Image Resizer
Resize images to the exact width and height you need — by pixels or percentage, with aspect ratio locked by default. Everything happens in your browser.
To resize an image, upload it, enter a target width, height or percentage (aspect ratio locked by default), and download the resized image — all in your browser.
Drop Image Here to Resize
Resize JPG, PNG, WebP, or GIF images to exact pixel dimensions. 100% private.
Zero Server Uploads
Files process in local RAM
Instant WASM Speed
No waiting queues or lags
Unlimited Batching
Convert files without limits
How to use Image Resizer
- 1Upload a JPG, PNG or WebP image.
- 2Enter a target width or height, or use a percentage; keep the ratio locked to avoid distortion.
- 3Pick an output format and quality.
- 4Download the resized image.
How it works
Upload an image, enter a target width or height (or a percentage), and it's resized on your device using a high-quality canvas scaler with a live preview. Keep the aspect ratio locked to avoid distortion, or unlock it to stretch to exact dimensions.
Choose your output format and quality, then download.
Common uses
Fitting an image to a maximum width for a website or email, preparing an avatar or thumbnail, shrinking a photo before uploading to a form with size limits, or hitting an exact pixel size like 1080×1080.
Frequently Asked Questions
Are my images uploaded to a server?
No. Every conversion runs locally in your browser using your device's own processor. Your images never leave your computer or phone, and nothing is stored on our servers.
Will resizing distort my image?
Not if you keep the aspect ratio locked (the default) — setting one dimension scales the other proportionally. Unlock it only if you intend to stretch to exact dimensions.
Can I make an image larger?
Yes, but enlarging past the original resolution can look soft, since there's no extra detail to add. Downscaling always stays crisp.
Which formats can I output?
You can keep the original format or export the resized image as JPG, PNG or WebP, with a quality control for the lossy formats.