Spotify
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- Headlines
- Spotify Mix Title Proprietary (Spotify) Hero (ultra-wide 900, stretch 156.25%) and section heads (800) Preview: Unbounded 900, our open stand-in
- Text
- Spotify Mix Proprietary (Spotify) Body, subheads, card titles, buttons, nav, footer Preview: Hanken Grotesk 450, our open stand-in
Netflix
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- Headlines
- Netflix Sans Proprietary (Netflix, made with Dalton Maag, 2018); not licensed for third parties Headlines (Bold 700) and section heads (Medium 500) Preview: Geist 700, our open stand-in
- Text
- Netflix Sans Proprietary (Netflix, made with Dalton Maag, 2018); not licensed for third parties Body, FAQ, buttons, footer (Regular 400, Medium 500) Preview: Geist 400, our open stand-in
Starbucks
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- Headlines
- Sodo Sans Proprietary to Starbucks; the guide self-hosts it (SoDoSans-*.woff2) and publishes no licence Most versatile face; headlines on the web, body copy everywhere Preview: Plus Jakarta Sans 600, our open stand-in
- Text
- Sodo Sans Proprietary to Starbucks; no licence published Body copy, product facts, labels Preview: Plus Jakarta Sans 400, our open stand-in
Also Lander (Lander Grande, Lander Tall) · Pike
Duolingo
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- Headlines
- Feather Bold (served on www.duolingo.com as "feather", weight 700) Proprietary and bespoke to Duolingo; not licensable. The guide publishes Nunito as its substitute for print and documents. Large, brief headlines: lowercase, left-aligned, about 10 words at most, 30px minimum, in Feather Green or white on color Preview: Mochiy Pop P One 400, our open stand-in
- Text
- DIN Next Rounded (brand law); www.duolingo.com serves its own "duolingo-sans" (variable, 100-900) DIN Next Rounded: commercial licence (Monotype). duolingo-sans: Duolingo's own web face, not licensable. Nunito is the guide's published substitute. Headlines of 10+ words, subheads, all body copy, ALL CAPS buttons; 14px minimum, leading 140% Preview: Baloo 2 475, our open stand-in
BBC
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- Headlines
- BBC Reith Serif (Medium on headlines) Bespoke BBC face by Dalton Maag; usable only with a BBC agreement or authorisation (bbc.co.uk/branding/reith-font) Every promo headline in Medium (28/32 lead and features, 18/22 promos, 14/18 audio titles); GEL names the sizes Canon to Minion Preview: Literata 550, our open stand-in
- Text
- BBC Reith Serif (Regular on summaries) Bespoke BBC face; usable only with a BBC agreement Promo summaries 14/18 Regular Preview: Literata 400, our open stand-in
Also BBC Reith Sans (UI sans: nav, labels, meta, buttons)
Blender
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- Headlines
- Inter Open (SIL OFL 1.1), copyright The Inter Project Authors; shipped in Blender Web Assets Hero and massive titles at 800, headings at 600 Preview: Inter 800, the real face
- Text
- Inter Open (SIL OFL 1.1) Body 400, buttons 500, light 300 Preview: Inter 400, the real face
Dropbox
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- Headlines
- DB Sharp Grotesk (Sharp Grotesk Variable for headlines) Proprietary (custom, made with Sharp Type) Headlines. Two cuts on dropbox.com: Sharp Grotesk width 20 Medium (500) for hero, feature and card titles, and Sharp Grotesk 23 Book (400), a wider, lighter cut, for centered section headlines Preview: Archivo 650, our open stand-in
- Text
- Atlas Grotesk Proprietary (Commercial Type) Body, leads, buttons, labels on dropbox.com (observed in computed styles; not named in the guidelines) Preview: Public Sans 400, our open stand-in
Fedora
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- Headlines
- Montserrat Open (SIL OFL 1.1, Google Fonts); the guide: openly licensed and freely distributable Titling and headlines; also the Fedora Editions logos and the sub-logo templates (p.8-9, p.18). The booklet sets its chapter titles in Montserrat SemiBold and its running text in Montserrat Light/Regular Preview: Montserrat 600, the real face
- Text
- Open Sans Open (SIL OFL 1.1, Google Fonts); the guide: openly licensed and freely distributable Body text and copy, 'a wide range of weights' (Light to Ultra-Bold with italics, p.19) Preview: Open Sans 400, the real face
HubSpot
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- Headlines
- HubSpot Serif Proprietary (HubSpot). Stand-in: Literata (SIL OFL 1.1) Preview: Literata 320, our open stand-in
- Text
- HubSpot Sans Proprietary (HubSpot). Stand-in: Onest (SIL OFL 1.1) Preview: Onest 400, our open stand-in
Mailchimp
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- Headlines
- Means Web Proprietary Headlines h1–h3, regular weight, tight tracking Preview: Literata 450, our open stand-in
- Text
- Tally Proprietary Body, buttons, labels (the live CSS lists Graphik Web as its fallback) Preview: Hanken Grotesk 330, our open stand-in
Also Source Code Pro
Medium
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- Headlines
- GT Super (Grilli Type) Commercial (Grilli Type); not supplied. Stand-in Newsreader 380 opsz 72 (OFL), -0.042em, same px sizes Preview: Newsreader 380, our open stand-in
- Text
- Söhne (Klim Type Foundry) Commercial (Klim); not supplied. Stand-in Geist 400 (OFL), -0.012em Preview: Geist 400, our open stand-in
Monzo
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- Headlines
- MonzoSansDisplay proprietary Monzo face, self-hosted woff2 from static-assets.monzo.com; not licensed to us Every homepage headline: 800 for H1/H2, 700 for card titles, 600 for small heads (observed 2026-10-29) Preview: Raleway 900, our open stand-in · Source
- Text
- Monzo Sans (served as MonzoSansText) proprietary Monzo face, not licensed to us Functional typeface in four weights (Regular, Medium, Semi-bold, Bold): body, lead copy, sub-headers, UI, data; always sentence case (pp.35-38) Preview: Onest 350, our open stand-in
Also Oldschool Grotesk Compact Extra Bold
Mozilla
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- Headlines
- Mozilla Headline Open (SIL OFL); on Google Fonts since 2025-07-28 as variable fonts (Headline: wght 200-700, wdth 75-125; Text: wght 200-700) Headlines 24pt and up, Standard width; Condensed ExtraLight for large numbers Preview: Mozilla Headline 600, the real face
- Text
- Mozilla Text Open (SIL OFL); on Google Fonts since 2025-07-28 as variable fonts (Headline: wght 200-700, wdth 75-125; Text: wght 200-700) Body, subheads, buttons, labels Preview: Mozilla Text 400, the real face
PostHog
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- Headlines
- RoundHog Proprietary: PostHog's own face. The woff2 files are public at brand.posthog.com and in @posthog/brand, but under the PolyForm Strict License 1.0.0 (no use in other projects) Titles Bold (800), links and paragraphs under large headers SemiBold (700), body Regular (400); Medium 500 exists Preview: Figtree 800, our open stand-in · Source
- Text
- RoundHog Proprietary (PolyForm Strict 1.0.0) Regular and Regular Italic for body Preview: Figtree 560, our open stand-in · Source
Also Source Code Pro · Squeak · Loud Noises
Wise
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- Headlines
- Wise Sans (proprietary) Proprietary to Wise; not available. Stand-in Plus Jakarta Sans 800 (OFL), 0.9032x size, letter-spacing -0.095em, word-spacing 0.13em, -webkit-text-stroke 0.03em currentColor (amounts 0.045em) Preview: Plus Jakarta Sans 800, our open stand-in
- Text
- Inter SIL OFL (Google Fonts) Preview: Inter 400, the real face