# Image Upscaler — Enlarge to Any Size

> Drop an image, see its current size auto-detected, set your target width, height or file size and enlarge.

Drop an image and the tool auto-detects its width, height and file size, pre-filling the targets at 2× the original. Edit the target width, height or file size to upscale. If the result at target dimensions is still smaller than your file-size target, the tool scales further automatically. Interpolation ranges from smooth for photos to nearest-neighbour for pixel art.

**URL:** https://convertto.tech/t/image-upscaler
**Category:** Image Tools (https://convertto.tech/c/image-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Auto-detect:** Fills targets at 2× the original on drop
- **Interpolation:** High, medium, low, or nearest-neighbour for pixel art
- **Target size:** Scales further if the result is under your file-size target
- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Select your images — the file stays on your device and is never uploaded.
2. Set the target width.
3. Set the target height.
4. Set the target file size.
5. Set the quality.
6. Choose the interpolation.
7. Choose the output format.
8. Pick the background.
9. Press Run, then download the result when it is ready.

## FAQ

### Will upscaling improve image quality?

Upscaling adds pixels by interpolation — it makes the image larger but cannot recover detail that was never captured. Photographs will look slightly softer at extreme scales. For pixel art, use nearest-neighbour to keep sharp edges.

### What is nearest-neighbour interpolation?

It duplicates pixels without blending, preserving the sharp, blocky look of pixel art, retro game sprites, and low-resolution icons. Photographs should use high-quality (smooth) interpolation instead.

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