Add footer and change label in PDF Invoice in magento 2

Hello

Today I saw you how to change label and add footer to PDF Invoice.

For doing this, we have to make module and override invoice file.

Create extension like this.

app/code/Czargroup/Pdfinvoice/registration.php

<?php
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Czargroup_Pdfinvoice',
    __DIR__
);


app/code/Czargroup/Pdfinvoice/etc/module.xml

<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
<module name="Czargroup_Pdfinvoice" setup_version="1.0.0" />
</config>


app/code/Czargroup/Pdfinvoice/etc/di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Sales\Model\Order\Pdf\Invoice"
                type="Czargroup\Pdfinvoice\Model\Order\Pdf\Invoice"/>
</config>


app/code/Czargroup/Pdfinvoice/Model/Order/Pdf/Invoice.php

<?php
namespace Czargroup\Pdfinvoice\Model\Order\Pdf;

class Invoice extends \Magento\Sales\Model\Order\Pdf\Invoice
{
  
    /**
     * Draw header for item table
     *
     * @param \Zend_Pdf_Page $page
     * @return void
     */
    protected function _drawHeader(\Zend_Pdf_Page $page)
    {
        /* Add table head */
        $this->_setFontRegular($page, 10);
        $page->setFillColor(new \Zend_Pdf_Color_Rgb(0.93, 0.92, 0.92));
        $page->setLineColor(new \Zend_Pdf_Color_GrayScale(0.5));
        $page->setLineWidth(0.5);
        $page->drawRectangle(25, $this->y, 570, $this->y - 15);
        $this->y -= 10;
        $page->setFillColor(new \Zend_Pdf_Color_Rgb(0, 0, 0));

        //columns headers
        $lines[0][] = ['text' => __('Products'), 'feed' => 35];

        $lines[0][] = ['text' => __('SKU'), 'feed' => 290, 'align' => 'right'];

        $lines[0][] = ['text' => __('Qty'), 'feed' => 435, 'align' => 'right'];

        $lines[0][] = ['text' => __('Price'), 'feed' => 360, 'align' => 'right'];

        $lines[0][] = ['text' => __('VAT'), 'feed' => 495, 'align' => 'right'];

        $lines[0][] = ['text' => __('Subtotal'), 'feed' => 565, 'align' => 'right'];

        $lineBlock = ['lines' => $lines, 'height' => 5];

        $this->drawLineBlocks($page, [$lineBlock], ['table_header' => true]);
        $page->setFillColor(new \Zend_Pdf_Color_GrayScale(0));
        $this->y -= 20;
    }

    /**
     * Return PDF document
     *
     * @param array|Collection $invoices
     * @return \Zend_Pdf
     */
    public function getPdf($invoices = [])
    {
        $this->_beforeGetPdf();
        $this->_initRenderer('invoice');

        $pdf = new \Zend_Pdf();
        $this->_setPdf($pdf);
        $style = new \Zend_Pdf_Style();
        $this->_setFontBold($style, 10);

        foreach ($invoices as $invoice) {
            if ($invoice->getStoreId()) {
                $this->_localeResolver->emulate($invoice->getStoreId());
                $this->_storeManager->setCurrentStore($invoice->getStoreId());
            }
            $page = $this->newPage();
            $order = $invoice->getOrder();
            /* Add image */
            $this->insertLogo($page, $invoice->getStore());
            /* Add address */
            $this->insertAddress($page, $invoice->getStore());
            /* Add head */
            $this->insertOrder(
                $page,
                $order,
                $this->_scopeConfig->isSetFlag(
                    self::XML_PATH_SALES_PDF_INVOICE_PUT_ORDER_ID,
                    \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
                    $order->getStoreId()
                )
            );
            /* Add document text and number */
            $this->insertDocumentNumber($page, __('Invoice # ') . $invoice->getIncrementId());
            /* Add table */
            $this->_drawHeader($page);
            /* Add body */
            foreach ($invoice->getAllItems() as $item) {
                if ($item->getOrderItem()->getParentItem()) {
                    continue;
                }
                /* Draw item */
                $this->_drawItem($item, $page, $order);
                $page = end($pdf->pages);
            }
            /* Add totals */
            $this->insertTotals($page, $invoice);
            if ($invoice->getStoreId()) {
                $this->_localeResolver->revert();
            }
        }
        $this->_drawFooter($page); // the custom text is added here
        $this->_afterGetPdf();
        return $pdf;
    }

    /**
     * Create new page and assign to PDF object
     *
     * @param  array $settings
     * @return \Zend_Pdf_Page
     */
    public function newPage(array $settings = [])
    {
        /* Add new table head */
        $page = $this->_getPdf()->newPage(\Zend_Pdf_Page::SIZE_A4);
        $this->_getPdf()->pages[] = $page;
        $this->y = 800;
        if (!empty($settings['table_header'])) {
            $this->_drawHeader($page);
        }
        return $page;
    }
    public function _drawFooter(\Zend_Pdf_Page $page)
        {
            $this->y =50;    
            //$page->setFillColor(new \Zend_Pdf_Color_RGB(1, 1, 1));
            $page->setFillColor(new \Zend_Pdf_Color_GrayScale(0));
            //$page->setLineWidth(0.5);
            //$page->drawRectangle(60, $this->y, 510, $this->y -30);

            $page->setFillColor(new \Zend_Pdf_Color_RGB(0.1, 0.1, 0.1));
            $page->setFont(\Zend_Pdf_Font::fontWithName(\Zend_Pdf_Font::FONT_HELVETICA), 11);
            //$this->y -=0;
            $page->drawText("OutdoorLivingUK Products Ltd, Unit C Oaklea House, Limesquare Estate, Peterborough PE3 8YQ", 70, $this->y, 'UTF-8');
            $this->y -=15;
            $page->drawText("Company Reg 07807363", 70, $this->y, 'UTF-8');
            //$page->drawText("Tel: +123 456 676", 230, $this->y, 'UTF-8');
            $page->drawText("VAT 169691651", 470, $this->y, 'UTF-8');
        }
}

It will display result like this: