Show HN: RetroFill – paint a realistic GitHub contribution graph (1-click undo)

Category: devtools

Tags: github, contribution-graph, realism-engine, seeded-random, developer-tools

Score: 4.0/10 (Innovation: 4, Technical: 5, Documentation: 4, Utility: 3)

RetroFill generates realistic-looking GitHub contribution graphs using a seeded realism engine that models weekday weighting, energy curves, streak dynamics, vacations, heavy-tailed commit counts, and session timestamps. It offers a one-click undo and deterministic rerolling, allowing users to fabricate believable activity patterns.

Target audience: developers seeking to enhance their GitHub profiles artificially

Repository: https://retrofill.dev

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