mPDF Manual – Fonts & Languages

# Font substitution 6.x

If a font or default font is declared in HTML or CSS, the font that is actually set is determined by:

### Standard use

If called in HTML/CSS the font-family name is converted to an mPDF font-family name (see Font names) e.g.

The font requested (including style) is checked to see if it is available to mPDF: set by the array $available_unifonts* : 1. If the font[style] exists - selected e.g. trebuchetms['B'] 2. If the font[nostyle] exists - selected e.g. trebuchetms['R'] 3. Looks up the font-family in the three arrays sans_fonts, serif_fonts, and mono_fonts defined in mpdf_config.php , in this case looking for 'trebuchetms'. If found, substitutes a font of similar type (sans-serif, serif, or mono) - the first font in the sans_fonts, serif_fonts, or mono_fonts arrays is used. 4. If no font has yet been selected, the first font in the array $available_unifonts* is selected
* The array  $available_unifonts is initially derived from $this->fontdata in the config_fonts.php file. (trebuchetms['B'] will be converted to 'trebuchetmsB') ## Core fonts If core fonts only are specified by using \$mpdf = new mPDF('c'), then all font requests will be substituted by Arial/Helvetica, Times or Courier i.e. the core PDF fonts. mPDF determines whether the requested font is a sans-serif, serif or monospace font (as above), and substitutes accordingly.  ## Character (font) substitution If some circumstances, individual characters are replaced by glyphs from another font - see character (font) substitution.