Japanese Font Inspector

Stop guessing which fonts render your Japanese text. Japanese Font Inspector shows the true fallback chain with script separation.

Japanese Font Inspector is a Chrome extension that identifies the actual font rendering Japanese text on any webpage — not just the declared CSS stack, but the real fallback chain. When Japanese and Latin characters appear on the same line, they very often render with different physical fonts via the browser's own unicode-range fallback. This extension shows you exactly which font is actually being used for each script type, with confidence levels for each fallback estimate. Every feature works fully for free, forever. A one-time Pro purchase ($5) unlocks advanced features: full-page font audit, web-font service detection, and unlimited searchable history.