Does this tool support automatic AI background removal?

No, this tool uses chroma-key color thresholding running locally in your browser. This guarantees 100% data privacy and runs without external server costs.

Why does parts of the subject get erased as well?

If the subject contains colors similar to the background, increasing tolerance will key them out too. Adjust the tolerance lower or choose a more distinct color.

Remove Background

Erase background from images online for free. Select key colors and adjust tolerance sliders to create transparent PNGs locally.

⚡ Interactive Calculation Engine Active

Please enable JavaScript in your browser to run live computations, 2D envelope diagrams, and export PDF reports.

How to Use Remove Background

Upload an image with a solid or high-contrast background.
Click on the color picker tool or click directly on any pixel in the background preview.
Adjust the tolerance slider to expand or narrow the erased color range.
Adjust the edge smoothing slider and click download to save as a transparent PNG.

Color Keying / Chroma Key Basics

Color keying maps each pixel to its RGB channels and calculates the distance to the target color. Pixels falling within the tolerance threshold are assigned an alpha value of 0 (transparency).

Frequently Asked Questions

Does this tool support automatic AI background removal?: No, this tool uses chroma-key color thresholding running locally in your browser. This guarantees 100% data privacy and runs without external server costs.
Why does parts of the subject get erased as well?: If the subject contains colors similar to the background, increasing tolerance will key them out too. Adjust the tolerance lower or choose a more distinct color.