Resize Image
Resize any JPG, PNG, or WebP to exact pixel dimensions or a percentage — with aspect ratio locked if you want it. Runs entirely in your browser.
Image Resizer
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Resize Photos and Images to Any Size
Whether you need an avatar at exactly 400×400, a banner at a specific width, or a photo shrunk to upload faster, this tool resizes JPG, PNG, and WebP images to precise pixel dimensions. Tick Keep aspect ratio and set just the width (or height) and the other dimension is calculated for you, so nothing gets stretched.
Resizing is done on an HTML canvas in your browser. Everything runs on your device via open-source browser libraries — your file is never uploaded. You can verify it yourself.
Frequently Asked Questions
Leave Keep aspect ratio ticked and set only one dimension — the other is computed automatically to keep the proportions correct.
Yes. Pick JPG, PNG, or WebP as the output, or keep the original format. WebP usually gives the smallest file at the same quality.
Making an image smaller is clean. Enlarging beyond the original size will look softer, since the tool cannot invent detail that was not captured.
No — resizing happens entirely in your browser. The image never leaves your device.