Source Sans Pro
Source Sans Pro is a set of OpenType fonts that have been designed to work well in user interface (UI) environments. In addition to a functional OpenType font, this open source project provides all of the source files that were used to build this OpenType font by using the AFDKO makeotf tool.
Download the fonts (OTF, TTF, WOFF, WOFF2, EOT)
Font installation instructions
- Mac OS X
- Linux/Unix-based systems
bower install git://github.com/adobe-fonts/source-sans-pro.git#release
- npm v2.x
npm install --fetch-only git://github.com/adobe-fonts/source-sans-pro.git#release
- npm v3.x
npm install git://github.com/adobe-fonts/source-sans-pro.git#release
Building the fonts from source
To build the binary font files from source, you need to have installed the Adobe Font Development Kit for OpenType (AFDKO). The AFDKO tools are widely used for font development today, and are part of most font editor applications.
Building one font
The key to building OTF or TTF fonts is
makeotf, which is part of the AFDKO toolset.
Information and usage instructions can be found by executing
In this repository, all necessary files are in place for building the OTF and TTF fonts. For example, build a binary OTF font for the Regular style like this:
$ cd Roman/Regular/ $ makeotf -r
Building all fonts
For convenience, a shell script named build is provided in the root directory. It builds all OTFs and TTFs, and can be executed by typing:
or this on Windows:
If you want to build directly from masters instead of the instances stored in the repository, or to avoid building all files repetitively, run:
and it will get everything up to date. To generate only the font.ufo instances from the masters, run:
$ make instances
Note: because font.ufo instances are stored in the repository, you may have to delete them first from your working tree before building from masters; see below.
To clean up
makeotf's defaults and other log files, run:
$ make clean
or to remove all build artefacts, including target font binaries:
$ make cleanall
Because font.ufo instances are committed into the repository, they are not
make clean. If that is necessary, run:
$ make cleaninstances
Note also that font.ttf instances stored in the repository are not generated
entirely automatically. These TrueType versions of the instances are produced in
a process that depends on manual workflow described in detail by Frank
Because of that,
make will build the target TTFs only if it finds those files already
Send suggestions for changes to the Source Sans OpenType font project maintainer, Paul D. Hunt, for consideration.
For information about the design and background of Source Sans, please refer to the official font readme file.