https://bugzilla.redhat.com/show_bug.cgi?id=1084228
Bug ID: 1084228 Summary: Hinting for Liberation Sans inferior at small font size Product: Fedora Version: 20 Component: liberation-fonts Assignee: psatpute@redhat.com Reporter: Eduard.Braun2@gmx.de QA Contact: extras-qa@fedoraproject.org CC: fonts-bugs@lists.fedoraproject.org, i18n-bugs@lists.fedoraproject.org, petersen@redhat.com, psatpute@redhat.com
Created attachment 882473 --> https://bugzilla.redhat.com/attachment.cgi?id=882473&action=edit testcase with the problematic font charakteristics
Wikipedia recently switched to a predefined CSS font stack for body font so even Windows users will be served with Liberation Sans if installed (e.g. because it is distributed with Libre Office).
This made apparent inferior hinting of Liberation Sans with bold weight when rendered at the specific size of 0.875em (the font size used in MediaWiki's vector skin).
Most notable "e"s have a very thick lower curve while the upper curve is much too thin. This also applies for variants like "è é ê ë". Funnily not for "œ æ" though which is rendered differently.
Also notable is e.g. "s" which has thick upper/lower curves but is thin in the middle.
A testcase with the described font characteristics set is attached. The screenshot shows the rendering in Firefox.
The screenshot was created with Firefox 28.0 on Windows 7. The installed version of the Liberation fonts is 2.00.1