About the Background Remover

Background Remover is a free online tool that automatically detects and removes the background from any photo, giving you a clean transparent PNG — no manual masking, no sign-up required.

How It Works

When you upload an image, it is sent to our processing server where the rembg library applies the U2Net neural network model to detect the foreground subject. U2Net is a salient-object detection architecture trained on large datasets of portraits, products, and everyday objects; it predicts a per-pixel alpha matte that separates the foreground from the background.

The output is a PNG with full transparency: pixels that were background become fully transparent, while the subject is preserved at its original colour and quality. The result is returned to your browser as a base64-encoded data URI — nothing is stored on disk after the response is sent.

What Is sortout.app?

sortout.app is a growing collection of focused web tools, each designed to do exactly one thing well. Every tool is free, requires no account, and is built to load fast anywhere.

Best Results Guide

• High-contrast subjects — a subject clearly distinct from its background gives the best edge quality.
• Portrait photos — U2Net is especially well-trained on people and faces.
• Product photos — objects on plain or gradient backgrounds work excellently.
• Complex hair and fur — the model handles fine-detail edges well but may struggle with very wispy hair against busy backgrounds.

Privacy

Your files are sent to our server over HTTPS, processed immediately, and deleted — never stored or shared. See our full Privacy Policy.

Frequently Asked Questions

Is this tool free?

Yes, completely free with no usage limits.

Do I need to create an account?

No. There is no sign-up, no login, and no registration of any kind.

What image formats are supported?

JPEG, PNG, and WebP. Maximum file size is 20 MB.

Why does the edge look rough on my image?

U2Net performs best when the subject is clearly distinguishable from the background. Very low-resolution images or subjects with highly complex edges (e.g., a person with curly hair in front of a similarly coloured wall) may produce softer or incomplete masking. For critical work, the transparent PNG can be refined in any image editor.

Can I use the result commercially?

Yes — we claim no rights over your images or the outputs. You retain full ownership. Ensure you have the rights to the original photo before using it commercially.

Contact

Questions or feedback? Open an issue at github.com/sortout-app/feedback or email hello@sortout.app.