Here’s more information on the three options I mentioned earlier:

*Chrome Extension: Dropbox for Chrome or Google Drive for Chrome*

- These extensions allow you to select files from Dropbox or Google Drive directly from the Chrome browser.
- They are easy to install and use.
- They are free.

Pros:

- Easy to use
- Free
- Direct integration with Dropbox or Google Drive

Cons:

- Only works on the Chrome browser
- May require additional permissions to access your files

*Filestack*

- Filestack is an online file management service that allows you to select files from different online storage services, such as Dropbox, Google Drive, or OneDrive.
- It offers an API for developers and a user interface for end users.
- It offers a free version with limitations, as well as paid plans for professional users.

Pros:

- Integration with many online storage services
- API for developers
- Free version available

Cons:

- May require technical knowledge to use the API
- Paid plans can be expensive for business users

*Uploadcare*

- Uploadcare is an online file management service that allows you to select files from different online storage services, such as Dropbox, Google Drive, or OneDrive.
- It offers an API for developers and a user interface for end users.
- It offers a free version with limitations, as well as paid plans for business users.

Pros:

- Integration with many online storage services
- API for developers
- Free version available

Cons:

- May require technical knowledge to use the API
- Paid plans can be expensive for business users

In summary, all three options have pros and cons. Chrome extensions are easy to use and free, but only work on the Chrome browser. Filestack and Uploadcare offer APIs for developers and user interfaces for end users, but may require technical knowledge to use the API.