Large Webfont Loading Perf

Watch how large webfonts impact page loading performance

Loading Status

Page Load: Loading...
Fonts Load: Loading...
Load Time: Measuring...

Font Comparison

System Font (Fast)

This text uses system fonts that are already available on your device. It loads instantly without any network requests.

The quick brown fox jumps over the lazy dog. 1234567890

Noto Sans (Web Font)

This text uses Noto Sans loaded from Google Fonts. Notice the delay before the custom font appears.

The quick brown fox jumps over the lazy dog. 1234567890

Jigmo (Web Font)

This text uses the Jigmo font. It is a free Kanji font, including 141,457 glyphs.

一一丁丁丂丂七七丄丄丅丅万万万􀉲􀉳丈丈􀉴丈􀉵三三上上

Network Simulation

Open your browser's Developer Tools (F12) → Network tab → Throttling to simulate different connection speeds:

Fast 4G Slow 4G 3G

Refresh the page to see how font loading performance changes with different network conditions.