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Tech riderRev. 21 Sept 2026

Rom Patcher JS

Ch 136.6of 20 ROM Patching Software
  1. 1Runs onself-hosted, Web
  2. 2CostsNot stated by the maker
  3. 3Patch formatsIPS, UPS, APS, BPS, RUP, PPF, EBP, BSDiff, Paper Mario Star Rod, VCDiff
  4. 4Supported platformsweb
  5. 5Checksum verificationYes
  6. 6Command-line supportYes
5 lines stated Written from the maker's own pages: marcrobledo.com
Visit site Alternatives
The Rom Patcher JS homepage

Overview

Rom Patcher JS is ranked #13 of 20 in ROM patching software on Specifiction. It runs on Self-hosted, Web.

Compared on ROM patching software

Free plan
Yesmarcrobledo.com
Patch formats
IPS, UPS, APS, BPS, RUP, PPF, EBP, BSDiff, Paper Mario Star Rod, VCDiffmarcrobledo.com
Supported platforms
webmarcrobledo.com
Checksum verification
Yesmarcrobledo.com
Command-line support
Yesmarcrobledo.com

Facts

Purpose
Rom Patcher JS applies and creates patches for retro video game ROMs in a web browser.marcrobledo.com · 3 Oct 2026
ROM checksums
The app shows a ROM’s CRC32, MD5, and SHA-1 before patching.github.com · 3 Oct 2026
Patch creation
It can create patches as well as apply them.github.com · 3 Oct 2026
File handling
It can automatically unzip files and remove ROM headers before patching.github.com · 3 Oct 2026
Browser support
The project says it runs in modern web browsers, including mobile browsers.github.com · 3 Oct 2026
Command line
The project can also run in Node.js and provides commands for patching and creating patches.github.com · 3 Oct 2026
Customization
The project can be customized and embedded in a website to provide an online patcher for that site’s patches.github.com · 3 Oct 2026
Known users
The project lists Romhacking.net, Smash Remix, Radical Red, and other sites as known users.github.com · 3 Oct 2026
Support and funding
The product page requests optional donations to help cover increased infrastructure costs.marcrobledo.com · 3 Oct 2026
Version
The product page identifies the app as version 3.3.1.marcrobledo.com · 3 Oct 2026
Other features
It can remove headers before patching and automatically unzip files.github.com · 4 Oct 2026
Developer use
The project can be customized and embedded in a website to provide an online patcher for a site’s patches.github.com · 4 Oct 2026
Integrations
The repository lists Romhacking.net, Smash Remix, Radical Red, and other sites as users of Rom Patcher JS.github.com · 4 Oct 2026
License
The repository includes a LICENSE file, but the opened repository page does not state the license terms.github.com · 4 Oct 2026
Support and donations
The official app page asks for donations to help cover increased infrastructure costs.marcrobledo.com · 4 Oct 2026

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Where it ranks on Specifiction

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Sources