How to Customize Font Families in PDF Generation with Dompdf?

Dompdf: Customization of Font Families in PDF Generation

In dompdf, a popular PHP library for generating PDF documents, the default font family may not align with the intended design. This can be frustrating when trying to achieve a specific look and feel.

Dompdf's Font Support

Internally, PDF documents support a limited set of fonts by default: Helvetica, Times-Roman, Courier, Zapf-Dingbats, and Symbol. When encountering a custom font specified through CSS, dompdf attempts to embed it within the PDF if it has been previously loaded or is referenced via a CSS @font-face rule.

Font Loading Options for Dompdf

To load a desired font and enable its use in dompdf, you can leverage the following methods:

1. CSS @font-face Rules: This method allows for runtime font loading if the font is accessible online. Simply define the font properties and specify the font's URL.
2. load_font.php Script: Using the command line, you can run the load_font.php script included with dompdf to load fonts. Provide the font name, normal font file path, and optionally the bold, italic, and bold-italic font files.
3. Fonts Admin Site: If you prefer a web-based approach, navigate to dompdf/www/fonts.php within the included admin site. This allows you to load fonts through a graphical interface.

Example Usage

To set the font-family to "NeutraText-Book" using the @font-face method:

@font-face {
  font-family: 'NeutraText-Book';
  src: url(/path/to/neutratext.ttf) format('truetype');
}

With the load_font.php script:

load_font.php "NeutraText-Book" /path/to/neutratext.ttf

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