# Doppio One font > A boxy, low-contrast sans in one sturdy weight by Szymon Celej, made with screens in mind. Doppio One is a low-contrast sans serif designed by Szymon Celej, with squared-off curves and sturdy strokes. Doppio One has one Regular style with 399 glyphs covering Latin and Latin Extended, and it is not a variable font. It is released under the SIL Open Font License 1.1 and suits headings, buttons and short on-screen text. ## Facts - Classification: [Sans Serif](https://trendhub.net/fonts/category/sans-serif) - Designed by: Szymon Celej - License: SIL Open Font License 1.1 (https://openfontlicense.org/open-font-license-official-text/) - Styles: 1 (Regular 400) - Variable font: No - Glyphs: 399 - Character sets: latin, latin-ext - Last updated: 2025-09-10 - Official source: https://fonts.google.com/specimen/Doppio+One - Page: https://trendhub.net/fonts/doppio-one - Tagged for: Headlines, Interfaces, Tech ## About Doppio One Doppio One is a sans serif typeface whose round letters are drawn as softened rectangles. In the specimen the o, c and e have flattened sides, the strokes are thick and nearly uniform, and the lowercase is tall against the capitals, which gives words a compact, solid shape. The official notes call the design robust and low in contrast and say the boxy style suits on-screen use at both small and large sizes. The family consists of a single Regular style, which is noticeably darker than a typical text weight; there is no italic and no lighter or bolder companion. The font holds 399 glyphs for Latin and Latin Extended. Szymon Celej is credited as the designer, the copyright notice names Sorkin Type Co, and the files are published under the SIL Open Font License 1.1. ## License SIL Open Font License 1.1. Copyright (c) 2011 by Sorkin Type Co (www.sorkintype.com), with Reserved Font Name "Doppio". Allowed: - Use the fonts in personal and commercial work, in print, on the web and in apps. - Modify the fonts and build new versions from them. - Redistribute the fonts, on their own or bundled with software, as long as the license text and copyright notice go with them. Conditions: - The fonts cannot be sold by themselves. - A modified version must stay under the same license and cannot use a Reserved Font Name without the copyright holder's permission. - The authors' names cannot be used to promote a modified version without permission. Summary only, not legal advice. Full text: https://openfontlicense.org/open-font-license-official-text/ ## Where it works - **Website headings**: Thick, even strokes and squared curves keep titles solid without needing a bold cut. - **Buttons and navigation**: The tall lowercase and flat-sided letters stay legible in short labels on screen. - **Game and app titles**: Boxy letterforms give a technical look to a title or menu screen. - **Banners and thumbnails**: A dark single weight holds its shape over photographs and coloured backgrounds. ## Things to know - **Single style**: Doppio One has Regular 400 only, with no italic or bold. - **Regular reads as semi-bold**: The one weight is heavy in the specimen, so long paragraphs look dark. - **Reserved Font Name**: The font's copyright line reserves the name Doppio, which modified versions cannot use without permission. ## FAQs ### Is Doppio One free for commercial use? Yes. Doppio One is published under the SIL Open Font License 1.1, which allows use in personal and commercial work, modification and redistribution. The font cannot be sold on its own, and modified versions stay under the same license. ### Who designed Doppio One? Doppio One was designed by Szymon Celej. The copyright notice names Sorkin Type Co. ### How many weights does Doppio One have? Doppio One has one weight, Regular 400, and no italic. It is not a variable font. ### Which languages does Doppio One support? Doppio One includes the letters needed for English and other Latin-script languages such as French, German, Spanish, Turkish, Polish, Czech and Hungarian. Romanian is not among the languages with complete letters. ### Can Doppio One be used for body text? The official notes say Doppio One works at small text sizes as well as large ones, but with one heavy weight and no italic it is better kept to short passages. --- Source: https://trendhub.net/fonts/doppio-one (trendhub)