SiteFontCheck

No extension free font checker analyzer for modern web design

Check fonts on popular websites

Fonts used by

mermaid.ai

Last analyzed 10/14/2026, 6:44:21 AM UTC

Curious about the design behind mermaid.ai?

SiteFontCheck scanned their live CSS architecture and identified 7 unique font families.

The website relies heavily on inter variable, inter, recursive variable, sans-serif for its main text elements, paired with inter variable, sans-serif and recursive variable, sans-serif as fallback options, and 4 additional.

7
unique font families
Primary font
inter variable, inter, recursive variable, sans-serif

Below is the precise map of font sizes, weights, and text elements used across their site.

Detected Fonts

7 found

inter variable, sans-serif

45

Products

recursive variable, sans-serif

39

Sign in

instrument serif, serif

25

You already think in systems.

inter, inter variable, inter, recursive variable, sans-serif

19

Prompt inside the canvas, drop in a doc, or write it in code — and watch the diagram build itself.

inter variable, inter, recursive variable, sans-serif

91

Or continue with

recursive variable, recursive, inter

36

90.6k

recursive variable, arial, sans-serif

4

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About SiteFontCheck

SiteFontCheck is a powerful no extension free font checker analyzer that analyzes any website to identify and display all fonts used in real-time. Simply enter a URL and instantly discover the typography behind your favorite websites.

About SiteFontCheck

No extension free font checker analyzer for modern web design. Detect, analyze, and explore fonts across any website with our powerful, user-friendly interface.