ffpr

Node.js library for decoding and encoding Final Fantasy Pixel Remaster save files from Nintendo Switch, PC and PlayStation.

• All six games: Final Fantasy I–VI.
• Saves from Nintendo Switch, PC and PlayStation through one API.
• Save slots, bestiary and game settings.
• Nested JSON strings are unpacked into a plain object tree and packed back.
• TypeScript types for the save structure: characters, jobs, abilities, items, party, map, story flags and more.
• Works with files or with buffers.
• Two runtime dependencies, no native addons.

Saves can also be edited in the browser with an editor built on this library. Files are decoded locally and are not uploaded.

Usage

import { load, save } from 'ffpr';

const data = await load('path/to/save', 'pc');
data.userData.owendGil = 9999999;
await save('path/to/save', data, 'pc');

All functions are async. type is the platform: 'switch', 'pc' or 'playstation', 'switch' by default.

• load(filename, type?) reads and decodes a save file.
• save(filename, data, type?) encodes data and writes it to a file.
• unpack(buffer, type?) decodes file contents from a Buffer or a Uint8Array.
• pack(data, type?) encodes data into a Buffer.

load and unpack throw an error if the file is not a save of the given platform.

All functions and types of save data are described in the API reference.

Installation

npm i ffpr

or

pnpm add ffpr

or

yarn add ffpr

or

bun add ffpr

Data

A save file is JSON in which nested objects are stored as JSON strings, several levels deep. load and unpack parse them all into a single object tree, save and pack encode them back. pictureData is decoded from base64 into a Buffer.

Key names are exactly as the game writes them, including the developers' typos: owendGil, importantOwendItemList, owendCrystalFlags, ownedKeyWaordList, numberOfButtles, resolutionHight and others. These are not mistakes in the library, do not "fix" them: the game will not recognize renamed keys.

The structure is described by TypeScript types: Master (save slot), Bestiary and Config (settings). load returns their union, so cast the result:

import { load } from 'ffpr';
import type { Master } from 'ffpr';

const data = (await load('path/to/save', 'pc')) as Master;

Formats

• Switch: JSON compressed with raw deflate and encrypted with Rijndael-256-CBC.
• PC: the same, encoded in base64.
• PlayStation: plain JSON.

Support

If something doesnt work, or you just wanna talk to the creator or his mom, write @arelive. There also accepted kicks from volunteer project managers.

https://github.com/arebaka/ffpr/issues