What is it?
The AI Image Upscaler enlarges a picture 2× or 4× and uses an AI model (ESRGAN) to draw in sharp detail, instead of the blur you get from simple stretching. It runs in your browser using your device’s graphics chip.
Who is it for?
Shopkeepers with small logos for banners, people printing old phone photos bigger, students enlarging diagrams, sellers improving small product photos, and anyone whose picture is “too small” for a form or print.
How to use it
- Choose a photo (JPG, PNG or WebP).
- Pick Make it 2× or 4× bigger, and the Method: AI or Quick (a fast sharpen without AI).
- Tap Upscale. The first time you’ll see Loading the AI model (about 2 MB, only the first time)…, then Upscaling…. Compare the Preview and download.
Good uses and limits
Upscaling works best on logos, text screenshots, drawings and slightly small photos. It can’t recover detail that was never there: a tiny, very blurry face will become larger and smoother, not truly sharp.
Try a sample upscales a small logo so you can compare it with the original.
Is my file uploaded?
No. The file is opened and changed inside your browser, on your own phone or computer. Nothing is sent to us, and closing the page clears it.
Errors and how to fix them
- “The AI could not run on this device (…). Using Quick mode instead”: the browser has no WebGL graphics support, or it is switched off. Try Chrome or Edge, or a different device.
- “… could not be opened. Try a JPG, PNG or WebP”: convert the image first.
- It is slow: big pictures are processed in small tiles. Large inputs are limited (about 1600 px for 2×, 900 px for 4×) so phones don’t run out of memory; crop to the part you need first.
- Faces look painted: AI invents detail. Use 2× instead of 4× for portraits.
Open the tool: AI Image Upscaler
Still stuck?
Contact support. Tell us which tool or page you were using, what you tapped, what you saw, and your phone or computer and browser (for example: Android phone, Chrome). We reply by email.
Questions, or an error not listed here?
Tell us in the comments: what you were doing, the exact message you saw, and your device and browser. We read every comment and add new fixes to this article.