Image Fill Color Editor

This tool provides flood-fill by color on raster images, enabling users to replace a contiguous region with a chosen color while respecting a tolerance threshold. It accepts a start point, a fill color, and optional connectivity and opacity settings, then outputs a new image with the same dimensions and channels as the input. It is suitable for UI mockups, game sprites, and asset editing where uniform region recoloring is required. Conceptually, the tool performs a region-growing operation that expands from the starting pixel to neighboring pixels whose colors fall within the tolerance band, ensuring edges remain crisp or anti-aliased as configured. In practice, designers adjust tolerance to balance precise edge control against unintended spills, and use connectivity options to control how the region is grown. The core value lies in fast, repeatable color replacement without manual per-pixel edits, enabling consistent, scalable edits across assets. Core features include configurable fill color, tolerance range, connectivity mode, optional opacity, and a non-destructive output; inputs are validated to prevent out-of-bounds coordinates, and defaults favor safe, predictable results. Typical use cases include recoloring character sprites, UI elements, icons, or any raster asset where a single region needs a uniform color. The tool focuses on speed, accuracy, and interoperability with common formats, facilitating integration into asset pipelines and web workflows.