# Ubuntu – PDF font falls back to DejaVu Sans, need a monospace replacement

16.04evincefontspdf

I have a PDF that features code fragments and it references Courier Std (which is not available on my system and I am not planning to buy it either). The problem is that in the Evince Document Viewer (3.18.2) this font is replaced by DejaVu Sans, which is not a monospace font and code that is note set in a monospace font is just hard to read. (the idiosyncratic kerning adjustment just makes it even harder).

I have installed the msttcorefonts in the hope that it might help, it does not. How can replace DejaVu Sans with a monospace font?

UPDATE: If I load the PDF in Firefox, the font gets correctly replaced by a monospace font.

• This issue should be patched in the next version of Ubuntu (21.04). There is also an upstream fontconfig merge request #128 pending.

In the meantime, the following steps should help address some PDF font substitution problems:

• Install fonts-urw-base35.

• Create the file ~/.config/fontconfig/conf.d/10-pdf-aliases.conf with the following contents:

  <?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "/etc/fonts/conf.d/fonts.dtd">
<fontconfig>

<alias binding="same">
<family>CourierStd</family>
<accept>
<family>Courier</family>
</accept>
</alias>

<alias>
<family>CourierStd</family>
<default><family>monospace</family></default>
</alias>

</fontconfig>


Then run fc-cache (may not be necessary).

You can add other font aliases to the file as needed.