Hiragino Sans W9 -

As the "heaviest" member of the family, Hiragino Sans W9 is optimized for high-impact visual communication.

Note: On Windows machines without Hiragino, this gracefully degrades to Microsoft YaHei (which has a comparable heavy weight) or Yu Gothic UI. hiragino sans w9

⚠️ to another bold sans-serif (e.g., Microsoft YaHei or Arial Black). As the "heaviest" member of the family, Hiragino

Despite its power, Hiragino Sans W9 demands respect and restraint. Its primary limitation is a lack of legibility at small sizes. Below 18 points (or 24 pixels on screen), the choked counters can cause characters to become indistinct, particularly for complex kanji with many strokes. Furthermore, setting long strings of text in W9 creates a visually fatiguing "wall of ink" that destroys readability. The weight also interacts unpredictably with certain paper stocks and low-resolution screens, where ink bleed or pixel compression can cause characters to fill in entirely. Consequently, effective use of W9 requires ample spacing (tracking) and careful consideration of background color and texture. Despite its power, Hiragino Sans W9 demands respect

When using Hiragino Sans W9 on the web, it is best practice to include both the English and Japanese names to ensure cross-browser compatibility.