By the way, I've just tried to use ttf2woff from fontutils to convert Ubuntu TTF font to WOFF format for use in one of my projects. And the resulting WOFF produced by this utility is not usable in any Linux browsers (tried Firefox, Chrome, Opera). Don't know if it works on Windows. And at the same time some random online font converter produced normal WOFF from the same TTF. I've reported this bug at CPAN: https://rt.cpan.org/Public/Bug/Display.html?id=83377 Links to font files, for the reference: * Source TTF: http://vmx.yourcmc.ru/var/ttf2woff-bug/ubuntu.ttf * Bad WOFF (by ttf2woff): http://vmx.yourcmc.ru/var/ttf2woff-bug/ubuntu-bad.woff * Good WOFF (by online converter): http://vmx.yourcmc.ru/var/ttf2woff-bug/ubuntu-good.woff