Upscale images up to 8x resolution
Click to upload an image
JPG, PNG, WEBP supported
Image Upscaler is a free online tool that enlarges your images entirely in your browser using the HTML canvas element with high-quality smoothing. Choose a scale factor from 2x to 8x and get a larger PNG instantly — everything runs locally on your device, so your image is never uploaded to a server. Note that this resizes and smooths the image rather than using AI to invent new detail, so very large scale factors will look softer than the original.
Is Image Upscaler really free to use?
Yes, Image Upscaler is completely free with no hidden charges, subscriptions, or watermarks on your upscaled images.
What image formats are supported?
It accepts common formats your browser can open, such as JPG, PNG, and WebP. The output is always a PNG file.
Does this use AI to add detail?
No. Image Upscaler enlarges your image using the browser's built-in canvas smoothing rather than an AI super-resolution model, so it won't invent new detail — it's best for moderate enlargements rather than recovering fine detail from a very small source image.
Is my image uploaded to a server?
No, everything happens locally in your browser. Your image is never sent to a server, which also means processing is instant.