How does this image upscaler work?

It uses high-quality bicubic interpolation built into the browser to enlarge your image 2× or 4×, then applies an optional unsharp mask to restore sharpness. It runs entirely on your device — no uploads, no servers, instant results.

When should I use this instead of the AI upscaler?

Use this tool when you need a fast, predictable upscale for photos, screenshots, diagrams, or any general image. It works on every image format and doesn't require downloading an AI model. For maximum quality on photos or art, try the AI Image Upscaler.

Are my images uploaded anywhere?

No. All processing happens 100% in your browser using the standard Canvas API. Your images never leave your device — complete privacy is guaranteed.

Image Upscaler

Upscale images 2× or 4× using high-quality bicubic interpolation plus adjustable sharpening — 100% in your browser. Fast, general-purpose, works on any image. Your files never leave your device.

Your data never leaves your device

Frequently Asked Questions

How does this image upscaler work?

It uses high-quality bicubic interpolation built into the browser to enlarge your image 2× or 4×, then applies an optional unsharp mask to restore sharpness. It runs entirely on your device — no uploads, no servers, instant results.
When should I use this instead of the AI upscaler?

Use this tool when you need a fast, predictable upscale for photos, screenshots, diagrams, or any general image. It works on every image format and doesn't require downloading an AI model. For maximum quality on photos or art, try the AI Image Upscaler.
Are my images uploaded anywhere?

No. All processing happens 100% in your browser using the standard Canvas API. Your images never leave your device — complete privacy is guaranteed.