TCPDF Installation for True PDF Invoices
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The plugin will automatically use TCPDF when available for generating real PDF invoices with barcodes and QR codes.

Option 1 – Composer (recommended if you use Composer)
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In your WordPress root or plugin directory:
  composer require tecnickcom/tcpdf

Option 2 – Manual
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1. Download TCPDF from https://github.com/tecnickcom/TCPDF
2. Extract the contents into:
   wp-content/plugins/ja-courier-management/includes/tcpdf/
   so that the file tcpdf.php sits at:
   includes/tcpdf/tcpdf.php

3. The plugin will detect it automatically.

If TCPDF is not found, invoices fall back to a professional printable HTML version that users can save as PDF from the browser.
