FastImageToolsFastImageTools

Upscale an Image up to 4× Online

Use the large-resolution preset to enlarge an image by up to 4× while preserving its aspect ratio.

PNG resultUp to 4×Batch supported

Drag & drop your images

or click below to browse your files

JPGJPEGPNGWebPHEICHEIFBMP
⌘VPaste from clipboard
•Drag from Finder or Photos

Free users: up to 15 images at once • Premium: unlimited batch processing

Back to Upscale Images Online with AI

Enlarge an image up to the tool limit

This page starts with the large-resolution option for images that need a substantial increase in pixel dimensions.

The tool enlarges by no more than 4× and may use a smaller factor when the 6000 px longest-side target is reached first. “4×” is a maximum, not a guaranteed multiplier.

How to enlarge an image

  1. 1

    Add your images

    Select one or more supported image files.

  2. 2

    Review the target size

    The large preset targets 6000 px on the longest side, with a maximum enlargement factor of 4×.

  3. 3

    Save the enlarged image

    Run the tool, preview the result, and download the PNG output.

Frequently asked questions

Will 4× image upscaler recreate missing detail?

The tool enlarges by no more than 4× and may use a smaller factor when the 6000 px longest-side target is reached first. “4×” is a maximum, not a guaranteed multiplier.

Can I enlarge several images together?

Yes. Add multiple supported files and process them in one batch. The same size rules and 4× limit apply to each image.

Related image tools

Increase image resolution

Enlarge image dimensions with a practical resolution preset

Upscale image to 4K

Enlarge an image toward a 3840 px longest side

Image enlarger

Make image dimensions larger with an adjustable target

Bulk image upscaler

Enlarge several images with one consistent size rule

Image upscaler for print

Prepare more image pixels for a print layout

PNG image upscaler

Enlarge PNG pixel dimensions and download a PNG result

We value your privacy

FastImageTools uses essential cookies for core functionality.

With your consent, we also use analytics (Google Analytics) and advertising cookies (Google AdSense). You can accept all cookies, reject non-essential cookies, or manage your preferences at any time.

Privacy Policy | Cookie Policy