Aspect Ratio & Crop Image Online
Maintain and adjust image aspect ratios — 1:1, 4:3, 16:9, or custom. Crop and resize while locking proportions. Free and browser-based.
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About This Tool
This tool allows you to change the aspect ratio and crop your images. You can select from a list of preset aspect ratios, or enter your own custom values. The tool also allows you to crop outside the image boundaries and fill the extra space with a color of your choice.
Features
- Change image aspect ratio with presets or custom values
- Crop images by dragging and resizing the crop box
- Option to allow cropping outside the image boundaries
- Choose output format (PNG, JPEG, WebP) and background color
- Process images entirely in your browser, no server uploads
How to Use
- Upload an image by dragging it into the upload area, or by clicking to browse.
- Select a preset aspect ratio or enter a custom one.
- Adjust the crop box on the image to frame it as you like.
- Optionally, enable "Allow crop outside image boundaries" and select a background color.
- Choose an output format and click "Download" to save your image.
Supported File Types
Image: PNG, JPG, WebP, and other common image formats.
Privacy and Security
We respect your privacy. This tool is a browser-based application, which means your files are processed directly on your device. No data is ever uploaded to our servers. For added security, any files you work with are automatically cleared from your browser's memory.
Guides
- How to Change an Image’s Aspect Ratio (16:9, 4:3, 1:1)Change a picture to 16:9, 4:3, 1:1 or a custom ratio by cropping — or by extending the canvas with a background colour so nothing is cut off. Free.
- How to Resize an Image to Exact Pixel DimensionsMake a picture exactly 1200 × 800, 600 pixels wide or any size a form or website asks for — with or without keeping its proportions. Free, no upload.
- How to Crop an Image Online to Any Size or ShapeCrop a photo to a square, 16:9, 4:5 or exact pixel size by dragging a frame over it — and apply the same crop to a whole batch of images. Free, no upload.
- How to Split an Image into a Grid for InstagramCut one picture into 3, 6 or 9 tiles for an Instagram profile grid, or into slides for a seamless panorama carousel — plus the order to post them in.
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