marcrobledo/RomPatcher.js
An IPS/UPS/APS/BPS/RUP/PPF/xdelta ROM patcher made in HTML5. observed · 2026-08-28
Health v2 · maintenance only
69/100
- Activity 92
- Release rhythm 23
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 367
- age_days: 3459
- days_rel: 302
- days_push: 53
- n_releases_24m: 2
Adoption not part of the score
1181 stars · 187 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
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.
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
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
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
Facets
application · maturity stable
file-system cli developer-tools gaming-tools files web-development browser cli cross-platform rom-patcher romhacking ips ups bps ppf xdelta vanilla-js embeddable nodejs web-server
2 sources
- readme: https://github.com/marcrobledo/RomPatcher.js · fetched 2026-08-28 · fa4d7f03b7c0
- homepage: https://www.marcrobledo.com/RomPatcher.js/ · fetched 2026-08-29 · fbcd97bcf872
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| marcrobledo/RomPatcher.js | main | 69 |
For agents
markdown · JSON · MCP: product_card(name="marcrobledo/RomPatcher.js")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem