Make a small image bigger without the mush
Drop in a photo, pick 2x, 3x, or 4x, and download a larger version that actually holds together. The server enlarges your image with Lanczos resampling, then runs a sharpen pass to firm up the edges. That combination matters. A browser stretching a 400px image to 1600px just smears each pixel into a blurry grid. This doesn’t.
Here’s the honest part up front: it’s resampling, not magic. There’s no model inventing faces, textures, or text that wasn’t captured. It can’t pull a license plate out of a 12px smudge. What it does is enlarge cleanly and sharpen intelligently, so a decent small image becomes a usable bigger one instead of a soft mess.
Lanczos plus sharpen, in plain terms
Lanczos is a resampling filter that looks at a wider neighborhood of surrounding pixels when it calculates each new one. Compared to nearest-neighbor (blocky) or bilinear (mushy), it keeps far more edge definition during the enlargement. Photographers and image libraries have leaned on it for years for exactly this reason.
The sharpen pass afterward counteracts the slight softness any upscale introduces. Edges get a little contrast boost, fine detail comes back into focus, and the result reads as crisp rather than inflated.
What it won’t do is recover information that was never there. If the original is a tiny, blurry, heavily-compressed thumbnail, you’ll get a bigger version of that same blur. Garbage in, larger garbage out. Start with the best-quality original you have and the results are genuinely good.
Where this comes in handy
You found the perfect product shot, but it’s 500px wide and your hero banner needs 1200. Run it through at 3x and you’ve got room to crop.
Old avatars and logos that look fine at thumbnail size fall apart the moment you place them larger. A 2x pass with sharpening usually buys you the headroom you need.
If your image is already big enough and you just want a different pixel size, the Image Resizer is the better fit. Need it sharper but not larger? Try Image Sharpen. And once you’ve upscaled, the file gets heavier, so running it through the Image Compressor afterward keeps the download reasonable.
How to use it
- Upload an image (JPG, PNG, or WebP) by dropping it on the box or clicking to browse.
- Check the original dimensions shown next to the file.
- Pick your scale: 2x, 3x, or 4x. The new size previews live.
- Hit Upscale, wait a couple seconds, then download.
One cap worth knowing: the longest side of the output maxes out at 6000px. So a 2000px-wide image at 4x lands at 6000, not 8000. Plenty for almost any web or print-at-small-size use.
Your upload is processed on the server and automatically deleted after about an hour. Nothing sticks around.
Common questions
Does this use AI to add detail?
Nope. It’s high-quality Lanczos resampling with a sharpen pass, not a generative model. It enlarges and sharpens what’s already in your image, it doesn’t hallucinate new detail that was never captured.
Will a blurry photo come out sharp?
Not really. Upscaling can’t undo blur or focus problems. It’ll make a larger, slightly sharpened version, but a fundamentally soft source stays soft. Start with the clearest original you have.
Which scale should I pick?
Start with 2x. It’s the safest and usually looks best. Go to 3x or 4x when you genuinely need the extra pixels and know the result will get softer the higher you push.
What’s the biggest image I can get out?
The longest side is capped at 6000px. If your scale would exceed that, the output is held at 6000 on the long edge with the aspect ratio preserved.
Is my image kept anywhere?
It’s uploaded for processing and auto-deleted after roughly an hour. We don’t store your files long-term or use them for anything else.
What formats work?
JPG, PNG, and WebP all work, and you get the same format back. Transparency on PNGs is preserved through the upscale.