Font blocker

Right click on an annoying custom web font and click "Block custom font" to add it to the local database. The font will be blocked immediately. 1.22 More sync storage. Used to silently fail after ~100 fonts (8 KB). 1.21 Use Font API (document.fonts) too as well as @font-face to find custom fonts. 1.20 Manifest version 3 1.19 Removed broken Bold and Italic support. 1.18 Fixed unused message port, no more vague "Unchecked runtime.lastError" errors. 1.17 Better Bold and Italic support. WebExtensions compatibility for Firefox. 1.16 Fewer console messages. 1.15 Added preview before confirming. 1.14 Page/browser action support since Chrome 49+ =( 1.13 Font storage to sync (in Google profile, if you're synced). 1.12 Font name case bug (x2) 1.11 Font override order+ 1.10 Only show page action if actually blocking fonts, per page. Added document type check. 1.9 Mark fonts for global blocking, on all websites everywhere always. 1.8 Removed session blocking, because useless and buggy. 1.7 Annoying warning about CORS sessionStorage? Added import and export. 1.6 Stupid bug for new users. Sorry. 1.5 Added page action for link to options. Added (un)glimpse via page action contextmenu. Added session blocking. 1.4 Block fonts per website to keep inline CSS size down. Added sorting on options page. 1.3 Fixed bug with adding very first font. 1.2 Added metadata (website & date). Changed options UI. 1.1 Added unblocking.