Image Upscaler

Free, private, runs in your browser.

What is Image Upscaler?

Image Upscaler is a free online tool that enlarges a small image to 2×, 3× or 4× its size and sharpens the result so it stays crisp. It runs in your browser with JavaScript and the canvas API, so your photos are never uploaded to a server and there is no sign-up, watermark or daily limit. It belongs to our Resize collection of 95 image tools.

Available options: Upscale factor, Sharpness, Noise smoothing. Quick presets include ×2, ×3, ×4, Soft, Crisp, Clean JPG.

How to use Image Upscaler

  1. Open Image Upscaler and drop, paste (Ctrl+V) or select your image.
  2. Adjust the options and watch the live preview.
  3. Hold the original button or use the before/after slider to compare.
  4. Press Apply to keep the change. Undo and redo are always available.
  5. Choose PNG, JPG, WEBP, AVIF or ICO, then download, copy or share the result.

Benefits

  • Private: files stay on your device
  • Fast: results appear instantly as you change settings
  • Free: no account, watermark or limits
  • Flexible: batch ZIP download for many files at once
  • Works on mobile, tablet and desktop

Features

Live preview, zoom and pan, before and after comparison, fullscreen view, undo and redo, copy to clipboard, share, keyboard shortcuts (Ctrl+Z, Ctrl+Y, Ctrl+S, Ctrl+V) and a download history.

When to use Image Upscaler

Typical uses include enlarging small photos for print, sharpening low-resolution logos and screenshots, preparing profile pictures and meeting minimum-size upload rules. Start with 2× and raise Sharpness a little. Use Noise smoothing for compressed JPG files. Upscaling cannot invent real detail, so very large enlargements always look softer than a photo taken at that size.

Image Upscaler FAQ

Is Image Upscaler free?

Yes. Image Upscaler on Imagine Tool is free, with no sign-up, no watermark and no daily limit.

Are my images uploaded to a server?

No. Image Upscaler runs entirely in your browser, so your images never leave your device.

Which image formats does Image Upscaler support?

Any image your browser can open, including JPG, PNG, WEBP and GIF, and often AVIF. You can export PNG, JPG, WEBP, AVIF or ICO.

How big can I upscale an image?

Up to 4×. Very large results are limited to about 25 megapixels and 8192 pixels on the longest side so your browser stays responsive. Enlarging uses smooth interpolation plus sharpening, so it looks cleaner than a plain stretch but cannot add detail that was never captured.

Does Image Upscaler work on mobile?

Yes. The page is fully responsive and works on phones, tablets and desktops.

Related tools

Browse all: Image Convert · Image Edit · Compress · Resize · Crop · Rotate · Flip · Enhance · AI Tools · Watermark · Social Media · GIF · Collage · Color · Metadata