- Private: files never leave your device
- Free, no sign-up
- Fast, works offline once loaded
How to use Image Upscaler
- Drop your small picture into the box.
- Choose 2x, 3x or 4x and adjust the sharpening and edge smoothing.
- Download the picture, or all of them as a ZIP.
About this tool
Make low-resolution pictures bigger for printing or large screens. The upscaler resamples in several high-quality steps, smooths jagged edges and sharpens the result. It cannot add detail that was never captured, so very small pictures will still look soft at large sizes.
Enlarge by the smallest factor you need. Very large results are limited to protect your browser.
Frequently asked questions
How do I make a small image bigger without blur?
Use 2x, keep sharpening around 80% and smooth edges lightly.
How big can I enlarge?
Up to 4x, with a total limit of about 100 megapixels.
Is this AI upscaling?
No. It uses high-quality resampling plus sharpening, which is fast and private.
Is Image Upscaler really free?
Yes. You can use Image Upscaler as often as you like with no sign-up, no watermark and no daily limit.
Are my images uploaded to a server?
No. Image Upscaler runs entirely in your web browser, so your files stay on your own device and are never sent to DEWANARO or anyone else.