


How to Set and Enforce the Desired Font in Dompdf PDF Generation?
Nov 16, 2024 am 01:08 AMOvercoming Font-Family Discrepancies in Dompdf PDF Generation
Dompdf offers a convenient way to create PDFs, but users often encounter discrepancies where the specified font-family in CSS is overlooked, resulting in the default Times New Roman font in the PDF output. This commonly occurs when a custom font is employed, leading to the question: how can you set and enforce the desired font?
The solution lies in understanding how Dompdf manages fonts. PDF documents inherently support a limited set of fonts. To incorporate other fonts, Dompdf requires them to be pre-loaded or referenced in CSS using the @font-face rule. This pre-loading is essential for generating accurate font metrics during typesetting.
Dompdf supports Type 1 and TrueType fonts, provided their font metrics are available. The PHP-based php-font-lib library assists in loading and sub-setting these fonts.
Methods for Font Loading
There are several approaches to load fonts:
- CSS @font-face Rules: Load a font dynamically via CSS if it's accessible online.
- Command Line: Use dompdf/load_font.php to load a font from the command line. The required parameters are the font name and the path to the font files.
- Dompdf Admin Site: Access dompdf/www/fonts.php to load fonts through the admin site. Remember to configure the admin credentials before use.
Example: CSS @font-face Rule
To load a font using a CSS @font-face rule, incorporate the following code:
@font-face { font-family: 'Open Sans'; font-style: normal; font-weight: normal; src: url(http://themes.googleusercontent.com/static/fonts/opensans/v8/cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf) format('truetype'); }
Note: The load_font.php and admin site methods will be deprecated in dompdf 0.7.0 and later.
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