Extending with Macros | laravel-pdf | Spatie

 SPATIE

  Laravel PDF
==============

spatie.be/open-source

  [Docs](https://spatie.be/docs)  [Laravel-pdf](https://spatie.be/docs/laravel-pdf/v2)  Advanced-usage  Extending with Macros

 Version   v2   v1

 Other versions for crawler [v2](https://spatie.be/docs/laravel-pdf/v2) [v1](https://spatie.be/docs/laravel-pdf/v1)

- [ Introduction ](https://spatie.be/docs/laravel-pdf/v2/introduction)
- [ Support us ](https://spatie.be/docs/laravel-pdf/v2/support-us)
- [ Requirements ](https://spatie.be/docs/laravel-pdf/v2/requirements)
- [ Installation & setup ](https://spatie.be/docs/laravel-pdf/v2/installation-setup)
- [ Questions and issues ](https://spatie.be/docs/laravel-pdf/v2/questions-issues)
- [ Alternatives ](https://spatie.be/docs/laravel-pdf/v2/alternatives)
- [ Changelog ](https://spatie.be/docs/laravel-pdf/v2/changelog)
- [ About us ](https://spatie.be/docs/laravel-pdf/v2/about-us)

Basic usage
-----------

- [ Creating PDFs ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/creating-pdfs)
- [ Responding with PDFs ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/responding-with-pdfs)
- [ Formatting PDFs ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/formatting-pdfs)
- [ Saving PDFs to disks ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/saving-pdfs-to-disks)
- [ Queued PDF generation ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/queued-pdf-generation)
- [ Testing PDFs ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/testing-pdfs)
- [ Setting defaults ](https://spatie.be/docs/laravel-pdf/v2/basic-usage/setting-defaults)

Drivers
-------

- [ Configuration ](https://spatie.be/docs/laravel-pdf/v2/drivers/configuration)
- [ Customizing Browsershot ](https://spatie.be/docs/laravel-pdf/v2/drivers/customizing-browsershot)
- [ Using the Cloudflare driver ](https://spatie.be/docs/laravel-pdf/v2/drivers/using-the-cloudflare-driver)
- [ Using the DOMPDF driver ](https://spatie.be/docs/laravel-pdf/v2/drivers/using-the-dompdf-driver)
- [ Generating PDFs on AWS Lambda ](https://spatie.be/docs/laravel-pdf/v2/drivers/generating-pdfs-on-aws-lambda)
- [ Using the Gotenberg driver ](https://spatie.be/docs/laravel-pdf/v2/drivers/using-the-gotenberg-driver)
- [ Using the WeasyPrint driver ](https://spatie.be/docs/laravel-pdf/v2/drivers/using-the-weasyprint-driver)
- [ Custom drivers ](https://spatie.be/docs/laravel-pdf/v2/drivers/custom-drivers)

Advanced usage
--------------

- [ Creating PDFs with multiple pages ](https://spatie.be/docs/laravel-pdf/v2/advanced-usage/creating-pdfs-with-multiple-pages)
- [ Using Tailwind ](https://spatie.be/docs/laravel-pdf/v2/advanced-usage/using-tailwind)
- [ Extending with Macros ](https://spatie.be/docs/laravel-pdf/v2/advanced-usage/extending-with-macros)

 Extending with Macros
=====================

###  On this page

1. [ Adding macros ](#content-adding-macros)
2. [ Using macros ](#content-using-macros)

The `PdfBuilder` class is macroable, which means you can add custom methods to it using Laravel's macro functionality. This allows you to extend the PDF builder with your own custom methods.

Adding macros
-----------------------------------------------------------------------------------------------

You can add macros to the `PdfBuilder` class in your service provider's `boot` method:

```
use Spatie\LaravelPdf\PdfBuilder;

class AppServiceProvider extends ServiceProvider
{
    public function boot()
    {
        PdfBuilder::macro('withCustomHeader', function (string $title) {
            $this->headerHtml = "{$title}";

            return $this;
        });
    }
}
```

Using macros
--------------------------------------------------------------------------------------------

Once you've added a macro, you can use it just like any other method on the `PdfBuilder` class:

```
use Spatie\LaravelPdf\Facades\Pdf;

Pdf::view('invoice')
    ->withCustomHeader('Invoice #123')
    ->save('invoice.pdf');
```

Macros are particularly useful for:

- Adding organization-specific formatting options
- Creating reusable PDF components
- Standardizing your PDF outputs across your application