The Thesis project

LucasFonts is the company of Dutch type designer
Luc(as) de Groot.

Luc(as) de Groot is mostly known for his Thesis project. Besides these and other retail fonts available via our web shop, LucasFonts offers every possible kind of service in adapting fonts to your needs and designing customized glyphs or complete typefaces. Contact

With Thesis, Luc(as) de Groot pioneered the concept of the all-purpose type system or superfamily. Thesis provides the user with three compatible styles – TheSans, TheMix and TheSerif – in a range of eight weights including real italics. The Thesis family has been expanded over the years (TheSans and TheMix are now available in three widths). TheSans also offers three ultra-narrow widths and several sub-families.

Speaking events

November 7, 2015 | Forum Mediendesign, Cologne
Bis zum Äußersten

October 19, 2015 | Folha de São Paulo publishing house
Teaching lecture: Floris de S.Paulo

October 14–17, 2015 | ATypI São Paulo
Floris de S.Paulo

September 18–20, 2015 | Tÿpo St.Gallen 2015 – Tempo
Kurventrägheit in flotten Zeiten

August 28, 2015 | Front in Amsterdam
Type to the 7th dimension

May 21–23, 2015 | Typo Berlin 2015 – Character
Bis zum äußersten: LucasFonts

Taz Wide and Extended

Milestone 2014: Taz Wide and Taz Extended complement the Taz family. 10 weights each with 812 glyphs including Vietnamese (!), stylistic alternates, and 8 figure sets. Like all Taz fonts, they have square dots and punctuation marks, which can be switched to rounded versions for a softer look. Taz Wide has a generous width and saves vertical space. Taz Extended, as one of the widest fonts on the market, makes a vigorous impression and is ideally suited for contemporary editorial design, striking art and advertising..

Edgar Waltherts notes on Taz development

Slanted, one of Germanys most frequented blogs on graphic design and typography, has published a comprehensive article on LucasFonts latest releases Taz Wide and Taz Extended. Dive in and learn about super families, interpolation curves and hardware stores. Read more

Check out this extensive feature about Luc(as) in the latest issue of Sabine.

Check out this extensive feature about Luc(as) in issue No.4, 2010 of Sabine. Sabine is the quarterly, German language magazine published by the design department of the University of Applied Sciences in Potsdam. Read more