Paint Bucket Tool

Fill areas in images instantly with our free online paint bucket tool. Upload any image and use the flood fill algorithm.

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About This Tool

This free online paint bucket tool allows you to fill connected areas in any image with your chosen color. Upload an image file (PNG, JPG, GIF), select a fill color using the color picker, adjust the tolerance to control how similar colors are filled, and click on the canvas to apply the fill. The tool uses a flood fill algorithm to detect and fill connected pixels. You can also adjust brush size for precise filling and download the result.

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How to Use

Upload an image using the upload area or drag-and-drop.
Use the color picker to select a fill color.
Adjust tolerance (0-
to control color similarity.
Adjust brush size if needed.
Click on the canvas to fill the area.
Use 'Reset Canvas' to start over or 'Download Image' to save.

Frequently Asked Questions

Find Quick Answers

What image formats are supported?

The tool supports PNG, JPG, and GIF formats for upload.

How does the tolerance setting work?

Tolerance (0-100) controls how similar colors are to the clicked pixel to be filled. Lower values fill only very similar colors; higher values fill a wider range of colors.

Can I use this tool on mobile devices?

Yes, the tool is fully responsive and works on mobile, tablet, and desktop browsers.

Is there a limit to image size?

For performance, very large images may be resized. The tool handles typical image sizes up to 2000x2000 pixels well.

Need to run multiple calculations?

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