About the Image Resizer
This image resizer changes the resolution (width ร height in pixels) of your photos. Use it to meet the size limits of an upload form, to make images fit social media formats, or to make huge photos lighter. Large reductions are done in several steps, so the result stays sharp without jagged edges.
Your photos are processed only in your browser and are never uploaded.
How to use
- Drop photos into the box above or tap it to choose files. You can add several at once.
- Under Pixels, enter the width or height. With the lock (aspect ratio) on, the other side is calculated from the original proportions.
- Choose Percent to scale to a share of the original, or Presets for social media sizes.
- Check the new size and tap Save or Save all (ZIP).
Common image sizes
| Use | Size (px) | Ratio |
|---|---|---|
| Instagram square post | 1080 ร 1080 | 1:1 |
| Instagram portrait post | 1080 ร 1350 | 4:5 |
| Instagram Stories & Reels | 1080 ร 1920 | 9:16 |
| YouTube thumbnail | 1280 ร 720 | 16:9 |
| Profile picture | 400 ร 400 or larger | 1:1 |
| Full HD desktop wallpaper | 1920 ร 1080 | 16:9 |
When the aspect ratio doesnโt match
- Crop to fill: keeps the original proportions, fills the target size completely and trims the edges that stick out. Good for thumbnails and profile pictures.
- Fit with padding: shrinks the photo so all of it is visible and fills the rest with padding (white for JPG, transparent for PNG and WebP).
- Stretch: ignores the proportions and stretches the image to the target size. People may look too thin or too wide.
Enlarging beyond the original size doesnโt add detail, so the image may look soft. Such files are marked Enlarged in the list.
FAQ
Does resizing also reduce the file size?
Yes. Fewer pixels mean a much smaller file. Halving width and height leaves a quarter of the pixels, so the file becomes roughly a third to a quarter of the size. To keep the dimensions and only reduce the file size, use the Image Compressor.
Can I resize many images to the same size?
Yes. With the ratio lock on, all photos get the same width (or height) and keep their own proportions. To make every photo exactly the same width ร height, turn the lock off or use a preset.
Does it change the DPI?
For screens, only the pixel count matters, and saved files donโt carry a separate DPI value. For printing at 300 DPI, you need about 1,200 pixels for 4 inches (10 cm).
What is the maximum size?
Because of browser canvas limits, up to 16,384 pixels per side, and on iPhone and iPad about 16.7 million pixels in total. Larger targets are automatically reduced to the maximum possible size, and this is shown in the list.