UlvixorBackground Remover (Chroma Key)
Upload an image with a solid-color background (green screen, white background, or any flat color) and remove it with one click to get a transparent PNG. This tool uses a color-distance chroma-key technique, not artificial intelligence, so it works best on flat, uniform backgrounds rather than complex photographs. All processing happens in your browser.
How it works
- Select an image from your device using the file picker.
- Click on the background area in the preview to pick that color as the one to remove, or select it manually with the color picker.
- Adjust the tolerance control: the higher it is, the more shades similar to the chosen color become transparent.
- The tool calculates each pixel's color distance from the chosen color and adjusts its transparency accordingly, with a softened edge instead of a hard cutoff.
- Download the result as a PNG, the only format that preserves transparency.
Use cases
- Remove a green or blue background (homemade chroma key) from a photo taken against a plain fabric backdrop.
- Remove the white background from a product photo for use in a catalog or online store.
- Prepare a photo with a uniform background to use as a sticker or overlay it in a design.
- Clean up the background of a scanned logo or signature on white paper.
Use cases
- Remove a green or blue background (homemade chroma key) from a photo taken against a plain fabric backdrop.
- Remove the white background from a product photo for use in a catalog or online store.
- Prepare a photo with a uniform background to use as a sticker or overlay it in a design.
- Clean up the background of a scanned logo or signature on white paper.
Common mistakes
- Using the tool on a photo with a complex background expecting it to recognize and cut out the subject automatically.This tool doesn't use AI or subject detection: it removes a specific color by color distance (chroma key). It works best on solid, uniform-color backgrounds, like a green screen or a white studio backdrop.
- Downloading the result expecting to choose JPEG and keep the transparency.The result always downloads as PNG, the only format on this site that supports lossless alpha-channel transparency.
- Picking the background color by clicking on a shadowed or gradient area instead of a flat, representative spot.If the chosen point doesn't represent the background's overall color well, some background remains or parts of the subject disappear. Click on a uniform area of the background and adjust the tolerance until you get a good result.
Frequently asked questions
No. It's a classic chroma-key technique: it measures the color distance between each pixel and the chosen background color, and makes sufficiently similar pixels transparent. It doesn't detect subjects or analyze image content, so it works best on solid, uniform-color backgrounds (green screen, white studio backdrop, etc.) rather than photos with complex or textured backgrounds.
No. All processing (reading pixels, calculating color distance and transparency) happens in your browser with canvas. The image is never sent to any server.
This can happen if the background isn't perfectly uniform (shadows, gradients, or reflections) or if the subject shares similar tones with the chosen background color. Try adjusting the tolerance, picking the color by clicking a more representative area of the background, or using a photo with better lighting and a more uniform background.
Because PNG is the only common image format on this site that supports alpha-channel transparency without loss. JPEG, GIF, and BMP can't represent transparency the same way, so it wouldn't make sense to offer them as output here.
That's not its strong suit. Since it doesn't use subject recognition or AI, on photos with varied, textured, or multi-colored backgrounds the result can be uneven, removing parts of the subject or leaving background remnants. It performs better the more uniform and higher-contrast the background is relative to the subject.
Alternatives
AI-powered tools like remove.bg, or Photoshop's 'Select Subject', work better on photos with complex backgrounds. This tool is a fast, free alternative for the specific case of solid-color backgrounds (chroma key), and all processing happens in your browser without uploading the image to any server.