Resize Images Online
Resize one image or a whole batch by exact pixels or percentage. Keep the aspect ratio, pick the output format, and download instantly — nothing is uploaded.
🔒 100% private — files never leave your browser
Drag & drop images here
batch supported — all images get the same settings
Example and output check
A synthetic 200×100 image resized to width 80 with aspect lock produces 80×40 pixels. The desktop Chromium file check reopens this output and verifies both dimensions.
Before you use the result
Upscaling cannot recover missing detail. Pixel settings are applied to every selected image. Output is re-encoded; JPG uses a white background for transparency.
How to use the Image Resizer
- 1 Drag your images into the box, or click to browse.
- 2 Set the new size in pixels or as a percentage; lock the aspect ratio if needed.
- 3 Click "Resize" and download your images.
Frequently asked questions
What does aspect lock do?
With width set, height is calculated from the original ratio. With only height set, width is calculated. Disable the lock only when stretching is intentional.
Can I resize by a percentage?
Yes. Percentage mode scales each image relative to its own dimensions; 50% halves width and height.