FontViz

FontViz is a browser extension that simplifies typography QA. With a single click it lists every font family, size and HTML tag on a page, highlights text matching chosen settings, and lets you compare styles side‑by‑side. It provides detailed metrics—character widths, line‑height, kerning—and SEO‑friendly tag analysis for proper heading use. Capture annotated screenshots, verify cross‑browser rendering, and instantly share findings with your team. Regular updates keep it fast and compatible.