Create larger dimensions
Upscale Image Online
Upscale an image online to 2x, 3x or 4x its original dimensions with high-quality browser resampling. No upload or account required.
Choose an image
Drop a file here or choose one from your device.
Private browser processing · Maximum 50 MBBefore you start
What Upscale Image does and when to use it
Upscaling creates more pixels so an image can meet a larger dimension requirement. ResizeImg offers 2×, 3× and 4× output using high-quality browser smoothing. It is most useful for diagrams, simple graphics and modest enlargement where convenience matters more than invented detail.
Best for
Common uses
- Meeting a minimum pixel-dimension requirement
- Enlarging simple graphics and screenshots
- Preparing a larger working copy for another browser edit
Under the hood
How the browser processes it
The selected multiplier is applied to both width and height, preserving the original aspect ratio. The browser then resamples the source into a larger canvas with high-quality smoothing and encodes the result as a new file.
Practical checklist
Tips for a better result
- Try 2× before choosing a more aggressive enlargement
- Inspect faces, small text and hard edges at 100%
- Keep the original because the result will be larger
Know the limits
What this tool cannot promise
This is not AI or generative upscaling. It cannot reconstruct fine texture, correct focus or reveal hidden information. Output is capped at 12,000 pixels per side, and large images may use significant device memory.
Simple workflow
How to upscale image online
- 01
Choose the image you want to enlarge.
- 02
Select a 2x, 3x or 4x scale.
- 03
Upscale and download the larger file.
Questions and answers
Upscale Image FAQ
Is this AI upscaling?
No. This tool uses high-quality browser resampling. It creates more pixels but does not invent new photographic detail.
Why is the result file larger?
A larger image contains more pixels, so its file size usually increases even when compressed.