DICTIONARIES · LICENSES

Dictionary licenses and imports

Licenses for bundled, optional and user-imported dictionary data

In one line: the project code is MIT, but dictionary data is not MIT. The main Simplified dictionary is distributed as GPL-3.0 because it includes GPL-3.0-only data. Traditional, stroke and Wubi 86 are LGPL-3.0; Wubi 98 is Unlicense; Kangxi is MIT; the rare-character index uses the Unicode License. Optional imports CustomPinyinDictionary (CC BY-SA 4.0) and rime-wanxiang (CC BY 4.0) require attribution, a license link and a change notice when redistributed.

1. Dictionaries shipped with the installer

Dictionary	Contents	License and obligations
Simplified main luna.opid	Characters + common phrases + merged external data	GPL-3.0. Character layer from rime-luna-pinyin (LGPL-3.0); phrase layer includes rime-pinyin-simp (Apache-2.0); GPL-3.0-only data is also merged, so the product is distributed as GPL-3.0.
Traditional trad.opid	Traditional characters, phrases and a modern conversion layer	LGPL-3.0. rime-terra-pinyin (LGPL-3.0) + rime-pinyin-simp / OpenCC (Apache-2.0) + Unicode License + project-authored entries (MIT).
Stroke table stroke.opid	Five-stroke input and stroke lookup for rare characters	LGPL-3.0. From rime-stroke, pinned commit and compiled as-is.
Wubi 86 wubi86.opid	Wubi 86 code table	LGPL-3.0. From rime-wubi, pinned commit and converted.
Wubi 98 wubi98.opid	Wubi 98 characters + phrases	Unlicense. From 98wubi-tables, pinned commit and converted.
Kangxi kangxi.tsv	Readings for all Kangxi headwords	MIT. Keep Copyright (c) Shunshi.AI. Frequencies are project ranking constants, not upstream data.
Rare-character index rare_index.tsv	Radical / stroke-count index	Unicode License. From Unicode Unihan kRSUnicode and kTotalStrokes.

The emoji panel's common subset is adapted from OpenMoji and distributed under CC BY-SA 4.0 (credit the OpenMoji project and contributors). Kaomoji come from rime_kaomoji_dict (MIT, Copyright (c) 2023 aoguai).

2. Optional imported dictionaries (not bundled)

These dictionaries are downloaded, converted and imported by the user. The project repository does not contain them and does not download them at build time. Truncated 200k-entry files are available for direct import:

CustomPinyinDictionary 200k (about 2.9 MB)
rime-wanxiang 200k (about 4.9 MB)

Data	Upstream	License and obligations
CustomPinyinDictionary	wuhgit/CustomPinyinDictionary	CC BY-SA 4.0. Credit dictionary data by wuhgit and contributors, link the license and state changes. Adapted data redistributed must remain under CC BY-SA 4.0 (or a compatible license), with no extra restrictions.
rime-wanxiang	amzxyz/rime-wanxiang	CC BY 4.0. Credit rime-wanxiang data by amzxyz and contributors, link the license and state changes. There is no ShareAlike requirement.

The conversion scripts are MIT; the converted data keeps its upstream license. The header comment in each output file is the attribution and change notice — do not remove it. CustomPinyinDictionary has no usable frequencies, so imported entries use the default frequency for ranking.

3. Import limits per client

Android / macOS: at most 8 MiB / 200,000 entries per file. Android also limits active imports to 8 files and 500,000 entries in total. Use the 200k files above; full-size dictionaries are rejected.
Linux (fcitx5) / Windows (TSF): dictionaries are scanned directly from the dictionary directory, with no 8 MiB / 200k limit, so full-size files work.
iOS / HarmonyOS: no dictionary import entry yet.

Imported entries participate in candidate ranking: duplicate words take the larger of the main-dictionary frequency and the import boost, while unique words receive the boost. Large dictionaries can change candidate order; disable or delete them at any time in Settings.

4. Redistribution notes

When distributing installers, follow each bundled dictionary's license and include the corresponding source and license texts for GPL-3.0 / LGPL-3.0 data.
When distributing user-generated TSV files, keep the attribution and change notice header and link the upstream license.
Project-drawn pet and emoji assets are proprietary; see Visual asset license.