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Hover any text to instantly identify the font, size, weight, color, spacing, CSS, source, and WCAG contrast. Copy CSS or Tailwind. Identify any font on any website — in one hover. Font Checker is a fast, lightweight typography inspector for developers, designers, and anyone curious about web type. Click the icon (or press Alt+Shift+F), hover any text, and instantly see exactly how it's styled. Click to pin a full breakdown. Features - Instant hover tooltip — detected font, weight, size, and color follow your cursor - Pinned detail panel — click any text for the full breakdown - Smart font detection — finds the actually rendered font from the CSS stack, not just the first name listed - Font source detection — Google Fonts, Adobe Fonts / Typekit, Fontshare, CDNFonts, Cloud.typography, Monotype, Bunny Fonts, and self-hosted @font-face - WCAG contrast grading — live ratio with AA / AAA pass/fail - Size conversion — px, rem, and em side by side - One-click copy — CSS, Tailwind classes, color (HEX), or full details - Smart + Advanced modes — selector, dimensions, text stats, font shorthand, stretch, variant, shadow, opacity, FontFace status - Shortcuts — Alt+Shift+F toggle · Esc exit · M more · C copy CSS · T copy Tailwind Runs entirely on your device inside an isolated Shadow DOM, so it never clashes with the page. No accounts, no servers, no data collection.
Jun 9, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.