TinySandyFree Online Tools

Image Upscaler

Make a small picture two, three or four times larger for printing, a slide or a bigger screen. Smooth mode uses high-quality interpolation with an optional sharpening pass, while nearest-neighbour mode keeps pixel art and icons crisp with hard edges. Everything runs on your device, and the page is clear about what interpolation can and cannot do.

Image Editing Runs in your browser

Enlarge Your Image

This upscaler uses classic interpolation in your browser. It makes the picture bigger and smooth, but it does not invent new detail the way AI upscalers do.

Drag and drop your image (JPG, PNG, WebP, GIF or BMP) here, or click to browseAccepted: JPG, JPEG, PNG, WEBP, GIF, BMP, AVIF. Up to 25 MB.
Enlarge by
Counteracts the softness of smooth enlargement. Not used for pixel art.
Used for JPEG and WebP. Higher means a larger file.
Fills transparent areas when the result is saved as JPEG.

How to Use the Image Upscaler

  1. Add the picture you want to enlarge.
  2. Choose 2×, 3× or 4× and the method that suits the picture.
  3. Adjust the sharpening if the smooth result looks soft.
  4. Press Upscale, inspect the detail preview and download the enlarged file.

About This Tool

People who need a larger copy of a logo, icon, screenshot, game sprite or small photo, and who prefer a predictable, private enlargement over an AI service.

Input: JPG / PNG / WebP / GIF / BMP  ·  Output: PNG / JPG / WebP.

Features and Limitations

Features

  • 2×, 3× and 4× enlargement with exact pixel dimensions.
  • Smooth mode with step-wise high-quality interpolation plus adjustable unsharp-mask sharpening.
  • Nearest-neighbour mode for pixel art, keeping every pixel a crisp square.
  • Shows the new size and megapixels before you download.

Limitations

  • No AI or machine learning: the tool cannot recreate missing detail such as eyelashes, text that is already blurred, or fabric texture.
  • The result is limited to 16,384 px per side and 100 megapixels, so very large pictures cannot be enlarged 4×.
  • Sharpening also amplifies JPEG noise and blocky compression artefacts.
  • Processing happens on your device, so very large files depend on your browser's available memory.

Example

A 640 × 480 px photo at 3× becomes 1920 × 1440 px (2.76 megapixels); a 32 × 32 px sprite at 4× with nearest neighbour becomes a crisp 128 × 128 px sprite.

Frequently Asked Questions

Will this make a blurry photo sharp?

Only a little. Interpolation spreads existing pixels over a larger area and sharpening boosts edges, but detail that was never captured cannot be recovered. AI upscalers guess new detail; this tool deliberately does not.

Which method should I use?

Use Smooth for photos, paintings and gradients. Use Nearest neighbour for pixel art, small icons and screenshots where you want hard, square pixels instead of blur.

Why is the enlarged file so much bigger?

A 2× enlargement has four times as many pixels, and 4× has sixteen times as many. Choose JPEG or WebP if the file size matters.

Is there a size limit?

Source files up to 25 MB are accepted, and the result may be at most 16,384 pixels per side and 100 megapixels, which is what browsers can reliably handle.

Related Tools

More like this: all Image Editing tools, all Image & Design tools or the TinySandy home page.