Image Cropper
Crop photos with a drag box, aspect presets, rotate and flip
How to Use
- Drop a photo on the box or tap it to choose one.
- Pick an aspect ratio (Free, 1:1, 4:3, 3:4, 16:9, 9:16 or Passport 35:45).
- Drag inside the box to move it and drag a corner to resize it. This works with a finger on phones too.
- Use Left, Right or Flip to rotate or mirror the photo if needed. The cropped size in pixels is shown as you go.
- Choose JPG, PNG or WebP and tap Download.
What is cropping?
Cropping cuts away the edges of a picture so that only the part you want remains: removing a messy background, cutting a group photo down to one face, or fitting a picture to a required shape such as a square profile photo or a 35 × 45 mm passport-style photo. This cropper shows a box on your image that you move and resize with a mouse or your finger. Everything runs in your browser and the original file is never uploaded or changed.
Aspect ratios explained
An aspect ratio is width : height. Locking a ratio keeps the crop box that shape while you resize it:
| Ratio | Shape | Common use |
|---|---|---|
| 1:1 | Square | Profile pictures, Instagram posts |
| 4:3 / 3:4 | Classic photo | Most phone camera photos, prints |
| 16:9 | Wide | YouTube thumbnails, laptop and TV screens |
| 9:16 | Tall | Phone wallpapers, stories and reels |
| 35:45 | Passport style | 35 mm × 45 mm photos used on many Indian forms |
| Free | Any | Cutting out a document, a receipt or a signature |
Online forms often ask for an exact pixel size and file size too. For those, crop here first if you want precise control, then use the Exam Photo & Signature Resizer or the Image Resizer.
How the crop box is calculated
The box is stored in the image's own pixels, so the output is always full resolution even though the picture on screen is smaller. When you drag a corner, the opposite corner stays fixed. With a locked ratio, the tool follows whichever direction you moved further and adjusts the other side:
else: width = height × ratio
then shrink both (keeping the ratio) if the box would leave the image
The box can't be dragged outside the picture and can't be made smaller than 8 pixels. The Cropped size shows the exact output in pixels.
Worked example
Your photo is 3000 × 4000 pixels (portrait) and you need a passport-shaped crop. Pick Passport 35:45. The starting box is 80% of the largest 35:45 area that fits: the image is 3000 wide, and 3000 ÷ 35 × 45 ≈ 3857 is less than 4000, so the largest box is 3000 × 3857 and the starting box about 2400 × 3086, centred. Drag it over the face and shrink it from a corner until the head and top of the shoulders fill it. If you end with a 1050 × 1350 box, the download is 1050 × 1350 pixels: 35:45 exactly, since 1050 ÷ 35 = 1350 ÷ 45 = 30.
Rotate and flip
Left and Right turn the picture by 90°, which swaps its width and height. Flip mirrors it left to right, useful for selfies that come out reversed or for scanned documents. Phone photos are first turned the right way up using their EXIF orientation, so you only need these buttons when the picture itself was taken at an angle. Rotating or flipping resets the crop box.
Tips
- On a phone, drag the yellow corner squares; the touch area around each corner is larger than the square itself.
- With a keyboard, select the box with Tab and move it with the arrow keys (hold Shift for bigger steps).
- Save as JPG for photos and forms, PNG for screenshots or to keep transparency, and WebP for websites.
- Cropping keeps the original pixels; it doesn't add sharpness. If the crop is very small, the picture may look soft when enlarged.