How to Create Barcode and Add it in Magento 2 Invoice PDF

Magento 2 allows the admin to send invoice PDF as the order completes.

Invoices are the official documents that you send with every order that is important for accounting and tax purposes.

The default Magento 2 facilitates the merchants to provide multiple things in invoice PDFs like order id, customer name, shipping address, product name, product quantity, product price, total amount, and so on.

However, depending on the business requirements, customization in invoice PDF can be done.

One such customization solution is offered in this post to create barcode and add it in Magento 2 invoice PDF.

Barcode in invoice PDF helps the customer to scan and get the order id using which it is easy to get order details.

Barcodes in invoices enhance the after-sales customer experience of the store. Barcodes are easy to use and decrease human errors.

Check the programmatic solution to add a barcode in invoice pdf in Magento 2 below:

Solution to Create Barcode and Add it in Magento 2 Invoice PDF

1. Create di.xml file at Vendor\Extension\etc
   
   <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd"> <type name="Magento\Sales\Model\Order\Pdf\Invoice"> <plugin name="barcodes" type="Vendor\Extension\Plugin\Invoice" sortOrder="10"/> </type> </config>

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   <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">     <type name="Magento\Sales\Model\Order\Pdf\Invoice">         <plugin name="barcodes" type="Vendor\Extension\Plugin\Invoice" sortOrder="10"/>     </type> </config>

2. Create Invoice.php file in Vendor\Extension\Plugin\Invoice.php
   
   <?php namespace Vendor\Extension\Plugin; use Magento\Framework\App\Config\ScopeConfigInterface; use \Zend\Barcode\Barcode; class Invoice { const XML_PATH_BARCODES_ENABLED = 'barcodes/general/eb_barcodes_active'; private $scopeConfig; public function __construct(ScopeConfigInterface $scopeConfig) { $this->scopeConfig = $scopeConfig; } public function beforeInsertDocumentNumber($subject, $page, $text) { $config = new \Zend_Config([ 'barcode' => 'code128', 'barcodeParams' => [ 'text' => $this->getInvoiceNumber($text), 'drawText' => true ], 'renderer' => 'image', 'rendererParams' => ['imageType' => 'png'] ]); $barcodeResource = Barcode::factory($config)->draw(); ob_start(); imagepng($barcodeResource); $barcodeImage = ob_get_clean(); $image = new \Zend_Pdf_Resource_Image_Png('data:image/png;base64,' . base64_encode($barcodeImage)); if ($image) { $docHeader = $subject->getDocHeaderCoordinates(); $page->drawImage($image, $docHeader[2] - 130, $docHeader[1] + 2, $docHeader[2] + 8, $docHeader[1] + 35); } } protected function getInvoiceNumber($text) { $array_of_words = explode("#", $text); return $array_of_words[1]; } }

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   <?php   namespace Vendor\Extension\Plugin;   use Magento\Framework\App\Config\ScopeConfigInterface; use \Zend\Barcode\Barcode;   class Invoice {     const XML_PATH_BARCODES_ENABLED = 'barcodes/general/eb_barcodes_active';     private $scopeConfig;       public function __construct(ScopeConfigInterface $scopeConfig)     {         $this->scopeConfig = $scopeConfig;     }       public function beforeInsertDocumentNumber($subject, $page, $text)     {         $config = new \Zend_Config([             'barcode' => 'code128',             'barcodeParams' => [                 'text' => $this->getInvoiceNumber($text),                 'drawText' => true             ],             'renderer' => 'image',             'rendererParams' => ['imageType' => 'png']         ]);           $barcodeResource = Barcode::factory($config)->draw();         ob_start();         imagepng($barcodeResource);         $barcodeImage = ob_get_clean();         $image = new \Zend_Pdf_Resource_Image_Png('data:image/png;base64,' . base64_encode($barcodeImage));         if ($image) {             $docHeader = $subject->getDocHeaderCoordinates();             $page->drawImage($image, $docHeader[2] - 130, $docHeader[1] + 2, $docHeader[2] + 8, $docHeader[1] + 35);         }     }       protected function getInvoiceNumber($text)     {         $array_of_words = explode("#", $text);         return $array_of_words[1];     } }

   After doing this, the customers will start receiving invoice PDFs having a barcode.

Done! That’s what you need to do.

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