{"adoption": {"forks": 187, "observed_at": "2026-08-28T04:03:54.149893+00:00", "stars": 1181}, "canonical_url": "https://ross.abutalabs.com/products/rompatcherjs", "card": {"archived": false, "artifact_type": "application", "description": "An IPS/UPS/APS/BPS/RUP/PPF/xdelta ROM patcher made in HTML5.", "domain": ["gaming-tools", "files", "web-development"], "enriched": true, "function": ["file-system", "cli", "developer-tools"], "health_score": 90, "homepage": "https://www.marcrobledo.com/RomPatcher.js/", "language": "JavaScript", "license": "NOASSERTION", "license_family": "other", "maturity": "stable", "member_repos": ["marcrobledo/RomPatcher.js"], "name": "marcrobledo/RomPatcher.js", "platform": ["browser", "cli", "cross-platform"], "pushed_at": "2026-07-11T10:40:21+00:00", "repo": "marcrobledo/RomPatcher.js", "stars": 1181, "tags": ["rom-patcher", "romhacking", "ips", "ups", "bps", "ppf", "xdelta", "vanilla-js", "embeddable", "nodejs", "web-server"], "topics": ["patcher", "rom", "romhacking", "ips", "ups"], "urls": [], "use_cases": ["apply an IPS patch to a ROM in the browser", "create a BPS patch from original and modified ROMs", "embed an online patcher on a romhacking site so users patch without downloads", "patch ROMs from a Node.js CLI script", "check a ROM's CRC32/MD5/SHA-1 before patching", "remove ROM headers before applying patches", "automatically unzip ROM files before patching"], "what_it_is": "A browser-based and Node.js ROM patcher supporting many patch formats (IPS, UPS, APS, BPS, RUP, PPF, EBP, BSDiff, xdelta/VCDiff, and more). It can both apply and create patches, and can be embedded into websites to offer an online patcher.", "when_to_avoid": ["you need to patch formats not in the supported list", "you need a native desktop application with deep ROM editing features beyond patching"], "when_to_choose": ["you need to apply or create ROM patches in many formats without installing native tools", "you run a romhack distribution site and want users to patch ROMs online", "you want a lightweight vanilla-JS patcher that also works in Node.js"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/rompatcherjs", "repo": "marcrobledo/RomPatcher.js", "role": "main", "score": 69}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:03:54.149893+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T06:25:12.257360+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "fa4d7f03b7c0a1cb22b2f513aaf9e6ea262417105dd81d79a1dffbf5df3c71f7", "fetched_at": "2026-08-28T04:03:54.149893+00:00", "kind": "readme", "missing": false, "url": "https://github.com/marcrobledo/RomPatcher.js"}, {"content_hash": "fbcd97bcf872af92e66eaab3756f4e8ec697eae2488c5786649441bffa87410a", "fetched_at": "2026-08-29T12:31:57.371269+00:00", "kind": "homepage", "missing": false, "url": "https://www.marcrobledo.com/RomPatcher.js/"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 92, "longevity": 100, "rhythm": 23}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3459, "days_push": 53, "days_rel": 302, "gap_med": 367, "n_releases_24m": 2}, "score": 69, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}