Hello Thomas Guenard,

You can import xlsx or CSV files when selecting the option for
"When a value cannot be matched ==> Create new values."

if you select "create new values" to create a product in odoo when importing the file.

I hope this will help you.

Thanks & Regards,
Email: odoo@aktivsoftware.com
Skype: kalpeshmaheshwari

Another option could be to use an optical character recognition (OCR) tool to extract data from the PDF invoices and then use that data to create new products in Odoo. This will be faster than manual data entry and less prone to errors compared to importing data from a CSV or Excel file.

You can also look into third-party apps available in the Odoo App Store that can assist with this process.

It is important to thoroughly test any custom development or third-party apps before implementing them in your production environment to ensure they meet your business needs and do not cause any unintended consequences.