Resize Images Online
Change the exact pixel dimensions of any image while keeping the aspect ratio locked.
Drop file here or click to browse
JPG, PNG, WebP, GIF, BMP. Files stay on your device.
How to use Image Resizer
- 1Drop or select any JPG, PNG, or WebP image.
- 2Enter the target width or height in pixels.
- 3Keep aspect ratio locked to avoid distortion, or unlock to stretch.
- 4Click Resize & download to save the new image.
Frequently asked questions
Will resizing lower the quality?
Shrinking is essentially lossless. Enlarging beyond the original size can look soft because pixels are interpolated.
Which formats are supported?
JPG, PNG, WebP, GIF (first frame), and BMP — any format your browser can decode.
Are my images uploaded?
No. Resizing runs entirely in your browser — the file never leaves your device.
Can I resize many images at once?
This tool processes one image at a time. For batch work, resize each file in sequence — nothing is queued on a server.
Does it keep the original format?
Yes. The output uses the same format as the input (PNG stays PNG, JPG stays JPG). Convert first with our WebP or JPG to PNG tools if needed.