Image Resizer
Resize any image right in your browser. Set exact pixel dimensions, scale by a percentage, fit inside a box, or cap the longest edge, with the aspect ratio locked by default. Choose the output format and quality, compare the before and after, and download. The image is processed entirely on your device and never uploaded.
How to resize an image
- Drop an image in, or click to browse for one.
- Pick a resize mode and enter your target size, then choose a format.
- Check the new size and download the resized image.
Examples
Shrink a phone photo for the web
A 4032 x 3024 JPEG straight from a phone
Resized to 1200 x 900 and re-encoded as WebP, far smaller
Frequently asked questions
Is my image uploaded to a server?
No. The resize happens entirely in your browser using the Canvas API. Your image never leaves your device, which makes this safe for private or sensitive pictures.
Will resizing reduce the quality?
Making an image smaller keeps it sharp; the tool uses high-quality smoothing. Enlarging past the original size cannot add real detail, so upscaling is off by default and must be enabled deliberately.
Which formats can I export?
PNG (lossless, keeps transparency), JPEG (small, best for photos), and WebP (modern, usually the smallest). A quality slider appears for the lossy formats.
Does it keep the aspect ratio?
Yes by default, so images never look stretched. You can unlock it in Dimensions mode to set an exact width and height.
Is there a file size limit?
Only your device's memory. Very large images use more memory to decode, but everything stays local with no upload cap.
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