Image Cropper

Crop images with preset aspect ratios or custom dimensions -- free, private, runs in your browser

Drop an image here or click to upload
Supports PNG, JPG, WebP, GIF

How to Crop Images Online

Cropping an image removes unwanted outer areas to focus on the subject that matters. This tool lets you define a precise crop region by dragging directly on your image or entering exact pixel coordinates. Everything runs in your browser -- your images are never uploaded to a server.

  1. Upload your image by dragging it onto the drop zone or clicking to browse
  2. A default crop box appears covering 80% of the image, centered
  3. Choose an aspect ratio preset or keep it set to Free for unconstrained cropping
  4. Drag the crop box to reposition it, or drag the corner and edge handles to resize
  5. Fine-tune by entering exact pixel values for X, Y, Width, and Height
  6. Select an output format (PNG, JPG, or WebP) and click "Crop and Download"

Common Crop Ratios and Their Uses

1:1 (Square) -- Used for profile pictures on most social platforms, Instagram feed posts, and app icons. A square crop ensures your image displays consistently without platform-imposed cropping.

4:3 -- The traditional aspect ratio for digital cameras and many tablet screens. Common for prints at 8x6, 12x9, and similar sizes. Also the standard for older television and presentation displays.

16:9 (Widescreen) -- Standard for YouTube thumbnails, video frames, desktop wallpapers, and modern monitors. Use this ratio when preparing cover images for YouTube, LinkedIn banners, or any widescreen display.

3:2 -- Native ratio of 35mm film and most DSLR cameras. Standard for 6x4 inch prints and common in photography portfolios. This ratio balances width and height naturally for landscape and portrait shots.

Crop vs Resize: Understanding the Difference

Cropping and resizing are often confused, but they serve different purposes. Cropping removes pixels from the edges of an image, keeping the remaining pixels at their original resolution. The output dimensions are smaller because content has been removed. Resizing changes the dimensions of the entire image by resampling all pixels, either scaling up (interpolating new pixels) or scaling down (discarding pixels evenly). When you crop, the detail in the kept area stays exactly as sharp as the original. When you resize down, all areas lose some detail proportionally.

Use cropping when you want to remove distracting elements, improve composition, or match a specific aspect ratio. Use resizing when you need to change the overall pixel dimensions without losing any part of the image.

Frequently Asked Questions

Does cropping reduce image quality?

The crop itself does not reduce quality. The pixels inside your selection remain identical to the original. However, if you save as JPG or WebP, the re-encoding step applies lossy compression that may introduce minor artifacts. To preserve maximum quality, save as PNG.

What happens to transparent areas when I crop?

If your source image has transparent pixels and you save as PNG, transparency is preserved in the cropped output. If you save as JPG, transparent areas are filled with white because the JPG format does not support transparency. WebP supports transparency, so it also preserves transparent regions.

How do aspect ratio presets work?

When you select a preset like 16:9, the crop box locks to that proportion. Dragging any handle resizes the box while maintaining the ratio. You can still move the box freely to position it over the area you want. Select "Free" to remove the constraint and crop to any arbitrary rectangle.

Is there a maximum image size?

Since all processing runs in your browser, the practical limit depends on your device memory. Most devices handle images up to 20-30 megapixels without issues. Very large images may cause slower rendering of the crop overlay.