Upscale Image Online Using AI

Improve image resolution online using FastPDFEdit. Upscale images while keeping details sharp and clear.

FastPDFEdit provides a free AI image upscaler online.

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Max 5MB - JPG, PNG

Note: This uses standard algorithms to guess details. It works best on clean images, not blurry ones.

How to Upscale an Image Online

  1. Upload your image — Choose a JPG or PNG file from your device (max 5MB).
  2. Click "Upscale 2x" — Our tool doubles the resolution using bicubic resampling and sharpening filters.
  3. Download — Save your enhanced image with a 2x larger resolution.

What Does Image Upscaling Do?

Upscaling increases the pixel dimensions of an image — for example, from 800x600 to 1600x1200. Our tool uses bicubic interpolation combined with sharpening filters to make edges and details appear crisp at the larger size.

This is useful when you need a larger version of a logo, a profile picture, or a product image that was originally saved at low resolution. Note: upscaling cannot recover detail that was never in the original image, but it prevents the blurry "pixelated" look of simple stretching.

Frequently Asked Questions

By how much does the upscaler increase resolution?
The upscaler doubles the image dimensions (2x). A 500x500 image becomes 1000x1000.

What types of images work best with upscaling?
Clean, sharp images with defined edges work best. Logos, graphics, product photos, and portraits upscale well. Very blurry or heavily compressed images will not improve significantly.

Does upscaling increase the file size?
Yes. Doubling the resolution increases the pixel count by 4x, which means the file size will also increase. You can use our Image Compressor afterward if needed.

What formats are supported?
JPG and PNG are currently supported for upscaling.

Is there a watermark on the upscaled image?
No. FastPDFEdit never adds watermarks to any processed file.

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