Credits & Licenses
Unicode Viewer is a thin UI over decades of careful work by many people. The fonts, data tables, and specifications that make accurate CJK variant rendering possible are listed below.
Fonts
By: Koichi Kamichi and GlyphWiki contributors
Base CJK glyphs and every Ideographic Variation Sequence registered in Unicode IVD 2025-07-14 — including hard-to-find variants like 邉 E011E (Hanyo-Denshi TK01090330). Using a single typeface for every IVS means overlays in this tool compare structural differences rather than type-design drift. Glyphs are generated from GlyphWiki via the KAGE system.
License: CC0 1.0 (Public Domain Dedication)
By: Information-technology Promotion Agency, Japan (IPA)
SVS (U+FE00-U+FE0F) overlay — Jigmo ships no SVS table, so IPAmj's Standardized Variation Sequence entries are layered on top (e.g. CJK punctuation 、︀ 、︁ 。︀).
License: IPA Font License v1.0
By: Google / Noto Project
Mathematical-symbol SVS variants (e.g. ∅ U+FE00).
License: SIL Open Font License 1.1
Data & Specifications
By: The Unicode Consortium
Code point names, categories, blocks, grapheme break properties, and standardized variation sequences (SVS).
License: Unicode License
By: Ideographic Research Group (IRG) / Unicode Consortium
IRG source flags (J/G/T/K) showing which CJK characters come from which national sources.
License: Unicode License
By: The Unicode Consortium
Registered IVS sequences across Adobe-Japan1, Hanyo-Denshi, and Moji_Joho collections.
License: Unicode License
By: WHATWG
Legacy encoding indices (Shift_JIS / GBK / Big5 / EUC-KR and ~20 more) as used by modern browsers.
License: Creative Commons Attribution 4.0
By: IPA / Moji Joho Kiban Project
MJ number assignments and the Moji_Joho IVD collection.
License: CC BY-SA 2.1 JP
Thanks
We are deeply grateful to the Information-technology Promotion Agency of Japan, Adobe Type, the Unicode Consortium, WHATWG, the Moji Jōhō Kiban Project, Koichi Kamichi, and the hundreds of volunteer contributors at GlyphWiki and elsewhere. This tool is only as useful as the work they have made freely available.