Audit
What are your web fonts costing you?
Drop in a URL. FontTest loads the page in a real browser and reports every web font, the payload, render-blocking, missing font-display, unused weights, and the Core Web Vitals the fonts are costing you.
5 free audits a day · no account needed
Total font payload
KB shipped, and what share of the page it is
Render-blocking
font CSS that delays first paint
font-display
missing swap → invisible text (FOIT)
Unused weights
loaded but never rendered
Format & subsetting
WOFF2, and variable-font opportunities
Core Web Vitals
the LCP / CLS the fonts are costing you