Image Upscaler
Scale an image up 2×–4× with browser bicubic and optional unsharp mask.
How to Use
- Drop image.
- Pick factor and sharpening level.
- Download larger image.
Notes
About the Image Upscaler
Meet the Image Upscaler: a free, no-fuss tool for image, audio and file tasks with nothing to install and no sign-up. Scale an image up 2×–4× with browser bicubic and optional unsharp mask.
How it works
Type in what you have, and the answer shows up right away. Change anything and it updates by itself. Everything runs in your browser, so it is fast and nothing you type is sent away.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
AI upscaling?
This is bicubic + optional unsharp. For neural super-resolution you need a dedicated model.
How do I use the Image Upscaler?
Just type your numbers. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Do I need to install or sign up for anything?
Not at all — it runs in the browser with nothing to install and no account. After it loads once, it even works without an internet connection.
Is my information private?
Yes. Everything happens in your browser. Nothing you type is sent to a server or saved anywhere.
Common Use Cases
Print prep
Gentle upscale from web-size source.
Retina
Quick 2× for HiDPI.
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