Web Font Performance Calculator

Analyze font loading impact on your site performance

Select Fonts

Roboto

Open Sans

Inter

Lato

Montserrat

Poppins

Font Weights & Styles

Light (300)

Regular (400)

Medium (500)

Bold (700)

Italic

Configuration

Loading Strategy

Network Speed (Mbps)

Font Summary

Fonts Selected: 0

Total Variants: 0

Total Size: 0 KB

Compression (brotli): 0 KB

Load Performance

Load Time: 0 ms

FOUT Duration: 0 ms

Font Swap Time: 0 ms

Strategy: FOUT

FOUT

+ Faster visible text

- Text layout shift

FOIT

+ No layout shift

- Invisible text delay

Swap

+ Fast fallback shown

- Font still loads

Optional

+ Minimal impact

- Font may not load

Load Timeline

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