GlyphProbe — Web Font Inspector & Audit

About

Find out which fonts a web page actually loaded — and which silently fell back — in one click.

Most "what font" tools just name the font under your cursor. GlyphProbe answers the question that actually matters to developers and designers: did the page's intended fonts LOAD, or is the browser quietly showing a fallback?

★ LOADED vs FELL BACK
GlyphProbe scans the whole page and, for every font-family it requests, tells you whether that font loaded, fell back to a system font, is a locally-installed font, or is a generic web-safe stack — each with a clear badge. The "fell back" flag is the thing no other extension shows you.

★ @FONT-FACE INVENTORY
See every @font-face the page declares: weights, styles, font-display, unicode-range, and the source — so you can audit exactly how a site serves its fonts.

★ TYPOGRAPHY ISSUE FLAGS
Missing or blocking font-display (FOIT risk), fonts that failed to load, weights that fall back, and font/weight bloat that hurts performance — surfaced automatically.

★ VARIABLE FONTS
Spots where variable-font axes are exercised across the page.

★ EXPORT THE AUDIT
One click produces a clean, printable report (Save as PDF) plus JSON and CSV — ready for a bug tracker, a client deliverable, or a typography audit.

★ HONEST ABOUT WHAT IT CAN'T SEE
Cross-origin stylesheets, web-safe fonts, and locally-installed look-alikes are clearly labeled "unverified" rather than guessed — no false "your font failed" alarms.

★ PRIVATE BY DESIGN
GlyphProbe reads the page only when you click, only locally. No account, no server of ours, and nothing is ever uploaded.

For front-end developers, designers, QA, and agencies auditing web typography.