Online Paint Bucket & Color Fill Tool
Fill areas of your images with 1 click. Features: color picker, pick colors from your image, tolerance control, and opacity adjustments. Perfect for coloring books, lineart, recoloring backgounds. No AI, no watermark, no limits. We don't see and collect your images, and we do not regenerate your images - you have full control over the changes you apply.
How to use this tool:
- Upload your image
- Pick colors from the Color Picker under the tool or directly from your uploaded image by clicking or tapping the "Pick Color from Image" button. You can also paste your own HEX color code into the field below the tool.
- Fill areas of an image with any color with a single click or tap
- Adjust tolerance to control how far the color spreads
- Reduce opacity if you want to apply semi-transparent color overlays
- Undo previous actions if you are not satisfied
- Download the edited image in the original resolution
- Keep your images private - files are not uploaded or stored
Unique Feature - Opacity Slider
The Opacity slider allows you to apply color semi-transparently. This means the original texture of the image remains visible while the new color is blended on top.
This feature is also useful for neutralizing strong colors. For example, if a shirt appears too red, you can apply a green or gray color with reduced opacity. The original red tone will still show through, but it becomes less intense and more balanced.
What this tool is useful for:
- Recoloring logos and icons
- Editing illustrations
- Changing clothing colors in photos
- Color fill for line art in coloring books
- Coloring backgrounds
- Desaturating colors with semi-transparent color overlays
- Applying color overlay
- and many more...
This tool is a digital version of "Glazing" - a technique oil painters have used for centuries to shift tones. With our tool you can apply this effect to specific parts of the image. It can also be used as a color correction tool. You can also reduce the strength of a texture by picking the base color, reducing its opacity, and applying it over the same area using the paint bucket tool.



