How Browsers Actually Pick a Font — and How Developers Can Detect It
A developer article on DEV Community explains that CSS's getComputedStyle method returns a font priority list, not the font actually rendered by the browser. The browser selects the first available font in the stack that contains a glyph for the character being displayed, a distinction that matters especially for Japanese text. Fonts like Hiragino, Yu Gothic, and Noto Sans JP differ visibly in weight and style, meaning a site designed on macOS can look different on Windows. Developers can detect the rendered font using canvas-based text measurement or the modern CSS Font Loading API via document.fonts. The author built a tool called Japanese Font Finder to automate this detection process.
This is an AI-generated summary. ShortSingh links to the original source for the complete article.
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