What is rembg?

rembg is a popular Python package for automatically removing the background from images using deep learning. It’s fast, easy to use, and runs entirely on your local machine.

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Key Features

• Automatic Background Removal rembg detects the subject of an image and removes the background, making it fully transparent (outputs a PNG with alpha channel).

• No Cloud Uploads—Runs Locally All processing happens on your computer. No need to upload images to an external server.

• Versatile Works with people, products, animals, objects—almost any image with a clear foreground.

• Fast Uses pre-trained ONNX models for efficient, reliable performance (CPU or GPU).

• Scriptable and Programmable Use from the command line or directly in your Python scripts.

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How to Install rembg

To install the CLI and all extras:

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pip install 'rembg[cli]'

Note: It may be necessary to install more dependencies to get rembg to work. Read the snippet below for more details.

Download requirements.txt

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pip install -r requirements.txt

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How to Use rembg

1. As a CLI Tool:

Remove the background from a photo in one line:

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rembg i input.jpg output.png

• input.jpg: Your original image (JPG, PNG, or WEBP)
• output.png: Output with transparent background

2. As a Python Library:

Use in your own Python scripts:

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from rembg import remove

with open("input.jpg", "rb") as i:
    result = remove(i.read())
    with open("output.png", "wb") as o:
        o.write(result)

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Typical Use Cases

• Preparing product photos for e-commerce
• Creating profile images or avatars
• Making collages or cutouts for design/art projects
• Automating bulk background removal

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Why Use rembg?

• Open Source and Actively Maintained
• Local Processing (privacy)
• Works with Python and CLI
• Great for automation and creative workflows

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More Information

• Official GitHub: https://github.com/danielgatis/rembg
• Supported Formats: JPG, PNG, WEBP (input), PNG (output)

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In summary: rembg is the easiest and most powerful way to automatically make cutouts from images, with just one command or line of code.