DESIGN TOOL
Image Resizer
Resize an image to exact dimensions or a percentage, right in your browser.
About this tool
Upload an image and resize it to exact dimensions, then download the result — all processed locally in your browser using the canvas element, with no upload to a server.
Frequently asked questions
- What does "lock aspect ratio" do?
- When on, changing the width automatically recalculates a matching height (and vice versa) so the image doesn't get stretched or squashed.
- Which format should I choose?
- PNG preserves transparency and sharp edges, best for graphics and screenshots. JPEG produces smaller files for photos but doesn't support transparency. WebP often gives the smallest file size with good quality for either.
- Can I make an image bigger than the original?
- Yes, but enlarging beyond the original resolution can make it look soft or blurry, since no new detail is actually being added — it's best for shrinking images or minor size adjustments.