Blitline has a set of supported open source fonts. These are available in Blitline functions that use font-face, such as annotate or caption.

You can view the fonts here:

https://s3.amazonaws.com/img.blitline/fonts/master.jpg

Here is a list of the installed fonts:

"AbjectFailure”,
“AdineKirnberg”,
“AdineKirnbergAlternate”,
“AerojonesNF”,
“AirstreamNF”,
“Alex-Brush”,
“Aller”,
“Aller-Bold”,
“Aller-Bold-Italic”,
“Aller-Display”,
“Aller-Italic”,
“Aller-Light”,
“Aller-Light-Italic”,
“Allerton”,
“Allura”,
“Alpenstube”,
“Alpine”,
“AlteCaps”,
“Amatic-Bold”,
“Amatic-SC-Regular”,
“Ambrosia”,
“AmericanText”,
“AmsterdamTangram”,
“AnagramNF”,
“Andale-Mono”,
“Aneirin”,
“Angelou”,
“AnglicanText”,
“Ani”,
“Arabella”,
“ArbuckleFat”,
“ArgosGeorge”,
“ArgosGeorgeContour”,
“Arial”,
“Arial-Black”,
“Arial-Bold”,
“Arial-Bold-Italic”,
“Arial-Italic”,
“Arizonia”,
“AtlantisFound”,
“Azteka”,
“BackstagePassNF”,
“BalaCynwydNF”,
“Bebas”,
“Becker”,
“BeckerInline”,
“BeckerShadow”,
“BellhopNF”,
“Belshaw”,
“BenjaminFranklin”,
“BeteNoirNF”,
“BigBook-Heavy”,
“BillboardCollege”,
“BillboardShadow”,
“BittersweetNF”,
“BlackJackRegular”,
“Blackletter-ExtraBold”,
“BlackletterShadow”,
“BlackwoodCastle”,
“BlackwoodCastleShadow”,
“BlockedArtistry”,
“Brazilia”,
“BreakingNews”,
“BrianJames-CondensedBold”,
“BrianJamesContour”,
“BrockScript”,
“Cabaret”,
“CabaretContour”,
“CabaretShadow”,
“CAC-Champagne”,
“CalamityJaneNF”,
“CampFire”,
“Cantarell-Bold”,
“Cantarell-Bold-Oblique”,
“Cantarell-Oblique”,
“Cantarell-Regular”,
“Cantebriggia”,
“Canterbury”,
“Capture-it”,
“Capture-it-2”,
“Cardiff”,
“CaslonCalligraphicInitials”,
“Cavalier”,
“Caviar-Dreams”,
“Caviar-Dreams-Bold”,
“Caviar-Dreams-Bold-Italic”,
“Caviar-Dreams-Italic”,
“CelticHand”,
“ChanticleerRomanNF”,
“Chelsea”,
“Chi-TownNF”,
“ChickenScript”,
“ChipperfieldandBailey”,
“ChippewaFallsNF”,
“ChockABlockNF”,
“ChocolateBoxDecorative”,
“ChocolateDropsNF”,
“ChunkFive-Roman”,
“CircuitBoredNF”,
“CircusOrnate”,
“Claritty”,
“Cleaver’s_Juvenia”,
“Cleaver’s_Juvenia_Blocked”,
“Clerica-Medium”,
“Coaster-Black”,
“CoasterPoster”,
“Colaborate-Bold”,
“Colaborate-Light”,
“Colaborate-Medium”,
“Colaborate-Regular”,
“Colaborate-Thin”,
“ColtaineNo2”,
“Comic-Sans-MS”,
“Comic-Sans-MS-Bold”,
“ComicXT”,
“CongaLineNF”,
“CopaseticNF”,
“CopperCanyonWBW”,
“Courier-New”,
“Courier-New-Bold”,
“Courier-New-Bold-Italic”,
“Courier-New-Italic”,
“CoventryGarden”,
“CoventryGardenNF”,
“Creampuff”,
“CuppaJoe”,
“DaddyLonglegsNF”,
“Dampfplatz-Demibold”,
“DampfplatzShadow-Heavy”,
“DampfplatzSolid-Heavy”,
“DancingDonutsNF”,
“DancingScriptOT”,
“Daniel”,
“Daniel-Black”,
“Daniel-Bold”,
“DayPosterBlackNF”,
“DeepWoodsInitials”,
“DejaVu-Sans”,
“DejaVu-Sans-Bold”,
“DejaVu-Sans-Mono”,
“DejaVu-Sans-Mono-Bold”,
“DejaVu-Serif”,
“DejaVu-Serif-Bold”,
“DeStencilNF”,
“DevinneSwash”,
“DevinneSwashShadow”,
“Digitrax”,
“DingDongDaddyoNF”,
“Direction”,
“DistressedOut”,
“DobkinScript”,
“DosEquisNF”,
“Dover-Heavy”,
“DoverContour”,
“DoverHeights”,
“DoverHeights-Bold”,
“DoverShadow”,
“Draughtsman”,
“Draughtsman-Bold”,
“Drive-ThruNF”,
“Droid-Sans”,
“Droid-Sans-Bold”,
“DrumagStudioNF”,
“DSFattyContour”,
“DSFattyShadow”,
“DSFetteGotisch”,
“dSpenser”,
“dSpenser-Bold”,
“dSpenserBlack”,
“DubbaDubbaNF”,
“DueDate”,
“Dundalk”,
“DundalkEmbossed”,
“DundalkHandDrawn”,
“DustyRoseNF”,
“DutchInitials”,
“Duvall”,
“Duvall-Bold”,
“Duvall-CondensedBold”,
“Duvall-CondensedRegular”,
“DuvallOutline”,
“DuvallSmallCaps”,
“DuvallSmallCaps-Bold”,
“DuvallSmallCaps-CondensedBold”,
“DuvallSmallCaps-CondensedRegula”,
“DuvallSmallCapsOutline”,
“DymaxionScript”,
“EgyptienneZierinitialien”,
“ElegantCapitals”,
“ElegantCapitalsII”,
“EmbossedBlack”,
“EmbossedBlack-UltraexpandedRegu”,
“EmbossedGermanica”,
“EmporiumCapitals”,
“EnglishTowne-Medium”,
“EngravierInitials”,
“Erasmus”,
“Erasmus-Bold”,
“ErasmusInline”,
“ErasmusInline-Bold”,
“Eredel”,
“Estelle”,
“Existence-Light”,
“Existence-Stencil-Light”,
“Existence-Unicase-Light”,
“Exo-Black”,
“Exo-Black-Italic”,
“Exo-Bold”,
“Exo-Bold-Italic”,
“Exo-DemiBold”,
“Exo-DemiBold-Italic”,
“Exo-ExtraBold”,
“Exo-ExtraBold-Italic”,
“Exo-ExtraLight”,
“Exo-ExtraLight-Italic”,
“Exo-Italic”,
“Exo-Light”,
“Exo-Light-Italic”,
“Exo-Medium”,
“Exo-Medium-Italic”,
“Exo-Regular”,
“Exo-Thin”,
“Exo-Thin-Italic”,
“Express”,
“FacetsNF”,
“FancyPantsNF”,
“Faranvale”,
“FargoFaroNF”,
“FashionVictim”,
“Festival”,
“Festival-Bold”,
“FestivalFlourish”,
“FestivalFlourish-Bold”,
“FeteAccompliNF”,
“FetteEgyptienne”,
“FlaemischeKanzleischrift”,
“FloranaInitials”,
“FlutedGermanica”,
“FoliarInitials”,
“Forelle”,
“Frangelica”,
“FreamePlain”,
“Full-TiltBoogieNF”,
“FunkyRundkopfNF”,
“Gabrielle”,
“GanzGrobeGotisch-Extrabold”,
“Garavol”,
“gargi”,
“Garidelli”,
“GenzschEtHeyse”,
“GenzschEtHeyseAlternate”,
“Georgia”,
“Georgia-Bold”,
“Georgia-Bold-Italic”,
“Georgia-Italic”,
“GingerPeachyNF”,
“Glastonbury”,
“Glastonbury-UltraexpandedRegula”,
“GlastonburyShadow”,
“GlastonburyShadow-Ultraexpanded”,
“GoodDog”,
“GradoGradooNF”,
“GramophoneNF”,
“GramophoneShadedNF”,
“GrandHotel-Regular”,
“Grantham”,
“Grantham-Bold”,
“Grantham-CondensedBold”,
“Grantham-CondensedLight”,
“Grantham-CondensedRegular”,
“Grantham-Light”,
“GranthamOutline”,
“GranthamShadow”,
“Graphis-Extrabold”,
“Graphis-ExtraboldItalic”,
“Grasshopper”,
“Great-Vibes”,
“GreatLakesShadowNF”,
“GrenadierNF”,
“Grimeswade”,
“Grinder”,
“GrungeFace”,
“GuinnessExtraStoutNF”,
“GulfstreamNF”,
“Hackles”,
“HalftoneBlack-Demibold”,
“HamburgerHeavenNF”,
“Handskrib”,
“HeavyTrippNF”,
“Helena”,
“Helena-Bold”,
“Helena-Outline”,
“Helena-Squat”,
“Helena-UltraexpandedRegular”,
“Hemmerhaus”,
“HenryMorganHand-Medium”,
“HentzauInitials”,
“HeraldSquareNF”,
“HeraldSquareTwoNF”,
“Hercules”,
“HighFiveJiveNF”,
“HighFiveNF”,
“HobbyHorseNF”,
“HolyRavioliNF”,
“Hominis”,
“Honduro”,
“HoneyScript-Demibold”,
“HoneyScript-Ultralight”,
“HornswoggledNF”,
“Impact”,
“Imperator”,
“Imperator-Bold”,
“ImperatorBronze”,
“ImperatorBronzeSmallCaps”,
“ImperatorPlaque”,
“ImperatorSmallCaps”,
“ImperatorSmallCaps-Bold”,
“IncisedBlack”,
“IncisedBlackWide”,
“IndochineNF”,
“IndubitablyNF”,
“Infula”,
“IronickNF”,
“Jacobi”,
“JacobiStriped”,
“Jamrul”,
“Jeepers”,
“JoostAMillionaireNF”,
“Journal”,
“JunebugStompNF”,
“JungleFeverInlineNF”,
“JungleFeverNF”,
“Karnevale”,
“KaushanScript-Regular”,
“Kedage-Bold”,
“Kedage-Normal”,
“Kefario”,
“KelmscottRomanNF”,
“KelmscottRomanNF-Bold”,
“KerfuffleNF”,
“Kildor”,
“Killigrew”,
“KilligrewStacatto”,
“Kindertype-SemiBold”,
“Kirkingham”,
“KismetNF”,
“Koloss”,
“KolossContour”,
“KurvaceousNF”,
“LabyrinthNF”,
“LackawannaWeedNF”,
“Laconick-NormalA”,
“LaffRiotNF”,
“LagniappeInlineNF”,
“LakeshoreDriveNF”,
“LakeWobegonNF”,
“Landsdowne”,
“LandsdowneShadowed”,
“Lato-Black”,
“Lato-Black-Italic”,
“Lato-Bold”,
“Lato-Bold-Italic”,
“Lato-Hairline”,
“Lato-HairlineItalic”,
“Lato-Heavy”,
“Lato-Heavy-Italic”,
“Lato-Italic”,
“Lato-Light”,
“Lato-LightItalic”,
“Lato-Medium”,
“Lato-Medium-Italic”,
“Lato-Regular”,
“Lato-Semibold”,
“Lato-Semibold-Italic”,
“Lato-Thin”,
“Lato-Thin-Italic”,
“Laurendra”,
“LeagueGothic-CondensedItalic”,
“LeagueGothic-CondensedRegular”,
“LeagueGothic-Italic”,
“LeagueGothic-Regular”,
“LearningCurveDashedPro”,
“LearningCurvePro”,
“Lewisham”,
“Lewisham-Bold”,
“Lewisham-CondensedRegular”,
“Lewisham-UltraexpandedRegular”,
“LewishamDropCaps”,
“LewishamShadowed”,
“LewishamShadowed-UltraexpandedR”,
“LewishamShadowII”,
“LewishamStripe-Bold”,
“Liberation-Mono”,
“Liberation-Mono-Bold”,
“Liberation-Mono-Bold-Italic”,
“Liberation-Mono-Italic”,
“Liberation-Sans”,
“Liberation-Sans-Bold”,
“Liberation-Sans-Bold-Italic”,
“Liberation-Sans-Italic”,
“Liberation-Sans-Narrow”,
“Liberation-Sans-Narrow-Bold”,
“Liberation-Sans-Narrow-Bold-Italic”,
“Liberation-Sans-Narrow-Italic”,
“Liberation-Serif”,
“Liberation-Serif-Bold”,
“Liberation-Serif-Bold-Italic”,
“Liberation-Serif-Italic”,
“Lightfoot”,
“Lightfoot-Bold”,
“Lightfoot-ExpandedRegular”,
“Lightfoot-ExtracondensedRegular”,
“LightfootFluted-ExpandedRegular”,
“LightfootOutline-ExpandedRegula”,
“LightfootShadowed”,
“Lighthaus”,
“Likhan”,
“Lintsec”,
“LisburneInitials”,
“LittleDeuceCoupeNF”,
“LittleLordFontleroyNF”,
“LittleRickeyNF”,
“Lobster1.3”,
“LobsterTwo”,
“LobsterTwo-Bold”,
“LobsterTwo-BoldItalic”,
“LobsterTwo-Italic”,
“Logger”,
“Lohit-Assamese”,
“Lohit-Bengali”,
“Lohit-Devanagari”,
“Lohit-Gujarati”,
“Lohit-Tamil”,
“LongIslandAntiqua”,
“LongIslandContour”,
“LongIslandShadow”,
“LostWages”,
“Louvaine”,
“LuncheonetteNF”,
“MadisonSquareNF”,
“MagicLanternNF”,
“Mallige-Bold”,
“Mallige-Normal”,
“Mangage”,
“MarchMadnessNF”,
“MarkerArt-SemiBold”,
“MarketingScript”,
“MarketingScriptInline”,
“MarketingScriptShadow”,
“MaterhornNF”,
“MediaevalCaps”,
“Meera”,
“MerriGables”,
“MetropolisNF”,
“MetroRetroNF”,
“MiddleEarthNF”,
“MidlandRailNF”,
“MidlandRailShadowNF”,
“MiltonBurlesqueNF”,
“MinstrelPosterNF”,
“MinstrelPosterTwoNF”,
“Mitra-Mono”,
“ModernTypographyNF”,
“MondoRedondoNF”,
“MonicasSalonNF”,
“MonicasSalonShadowNF”,
“MonkeyBusinessNF”,
“MonkeyFingersNF”,
“Montague”,
“MontereyPopsicleNF”,
“Morgan”,
“MorganTwentyNine”,
“Muchaka”,
“Mukti-Narrow”,
“Mukti-Narrow-Bold”,
“MunchausenNF”,
“MyFault”,
“MyGalSwoopyNF”,
“MyType”,
“NamesakeNF”,
“Neptune8-Black”,
“Newchester”,
“NickelodeonNF”,
“NickerbockerNF”,
“NickleyNF”,
“Nickodemus-Extremus”,
“NightAtTheOperaNF”,
“Nightcap”,
“NipAndTuckNF”,
“NorthFace”,
“NotMaryKateNF”,
“Nubian”,
“NubianShadow”,
“Nuggles”,
“OldeEnglish”,
“OldEnglishFive”,
“OldGateLaneNF”,
“OldgateLaneOutline”,
“Open-Sans”,
“Open-Sans-Bold”,
“Open-Sans-Bold-Italic”,
“Open-Sans-Extrabold”,
“Open-Sans-Extrabold-Italic”,
“Open-Sans-Italic”,
“Open-Sans-Light”,
“Open-Sans-Light-Italic”,
“Open-Sans-Semibold”,
“Open-Sans-Semibold-Italic”,
“ori1Uni-Medium”,
“OrionRadioNF”,
“Ostrich-Sans-Black”,
“Ostrich-Sans-Bold”,
“Ostrich-Sans-Dashed-Medium”,
“Ostrich-Sans-Light”,
“Ostrich-Sans-Medium”,
“Ostrich-Sans-Rounded-Medium”,
“Oswald-Bold”,
“Oswald-Light”,
“OswaldStencil-Bold”,
“OurGangNF”,
“OwahTaguSiamNF”,
“Pacifico”,
“PackardAntique”,
“PackardClipperNF”,
“ParkLaneNF”,
“PasticheNF”,
“PayzantPenNF”,
“Penelope”,
“Perisphere”,
“Persippiny”,
“PhattPhreddyNF”,
“PilsenPlakat”,
“PinballWhizNF”,
“PlatonickNF”,
“PleasinglyPlumpNF”,
“PlugNickelNF”,
“PointsWestNF”,
“Polo”,
“PonsonbyNF”,
“PopularCafeNF”,
“Pothana2000”,
“PrinceValiant”,
“PT-Sans”,
“PT-Sans-Bold”,
“PT-Sans-Bold-Italic”,
“PT-Sans-Caption”,
“PT-Sans-Caption-Bold”,
“PT-Sans-Italic”,
“PT-Sans-Narrow”,
“PT-Sans-Narrow-Bold”,
“PublicEnemyNF”,
“PyriformTonesNF”,
“Quicksand-Bold”,
“Quicksand-BoldItalic”,
“Quicksand-Italic”,
“Quicksand-Light”,
“Quicksand-LightItalic”,
“Quicksand-Regular”,
“QuicksandDash-Regular”,
“QuigleyWiggly”,
“Rachana”,
“RaconteurNF”,
“RadioDaysNF”,
“RadioRanchNF”,
“RaggMoppNF”,
“Raleway-Black”,
“Raleway-Black-Italic”,
“Raleway-Bold”,
“Raleway-Bold-Italic”,
“Raleway-ExtraBold”,
“Raleway-ExtraBold-Italic”,
“Raleway-ExtraLight”,
“Raleway-ExtraLight-Italic”,
“Raleway-Italic”,
“Raleway-Light”,
“Raleway-Light-Italic”,
“Raleway-Medium”,
“Raleway-Medium-Italic”,
“Raleway-Regular”,
“Raleway-SemiBold”,
“Raleway-SemiBold-Italic”,
“Raleway-Thin”,
“Raleway-Thin-Italic”,
“RaskalnikovNF”,
“RedOctoberNF”,
“Rekha”,
“Reynold-Contour”,
“ReynoldArtDeco”,
“RhubarbPie”,
“RialtoNF”,
“RicksAmericanNF”,
“RiotSquadNF”,
“RitzyNormal”,
“RitzyRemixNF”,
“RivannaNF”,
“Roboto-Black”,
“Roboto-Black-Italic”,
“Roboto-Bold”,
“Roboto-Bold-Italic”,
“Roboto-Condensed-Bold”,
“Roboto-Condensed-Bold-Italic”,
“Roboto-Condensed-Italic”,
“Roboto-Condensed-Light”,
“Roboto-Condensed-Light-Italic”,
“Roboto-Condensed-Regular”,
“Roboto-Italic”,
“Roboto-Light”,
“Roboto-Light-Italic”,
“Roboto-Medium”,
“Roboto-Medium-Italic”,
“Roboto-Regular”,
“Roboto-Thin”,
“Roboto-Thin-Italic”,
“Rockmaker”,
“RollerCoaster”,
“RollingNoOne-Extrabold”,
“RomanAntique”,
“RomanAntique-Italic”,
“RunyTunesRevisitedNF”,
“RxScript”,
“Saddlebag-Black”,
“Sail”,
“Sansation-Bold”,
“Sansation-Bold-Italic”,
“Sansation-Italic”,
“Sansation-Light”,
“Sansation-Light-Italic”,
“Sansation-Regular”,
“SansPlateCaps”,
“SarsaparillaNF”,
“Schampel-Heavy”,
“SeasideResortNF”,
“SelznickRemixNF”,
“SesquipedalianNF”,
“ShallWeGdanskNF”,
“ShinerBlock”,
“ShinzenStroke”,
“Sho-CardCapsNF”,
“SidTheKidNF”,
“SkaterPark-Black”,
“SkittlesnBeerNF”,
“Slabtag”,
“SlugfestNF”,
“SmartFrocksNF”,
“SmorgasbordNF”,
“SnappyServiceNF”,
“Sofia-Regular”,
“SonomaScript”,
“SouciSansNF”,
“Source-Sans-Pro”,
“Source-Sans-Pro-Black”,
“Source-Sans-Pro-Black-Italic”,
“Source-Sans-Pro-Bold”,
“Source-Sans-Pro-Bold-Italic”,
“Source-Sans-Pro-ExtraLight”,
“Source-Sans-Pro-ExtraLight-Italic”,
“Source-Sans-Pro-Italic”,
“Source-Sans-Pro-Light”,
“Source-Sans-Pro-Light-Italic”,
“Source-Sans-Pro-Semibold”,
“Source-Sans-Pro-Semibold-Italic”,
“SpaceCadetNF”,
“SpacePatrol”,
“SpeedballNo1NF”,
“SpeedballNo2NF”,
“SpeedballNo3NF”,
“SpondulixNF”,
“StandingRoomOnlyNF”,
“StonyIslandNF”,
“StudebakerNF”,
“StudebakerNF-Bold”,
“StudentCommons”,
“Tangerine”,
“Tangerine-Bold”,
“TanglewoodTalesNF”,
“TaraBulbousNF”,
“TeamSpiritNF”,
“Terrazan”,
“Terribo-Black”,
“TestarossaNF”,
“ThamesNudeRoman”,
“Times-New-Roman”,
“Times-New-Roman-Bold”,
“Times-New-Roman-Bold-Italic”,
“Times-New-Roman-Italic”,
“TitanickDisplayNF”,
“Titillium”,
“Titillium-Black”,
“Titillium-Bold”,
“Titillium-Bold-Italic”,
“Titillium-Bold-Upright”,
“Titillium-Light”,
“Titillium-Light-Italic”,
“Titillium-Light-Upright”,
“Titillium-Regular-Italic”,
“Titillium-Regular-Upright”,
“Titillium-Semibold”,
“Titillium-Semibold-Italic”,
“Titillium-Semibold-Upright”,
“Titillium-Thin”,
“Titillium-Thin-Italic”,
“Titillium-Thin-Upright”,
“TobaccoRoadNF”,
“TobagoPoster”,
“TobagoPosterAlternate”,
“TooneyNoodleNF”,
“Topic”,
“Topic-Bold”,
“TopicAlternates”,
“TopicAlternates-Bold”,
“ToylandNF”,
“Traditional Arabic”,
“TradingPostNF”,
“Trebuchet-MS”,
“Trebuchet-MS-Bold”,
“Trebuchet-MS-Bold-Italic”,
“Trebuchet-MS-Italic”,
“Tribeca”,
“Trocadero”,
“TroglodyteNF”,
“TropicanaNF”,
“TucsonTwoStepNF”,
“Ubuntu”,
“Ubuntu-Bold”,
“Ubuntu-Bold-Italic”,
“Ubuntu-Condensed”,
“Ubuntu-Italic”,
“Ubuntu-Light”,
“Ubuntu-Light-Italic”,
“Ubuntu-Medium”,
“Ubuntu-Medium-Italic”,
“Ubuntu-Mono”,
“Ubuntu-Mono-Bold”,
“Ubuntu-Mono-Bold-Italic”,
“Ubuntu-Mono-Italic”,
“UndergroundNF”,
“Unicorn”,
“UppenArmsNF”,
“VacationPostcardNF”,
“ValleyGrrrlNF”,
“Vemana2000”,
“Ventura-Bold”,
“VenturaInline-Bold”,
“VenturaShadow-Bold”,
“Verdana”,
“Verdana-Bold”,
“Verdana-Bold-Italic”,
“Verdana-Italic”,
“Viking”,
“VinnieBoomBahNF”,
“Vivian”