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 The files are attached for reference - source TTF, WOFF created by ttf2woff (ubuntu-bad.woff) and normal WOFF created by online converter (ubuntu-good.woff).