Resize Image Without Losing Quality

When shrinking, almost: a good resizer merges pixels and you rarely see a difference. When enlarging, a smoothing resize such as bicubic softens edges because it averages existing pixels, and nearest neighbor keeps hard blocks that look jagged on photos. An AI upscaler like this one predicts sharp edges instead, but it can't recover detail that was never in the file.

Because the resizer has to create pixels that don't exist, and it does that by blending the colors around them. Every hard edge becomes a small gradient, and at two or four times the size those gradients read as blur.

No. This page only enlarges, to 2x, 4x or 4K. If your image is already bigger than the 4K target it tells you rather than shrinking it. For smaller images use any normal image resizer; shrinking with bicubic or Lanczos keeps photos looking sharp.

No. DPI only tells a printer how densely to place the pixels; changing it adds no pixels and no detail. To print larger and still sharp you need more pixels, which is what upscaling gives you. To write a DPI value into the file, use the DPI converter page.

Close, but not identical. The model sharpens edges and removes noise and compression blocks, and the extra detail is its own guess. In our tests skin came out smoother and very small text could change shape, so drag the slider over faces and lettering before you use it.

Not directly: the outputs are 2x, 4x and 4K, always at the original aspect ratio. Enlarge here first so there are enough sharp pixels, then crop or shrink to the exact size in a normal editor. Scaling down after an AI upscale usually stays sharp.

Guides often advise a sharpening pass after a normal enlargement. The AI result is already sharpened by the model, so open the download at 100% zoom first and add more only if it still looks soft to you.

If you have the logo as a vector file (SVG, AI or EPS), use that: vectors scale to any size with no loss at all. For a photo or screenshot of text, this tool can make it larger and cleaner, but check every letter, since small, blurry text can be redrawn wrong.

It is free, with no sign-up, no daily limit and no watermark. Your image is upscaled on your own device and is never uploaded to our servers; the AI model runs in your browser.

JPG, PNG and WebP up to 20 MB; HEIC isn't supported. Results over about 50 megapixels on a computer, or about 16.7 megapixels on an iPhone or iPad, are refused, so 4K fits both. A transparent PNG keeps its transparency unless you save as JPG.

Usually a few seconds on a regular laptop. The first run also downloads a 2.4 MB model and a runtime of about 28 MB, which your browser then caches.