Summary only, not legal advice. The licence text governs; confirm with the rights holder for your use. Read more
Fonts · Serif · Google Fonts popularity #27
Licensed under the Apache License 2.0. A permissive licence that allows use, modification and redistribution with notice requirements.
Copyright line
Copyright 2018 The Roboto Slab Project Authors (https://github.com/googlefonts/robotoslab)
“each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.”
“You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:”
“This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.”
From the Google Fonts FAQ, which applies to every family in the Google Fonts library.
Can I use it in commercial work?
Commercial use is allowed, including inside products you sell.
“Yes, you can use them commercially, and even include them within a product that is sold commercially.”
Can I use it in work I make for a client?
OFL fonts can be used for any kind of design work.
“Authors of fonts released under the OFL allow you to use their font software as such for any kind of design work.”
Can I use it in a logo?
Google says any Google Font can be used in a logo.
“Yes, you can use Google Fonts within any logo.”
Can a logo made with it be registered as a trademark?
You own the artwork you make; trademark registration itself isn't discussed on the pages checked.
“No. You remain the author and copyright holder of that newly derived graphic or object.”
Can I use it on merchandise or products I sell?
Google lists print, store fronts and jewelry among allowed surfaces.
“Yes, you can use the fonts on any surface.”
Can I use it on a website (live text or web embedding)?
Embed via the Google Fonts CSS API or self-host.
“Use the Google Fonts CSS API to embed the fonts directly on your website.”
Can I embed it in an app or software?
OFL fonts can be bundled with software, including commercial software, if the licence travels with them.
“Yes, you can do this with both the Original Version and a Modified Version of the fonts.”
Can I give the font/asset files to my client?
You may share the fonts, as long as the full package and licence go with them.
“You are very welcome to share open fonts with friends, family and colleagues through removable media. Just remember to include the full font package, including any copyright notices and licensing information as available in OFL.txt.”
Can I modify it?
Allowed under the licence conditions (e.g. OFL Reserved Font Names).
“You can also modify fonts themselves with font editor tools, subject to the license conditions.”