Font performance
Font Loading CSS Advisor
Paste @font-face rules or font link tags to check preload, font-display, file format, and subsetting before they delay LCP or cause CLS.
Waiting0/100
Font CSS or HTML
Paste @font-face blocks, Google Fonts links, @import rules, or a document head. Analysis runs locally as you type.
CSS stays in this browser. It is not uploaded.
Detected families
Grouped from @font-face and remote font stylesheets.
Paste CSS or HTML that declares fonts to see the inventory.
Recommended @font-face
Self-host WOFF2, set font-display, and keep a latin unicode-range. Adjust paths to match your files.
Recommended preload
Preload at most two text fonts. Always include crossorigin for font files.