Multi language with RTL
Attach PDF invoice to order email
Customer download invoice from their account
Integrates with Advanced Email Template Extension attach PDF to order confirm and update emails automatically.

	Opencart Version	Download
PDF Order Invoice Version: 3.1.0.11 Updated: 04/08/2019 Released: 07/10/2018	3.1.0.0
PDF Order Invoice Version: 3.0.3.8 Updated: 04/08/2019 Released: 24/07/2017	3.0.0.0 » 3.0.1.1 » 3.0.1.2 » 3.0.2.0 » 3.0.3.1 » 3.0.3.2
PDF Order Invoice Version: 2.3.0.8 Updated: 04/08/2019 Released: 06/02/2017	2.3.0.1 » 2.3.0.2
PDF Order Invoice - Fixed issue with order table missing backtick around reserved name. Version: 2.1.2 Updated: 03/06/2018 Released: 08/07/2015	2.2.0.0 » 2.2.0.1
PDF Order Invoice - Fixed issue with order table missing backtick around reserved name. Version: 2.0.1.1 Updated: 17/04/2019 Released: 16/05/2016	2.0.0.0 » 2.0.1.0 » 2.0.1.1 » 2.0.2.0 » 2.0.3.1 » 2.1.0.1 » 2.1.0.2
DejaVu Font Version: 1.0 Released: 20/05/2019	2.3.0.1 » 2.3.0.2 » 3.0.0.0 » 3.0.1.1 » 3.0.1.2 » 3.0.2.0 » 3.1.0.0 » 3.0.3.1 » 3.0.3.2

With this plugin, can I select the language of the invoice in admin or client area?

The language for pdf invoice is read from the `orders` table in the database, there's a column `language_id`.

I will add a way for admin user to download invoice in the language from admin into the next release of this extension.

I am looking for an invoice module on Open cart 3.0.3.2, as per below mentioned. When customer place order, Invoice is generated giving details about the customer and other order details. One invoice goes to the customer, one invoice I received in my mail/order box. What I want that when customers place order invoices must go to the customer, myself in my order box & to the supplier. Only thing, I want to hide from a supplier is the email ID of the customer on invoice forward to supplier, while the rest remains same. (for me and customer everything remains same as original order place including email id displayed) Also, want two email IDs field options each, in my order box and supplier order box. So invoices are automatically forwarded to two email IDs each, two in my separate email IDs, and two in supplier email IDs.

What you’re asking for sounds similar to an extension we built previously that could be customised further to suit your needs and integrated with our PDF invoice. It was originally written for Opencart 2.2 but will be straightf orward updating for Opencart 3.
https://www.opencart-templates.co.uk/email-manufacturers?route=product/product&language=en-gb