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Tech riderRev. 29 Sept 2026

rom-weaver

Ch 037.3of 20 ROM Patching Software
  1. 1Runs onLinux, Mac, self-hosted, Web, Windows
  2. 2CostsFree plan
  3. 3Patch formatsIPS, IPS32, SOLID, BPS, UPS, VCDIFF, xdelta, GDIFF, HDiffPatch/HPatchZ, APS, APSGBA, RUP, PPF, PAT, EBP, BDF/BSDIFF40, BSP, MOD, DLDI, DPS, DCP
  4. 4Supported platformscross platform
  5. 5Batch patchingYes
  6. 6Checksum verificationYes
  7. 7Original backupYes
  8. 8Command-line supportYes
8 lines stated Written from the maker's own pages: rom-weaver.com
Visit site Alternatives
The rom-weaver homepage

Overview

rom-weaver is ranked #3 of 20 in ROM patching software on Specifiction. It runs on Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

rom-weaver plans and pricing

All plans
Free and open-source Free No account required · browser and command-line versions rom-weaver.com · 29 Sept 2026

Compared on ROM patching software

Free plan
Yesrom-weaver.com
Patch formats
IPS, IPS32, SOLID, BPS, UPS, VCDIFF, xdelta, GDIFF, HDiffPatch/HPatchZ, APS, APSGBA, RUP, PPF, PAT, EBP, BDF/BSDIFF40, BSP, MOD, DLDI, DPS, DCProm-weaver.com
Supported platforms
cross_platformrom-weaver.com
Batch patching
Yesrom-weaver.com
Checksum verification
Yesrom-weaver.com
Original backup
Yesrom-weaver.com
Command-line support
Yesrom-weaver.com

Facts

Purpose
rom-weaver patches, converts, and bundles ROMs and disc images using the same engine in its browser and command-line versions.rom-weaver.com · 29 Sept 2026
Patch workflows
It can apply patches, create patches from ROMs, and package ordered patch workflows as reusable bundles.rom-weaver.com · 29 Sept 2026
Supported patch formats
The support matrix lists formats including IPS, IPS32, BPS, UPS, xdelta, PPF, and others for applying or creating patches, with some format-specific limits.rom-weaver.com · 29 Sept 2026
File conversion
It supports probing and extracting many archive and compressed image formats, including ZIP, 7z, RAR, CHD, RVZ, and Z3DS; creation support varies by format.rom-weaver.com · 29 Sept 2026
Cheats
Users can bake supported ROM cheat codes into ROMs or save selected database cheats as patch files; runtime-memory cheats are marked unsupported.rom-weaver.com · 29 Sept 2026
Save editing
The Save Editor supports specified Pokémon save layouts and The Legend of Zelda: A Link to the Past SRAM, with recognition limits listed by game.rom-weaver.com · 29 Sept 2026
Local processing
The browser processes files with WebAssembly on the device, and the CLI reads and writes local paths; the maker says ROMs, patches, and results are not uploaded to its server.rom-weaver.com · 29 Sept 2026
Privacy details
The webapp says it has no analytics, advertising, or tracking scripts and sets no advertising or tracking cookies; it stores app data in browser storage.rom-weaver.com · 29 Sept 2026
Offline use
The maker says the browser app works offline after it has cached the app.rom-weaver.com · 29 Sept 2026
Integration
Hosts can preload browser workflows with bundle, ROM, and patch URLs or ingest files from same-origin OPFS storage; remote sources must allow the app origin through CORS.rom-weaver.com · 29 Sept 2026
Self-hosting
The webapp is a static app that can be self-hosted from a Docker image or static files, and requires HTTPS outside localhost.rom-weaver.com · 29 Sept 2026
CLI platforms
The CLI provides release binaries for macOS, Linux, and Windows, with architecture variants listed on its install page.rom-weaver.com · 29 Sept 2026
Support
The maker directs bugs, format requests, and questions to the GitHub issue tracker and says security reports have a separate process.rom-weaver.com · 29 Sept 2026
License and maker
The project is written by Brandon Casey and contributors and is licensed under GNU AGPL v3.0 or later.rom-weaver.com · 29 Sept 2026

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Where it ranks on Specifiction

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