Resize Images by Width, Height or Percent
Enter a maximum width and height, or scale by percent. The aspect ratio is kept, and images that are already smaller than your limit are left at their size.
Your image files never leave your device.
or drag and drop images here
Supports: JPG · PNG · WebP · AVIF · HEIC (beta) · GIF · BMP
Up to 100 images at once.
You can also paste an image (Ctrl+V or ⌘V).
Settings
Output format
Target size (optional)
Good to know
- Fit within a box: set a width, a height, or both. The picture keeps its proportions.
- Images are only ever made smaller. A picture smaller than your limit keeps its size.
- You can also scale by percent, for example 50% of the original width and height.
How to resize an image
- Add your images: drag them in, choose files, or paste from the clipboard. Up to 100 at a time.
- Choose how to resize: a maximum width, a maximum height, both, or a percent of the original size.
- Press Start. The result list shows every file’s size before and after.
- Download one file, a selection, or everything as a ZIP. Your originals are never changed.
How the size is calculated
- Width and height describe a box, not an exact size. The picture is scaled to fit inside the box and keeps its proportions, so setting only a width is enough.
- A picture that is already smaller than the box keeps its size. This tool only makes pictures smaller.
- Percent scales both sides together: 50% leaves a quarter of the pixels.
- You can add JPG, PNG, WebP, AVIF, GIF and BMP. HEIC (iPhone photos) is in beta and only opens in browsers that can decode it.
Example
A 4000 × 3000 phone photo with a maximum width of 1600 comes out at 1600 × 1200: the 4:3 proportions are kept. The same photo in a 1000 × 1000 box comes out at 1000 × 750, because the longer side has to fit. An 800 × 600 picture stays 800 × 600 in both cases.
Limits
- Resizing changes pixels, so the picture is encoded again. JPG and WebP are lossy, so resize from your original rather than from an earlier result.
- You set pixels, not file size. For a file under a number such as 100KB, use Target File Size; resizing a very large photo first can help.
- Smaller pictures show less detail. A picture sized for a screen is too small for a sharp large print, so keep the original.
- Enlarging is not offered: no tool can add real detail that the picture does not have.
Processed in your browser
Resizing runs on your device. Your browser loads the page and the image engine from this site and works on your pictures locally; they are not uploaded. Reloading the page removes the images you added.