mild softness. A photo that is out of focus or motion-blurred stays blurred at a larger size.
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🔒 Your files are processed on your device. This tool runs entirely in your browser — nothing is uploaded.