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OmniGIF Removes GIF Backgrounds Entirely in the Browser Without Uploading Files

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OmniGIF is a browser-based tool that removes backgrounds from animated GIFs without uploading files to any server. All processing — including decoding, color keying, edge cleanup, and re-encoding — runs locally using Canvas ImageData and a GIF encoder Worker. The tool uses chroma-style removal based on RGB color matching within a user-defined tolerance, rather than neural or semantic segmentation, making it fast and deterministic. It handles GIF-specific challenges such as frame-by-frame consistency, a 256-color-per-frame limit, and subjects that share background hues. Users can set the target background color via auto-detection, manual pixel picking, or built-in presets for common cases like white, black, and green screen backgrounds.

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