Custom Registration Field For Magento2- https://store.webkul.com/Magento2-Custom-Registration-Field.html
Custom Registration Field for Magento2 will allow the admin to create custom fields for customers. Using this module you can extend your customer sign up form. As Magento2 default custom registration form is not extendable, Custom registration field for Magento2 extension is the perfect choice for the store owners to extend custom fields for sign up form.
-Admin can easily extend the sign up form.
-Easy to use from Magento back-end and supported by all html input types.
-Admin can create any type of the input field and insert into the registration form.
-All kind of attribute supported.
-Easy to capture more customer information like Date Of Birth, Hobby etc.
-Custom Field validation for registration form.
-Support all input types including dropdown, dependable field, multi-select and image upload during sign up form.
-Admin can set validation type for all custom registration field. -For example valid number, use the number only, avoid spaces, use the valid date, etc.
-Visible on Sales Email.
-Visible on Sale’s order and invoice.
-The code is fully open & you can customize it according to your need.
-Fully dynamic module that means you don’t need any technical knowledge to extend sign-up form fields.
-Multi Lingual support / All language working including RTL
-Compatible with Multistore.