Japanese typographic standards undergo periodic national reforms. The JIS X 0213:2004 standard modernized numerous kanji glyph stroke forms, yet classical publishing houses, newspapers, and archival repositories frequently require the older JIS90 orthographic standard. The OpenType jp90 (JIS90 Forms) feature tag substitutes JIS2004 kanji forms with their JIS90 precursors. Safari Web Inspector provides native typographic inspection tools to preview and audit JIS90 glyph substitutions on macOS.
Typographical Role of JIS90 Glyphs
In modern macOS fonts (such as Hiragino Mincho and Hiragino Sans), default kanji follow the JIS2004 standard. Specifying font-feature-settings: "jp90" 1; activates Apple’s CoreText substitution routines, rendering authentic pre-2004 stroke structures without requiring separate legacy font files.
Configuring JIS90 Glyphs in CSS
Implement JIS90 typography in your stylesheet:
.jis90-classical {
font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
font-feature-settings: "jp90" 1;
font-variant-east-asian: jis90;
line-height: 1.8;
}Inspecting Features in Safari Web Inspector
- Open the webpage containing Japanese kanji in Safari.
- Right-click the target paragraph and choose Inspect Element.
- Switch to the Font tab in Web Inspector’s right pane.
- Locate JIS90 Forms (jp90) under the Features list.
- Toggle the switch to observe live kanji stroke alterations rendered by CoreText across the character sequence.
Accessible Semantic Text Integrity
Because OpenType substitutions operate exclusively at the graphic layout layer, the accessibility tree retains standard semantic text representation, ensuring optimal search indexing and screen reader performance.