Crop an image
Choose a picture, drag the box over the part you want, pick a shape if you need one, and save the crop. It runs in your browser and nothing is uploaded.
Free · no signup Runs in your browser
How do I crop a picture?
Choose the picture and a box appears. Drag the box to move it, drag the green corner to resize it, or draw a new box. Pick a shape (free, square, 4:3, 3:2, 16:9 or 9:16) to lock the proportions, then press Save crop. The crop is cut from the full-size picture, not from the preview, so you keep every pixel.
Cropping without losing detail
Cropping removes the edges of a picture to improve the composition, to fit a shape or to cut out something you do not want to share. A good cropper works on the original pixels: the preview on the page is smaller, but the box is mapped back to the full-size picture, so the saved file contains exactly the part you selected at full detail.
Fixed shapes help with the places pictures go. Square suits profile pictures and many social posts, 4:3 and 3:2 are the shapes of most cameras, 16:9 is the shape of video and slides, and 9:16 is the shape of a phone story. The tool shows the size in pixels of the selection so you can check it is big enough for where it is going.
It runs in your browser. Your picture is never uploaded, and there is no watermark or sign-up.
How it works in detail
The picture is decoded by your browser and shown scaled to fit the page. The crop box you draw is converted back to the picture's real pixels by dividing by the preview scale, so what you see matches what is saved. You can drag the box to move it, drag the green corner to resize it, or draw a new box, with a mouse, a pen or a finger. A shape such as Square 1:1, 4:3, 3:2, 16:9, 9:16 or 2:3 locks the proportions, and you can type the width and height of the crop in pixels. That part of the picture is drawn on a new canvas and saved in the original format; JPG and WebP are saved at a quality of 92, and transparent areas in a JPG are filled with white.
How to use it
- Choose the picture. A crop box appears on it.
- Pick a shape to lock the proportions, or leave it on Free.
- Drag the box to move it and the green corner to resize it, or type the width and height in pixels.
- Check the crop size shown in real pixels.
- Press Save crop and download the result.
What changes and what stays the same
What the tool does to your file, and what it leaves alone.
| Aspect | What happens |
|---|---|
| The original picture | Not changed: the crop is saved as a new file |
| Pixels inside the box | Kept at full detail; nothing is scaled |
| Format | Saved as the original format; JPG and WebP at quality 92 |
| Transparency | Kept in PNG and WebP; filled with white in JPG |
| Camera details and location | Not copied: the picture is redrawn, so it carries only the pixels |
| Privacy | Your file is read on your device and is not uploaded; there is no account and no watermark |
When to use it
- Making a square profile picture
- Cutting a picture to a slide or video shape
- Removing distracting edges or private details
- Trimming a screenshot to the part that matters
Problems you may run into
Most problems come from the file itself, not from the tool.
| What you see | Likely cause | What to do |
|---|---|---|
| The crop is a different size from the box I drew | The preview is scaled down, and the saved size is in real pixels | Read the width and height shown below the picture |
| I need an exact size | A crop keeps real pixels, so its size depends on the box | Type the crop width and height, or resize afterwards with the image resizer |
| The box will not go where I want | A locked shape keeps its proportions | Choose Free |
| A passport photo needs an unedited file | Some applications require the original from the camera | Check the rules before cropping a photo you will submit |
| The file will not open | Your browser cannot decode this format, or the file is damaged | Try Chrome, Edge or Firefox on a computer, or open the file elsewhere to check that it plays |
| The browser slows down or stops | A very large file is processed on your own device | Close other tabs, try a computer, or use a smaller file |
Mistakes it helps you avoid
- Cropping so small that the result is too low in resolution: check the size shown.
- Hiding private information by cropping and then sharing the original.
- Re-saving a JPG repeatedly: crop from the original once.
- Forgetting the shape the destination needs.
How it works
Everything happens in your browser.
1. The picture is decoded by your browser and shown scaled to fit the page.2. The box you draw is converted back to the full-size picture's pixels (box ÷ preview scale).3. That part is drawn on a new canvas and saved in the original format. Nothing is uploaded.
Crop sizes are shown in the picture's real pixels. JPG and WebP are saved at a quality of 92, and transparent areas in a JPG are filled with white. The crop box can be moved and resized with a mouse, pen or finger. Camera data such as location is not copied.
Example: a square profile picture
You have a 4000 × 3000 photo and want a square picture of the person on the left.
- ShapeSquare (1:1)
- Move the box over the facefor example a 1800 × 1800 px selection
An 1800 × 1800 pixel picture saved as photo-cropped.jpg
Make the box larger for more of the scene.
Terms on this page
- Aspect ratio
- The proportion of width to height, such as 16:9.
- Crop
- Cutting away the edges of a picture.
Common questions
Does cropping reduce the quality?
The crop keeps the original pixels of the part you select. JPG and WebP are saved again at a high quality, which costs very little.
Can I crop to a square?
Yes. Choose Square (1:1) and the box keeps its shape as you resize it.
Is my picture uploaded?
No. Your browser reads and changes the picture on your own device. Nothing is sent over the network.
Will the cropped part include everything I see in the box?
Yes. The box is mapped to the full-size picture, so the saved file matches the selection.
Does it work on a phone?
Yes. Drag the box and its corner with your finger.
Where these numbers come from
- MDN Web Docs — CanvasRenderingContext2D.rotate() How a canvas turns what is drawn on it.
- MDN Web Docs — HTMLCanvasElement.toBlob() How a browser encodes a canvas as PNG, JPEG or WebP, and what the quality argument does.
- MDN Web Docs — Using files from web applications How a page reads a file you choose without uploading it.
Last verified 2026-10-25 The method on this page is checked against the sources above at least once a year. Spotted something out of date? Tell us and we will fix it.
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