Hi @myavatarworld11, thanks for bringing this to our attention.
Do you want the option to upload files to be secure, in the sense that not everyone can access the link to do so?
Currently, there is the file request feature, which you can find out more information from here, however, this is a single link which anyone can click on to in order to upload files.
This will help me to assist further!
@myavatarworld11 wrote: I want users to be able to upload files to a specific Dropbox folder from my website....
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Hi @myavatarworld11,
To do that, you need some sort of API integration (with or without using helper SDK). In general there are 2 ways to do so:
Both ways have their pros and cons depending exact use case. Use what best matches your targets after get familiar with both.
@myavatarworld11 wrote: ...Problem: I’m unsure about the best way to set up this integration and ensure it’s secure.
I assume you will use your own account, not user accounts. To make sure everything is secure, perform all API calls (doesn't matter what way you select to upload) server side, NOT client side! If you select to use upload link, generate it server side and use client side only the link itself. If you select API upload calls, use your site as something like proxy. API calls require authentication, so if you perform client side calls, your credentials will be exposed - violating your own and your clients security. Just avoid exposing any credentials. That's it.
Hope this gives direction.