Free · in your browser
Image Resizer
Resize any image to exact pixels or by percentage — with aspect-ratio lock. Free, instant, and private: your file never leaves your device.
Original
Resized
Private by design — your image is processed locally and never uploaded.
How to resize an image
- Drag your image onto the box above (or click to choose, or paste it).
- Type a new width or height in pixels, or drag the scale slider. With aspect ratio locked, the other dimension follows automatically.
- Optionally pick an output format, then click Download.
Why resize images?
Oversized images are the most common cause of slow web pages. Serving an image at the dimensions it's actually displayed — instead of a giant original — cuts load time, saves bandwidth, and improves your Core Web Vitals and SEO. This resizer does it in seconds, without uploading anything.
Frequently asked questions
Is this image resizer free and safe?
Yes — it is 100% free with no sign-up, and completely private. Your image is processed in your browser using the Canvas API and never uploaded to any server.
Can I resize without losing the aspect ratio?
Yes. Keep the "Lock aspect ratio" box ticked and the height updates automatically when you change the width (and vice-versa), so the image never looks stretched.
What image formats can I resize?
PNG, JPG/JPEG, and WebP. You can also export to a different format using the Format dropdown.
Will resizing reduce file size?
Usually yes — smaller dimensions mean fewer pixels and a smaller file, which makes your pages load faster.