Is this background remover really free?

Yes, completely free with no limits. ToolKnit's background remover runs entirely in your browser using AI. No sign-up, no watermark, no usage caps.

Are my images uploaded to a server?

No. All processing happens locally in your browser using WebAssembly and an ONNX AI model. Your images never leave your device.

Why does the first use take longer?

The AI model (~40 MB) needs to be downloaded on first use. It's cached by your browser, so subsequent uses are much faster.

Can I manually fix areas the AI missed?

Yes! After auto-removal, click 'Refine Manually' to use brush and eraser tools. Paint to restore areas or erase remaining background with adjustable brush size and edge softness.

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Blog Tool Tales

Background Remover

Remove image backgrounds instantly with AI. Auto-remove or manually refine. 100% private.

AI Powered No Upload Required Manual Refine PNG Download

Drop your image here

or click to browse files from your device

Supports JPG, PNG, WebP —Max 20 MB

How it works

Three simple steps —AI does the heavy lifting in your browser.

Upload your image

Drag and drop or click to select a JPG, PNG, or WebP image from your device.

AI removes the background

Our AI model runs locally in your browser to precisely separate the subject from the background.

Refine & download

Preview the result, manually refine edges if needed, then download as a transparent PNG.

Why choose ToolKnit Background Remover?

100% Private —No Server Uploads

Your images never leave your device. The AI model runs locally in your browser using WebAssembly. No data is sent to any server —ever.

AI-Powered Precision

Uses a state-of-the-art neural network to detect subjects —people, animals, products, and more —with fine edge detail including hair and fur.

Manual Refine Tools

Not perfect? Use the built-in brush and eraser to manually refine the mask. Adjustable brush size and edge softness for pixel-perfect results.

High-Quality PNG Output

Download your result as a full-resolution PNG with transparent background. Perfect for design work, presentations, e-commerce, and social media.

Pro Tips

—/span> The AI model is ~40 MB and downloads once. After that, your browser caches it for instant use.
—/span> For best auto-removal results, use images with clear contrast between subject and background.
—/span> In manual mode, use a small brush with high softness for edge refinement around hair and fine details.
—/span> Brush restores the original image (adds to foreground). Eraser removes to background.
—/span> Use [ and ] keys to quickly resize the brush while editing.

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