Crop an image online
Processed in your browser: your image is never uploaded.
How to use this calculator?
1. Choose an image (JPG, PNG, WebP or GIF)
2. Pick proportions (free, square, 16:9…) and place the frame over the area to keep
3. Rotate or flip the image if needed, or type the exact position and size in pixels
4. Choose the output format and download the cropped image
Quick answer
How do you crop a photo to a square or to 16:9?
Choose the 1:1 or 16:9 proportions, place the frame over the area to keep, then download. The frame height equals width ÷ ratio. Example: on a 4000 × 3000 px photo, the largest 16:9 frame is 4000 × 2250 px (4000 ÷ 16 × 9) and the largest square is 3000 × 3000 px.
| Proportions | Common use |
|---|---|
| 1:1 | Profile picture, square post |
| 4:5 | Instagram portrait post |
| 9:16 | Story, Reels, TikTok |
| 16:9 | Video, YouTube thumbnail, screen |
| 3:2 | Camera photo, 4 × 6 in print |
About the Crop Image
What is it?
The crop tool cuts an image down to the area you want to keep. You place a frame over the photo, freely or with fixed proportions (1:1, 4:5, 16:9, 9:16…), and you can also rotate or flip the image before saving it.
Why use it?
Cropping puts the subject forward, removes a distracting element and fits a photo to its purpose: square for a profile picture, 4:5 for Instagram, 16:9 for a video or a banner. It is also the way to fix a photo taken sideways or upside down.
How does it work?
The frame is defined in pixels of the original image (X and Y position, width, height). When proportions are chosen, the height follows the width with height = width ÷ ratio: a 16:9 frame that is 1920 px wide is 1920 ÷ (16 ÷ 9) = 1080 px high. The image is cut in your browser at full resolution, with no extra quality loss in PNG, and it is never uploaded to a server.
Usage tips
- Use the rule of thirds: place the subject on one of the grid lines rather than in the centre
- Choose 1:1 for a profile picture, 4:5 for an Instagram post and 9:16 for a story
- Type the width and height in pixels when a website requires an exact size
- Cropping reduces the number of pixels: start from the largest photo you have
- After cropping, use the image resizer to get a precise size