I Built a Font Inspector Chrome Extension That Actually Identifies Japanese Fonts

A developer built Japanese Font Finder, a Chrome extension that identifies the actual Japanese font rendered on a page.

It inspects the clicked element’s rendered font, computed CSS, and web font source, and can scan a whole page for distinct fonts.

The extension resolves active fonts by comparing canvas text widths across candidate fonts, using Japanese test characters to improve CJK detection.

It can also infer major web font services from stylesheet URLs, including Google Fonts, Adobe Fonts, and Bunny Fonts.